nereus.018.log

Asteroid 4660 Nereus

2002 January 18
Updated: 2008 March 19

=========================================================

Schedule and SNR Calculation

                                                    Duration  Rotation
Jan      UTC         PST     RA   Dec  AU    RunSNR    (h)      (&deg;)    
15    1730-2205   0930-1405  321  -1  0.036    100    4.58      109
18    1645-0005   0845-1605  308  -6  0.031    170    7.33      175
19    1630-2335   0830-1535  303  -8  0.030    190    7.08      169
20    1635-2300   0835-1500  298 -10  0.029    200    6.42      153
22    1530-2005   0730-1205  286 -13  0.029    210    4.58      109
23    1505-1950   0705-1150  280 -15  0.029    200    4.75      113
24    1445-1730   0645-0930  274 -16  0.030    190    2.75       66
25    1425-1855   0625-1055  268 -17  0.031    170    4.50      107
26    1405-1915   0605-1115  263 -18  0.032    150    5.17      123
27    1345-1910   0545-1110  258 -19  0.033    120    5.42      129
29    1315-1830   0515-1030  250 -20  0.037     88    5.25      125

=========================================================

UNCERTAINTIES
  With 282 optical observations spanning 30-SEP-1981 to 4-JAN-2002
5 delay and 2 Doppler, 4660 Nereus solution #30 was computed. 3-sigma
X-band uncertainties are shown below. Files have been updated
at Goldstone and Arecibo.

   Note TPM prediction error is one of the uncalibrated error 
sources not included in these uncertainty predictions. This is why 
Doppler error is sometimes replaced by "<1.000" Hz when it gets
very small. Here I left it.

      DATE          Pointing  X-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
 8-JAN-2002 00:00      1.331       0.178    0.000040
10-JAN-2002 00:00      1.157       0.130    0.000012
12-JAN-2002 00:00      1.084       0.124    0.000004
14-JAN-2002 00:00      1.227       0.133    0.000013
16-JAN-2002 00:00      1.385       0.157    0.000027
18-JAN-2002 00:00      1.540       0.194    0.000045
20-JAN-2002 00:00      1.654       0.240    0.000066
22-JAN-2002 00:00      1.691       0.283    0.000089
24-JAN-2002 00:00      1.647       0.315    0.000110
26-JAN-2002 00:00      1.536       0.330    0.000127
28-JAN-2002 00:00      1.408       0.328    0.000138

=========================================================

Pointing macro for January 18
                                                  TX Offsets    
Date (UTC)   DOY  hhmmss    RA      Dec   Macro  LHA      Dec    RTT  OSOD      
2002 01 18   018  160000 309.2024 -5.7529  A                     31.5  26
2002 01 18   018  170000 308.9876 -5.8265  A                     31.4
2002 01 18   018  180000 308.7683 -5.9000  A   0.0019  -0.0007   31.4
2002 01 18   018  190000 308.5455 -5.9734  A B                   31.3
2002 01 18   018  200000 308.3202 -6.0466  A B                   31.2
2002 01 18   018  210000 308.0935 -6.1195    B                   31.2
2002 01 18   018  220000 307.8667 -6.1920    B 0.0020  -0.0007   31.1
2002 01 18   018  230000 307.6408 -6.2643    B                   31.1
2002 01 19   019  000000 307.4170 -6.3363    B                   31.1
2002 01 19   019  010000 307.1961 -6.4082    B                   31.0

PRDX.OUT.s32
TRANSMITTER: STATION #14,     RECEIVER: STATION #14
RECEIVER    U.T.         RANGE         DOPPLER      LHA      DEC      RA      EL     
 2002 JAN 18 16:40     31.4309707631   142248.385 301.9604  -5.8018 309.060  21.748
 2002 JAN 18 16:50     31.4210252020   141525.625 304.5032  -5.8141 309.024  23.609
 2002 JAN 18 17:00     31.4111315562   140767.201 307.0462  -5.8264 308.988  25.439
 2002 JAN 18 17:10     31.4012922893   139974.225 309.5893  -5.8386 308.951  27.235 
 2002 JAN 18 17:20     31.3915097799   139147.880 312.1325  -5.8509 308.915  28.994 
 2002 JAN 18 17:30     31.3817863279   138289.412 314.6759  -5.8631 308.879  30.712 
 2002 JAN 18 17:40     31.3721241350   137400.131 317.2193  -5.8754 308.842  32.385 
 2002 JAN 18 17:50     31.3625253131   136481.410 319.7629  -5.8876 308.805  34.008 
 2002 JAN 18 18:00     31.3529918803   135534.678 322.3065  -5.8999 308.768  35.577 
 2002 JAN 18 18:10     31.3435257438   134561.421 324.8503  -5.9121 308.731  37.087 
 2002 JAN 18 18:20     31.3341287136   133563.176 327.3941  -5.9244 308.694  38.532 
 2002 JAN 18 18:30     31.3248024816   132541.530 329.9381  -5.9366 308.657  39.905 
 2002 JAN 18 18:40     31.3155486331   131498.116 332.4821  -5.9488 308.620  41.202 
 2002 JAN 18 18:50     31.3063686352   130434.611 335.0262  -5.9611 308.583  42.414 
 2002 JAN 18 19:00     31.2972638364   129352.731 337.5704  -5.9733 308.546  43.536 
 2002 JAN 18 19:10     31.2882354632   128254.227 340.1146  -5.9855 308.508  44.560 
 2002 JAN 18 19:20     31.2792846186   127140.886 342.6589  -5.9977 308.471  45.480 
 2002 JAN 18 19:30     31.2704122791   126014.522 345.2033  -6.0099 308.433  46.288 
 2002 JAN 18 19:40     31.2616192910   124876.974 347.7477  -6.0221 308.396  46.979 
 2002 JAN 18 19:50     31.2529063773   123730.106 350.2922  -6.0343 308.358  47.545 
 2002 JAN 18 20:00     31.2442741233   122575.797 352.8367  -6.0464 308.320  47.983 
 2002 JAN 18 20:10     31.2357229843   121415.942 355.3813  -6.0586 308.283  48.288 
 2002 JAN 18 20:20     31.2272532823   120252.447 357.9259  -6.0708 308.245  48.457 
 2002 JAN 18 20:30     31.2188652053   119087.225   0.4705  -6.0829 308.207  48.489 
 2002 JAN 18 20:40     31.2105588053   117922.192   3.0152  -6.0951 308.169  48.382 
 2002 JAN 18 20:50     31.2023340058   116759.263   5.5598  -6.1072 308.131  48.139 
 2002 JAN 18 21:00     31.1941905906   115600.348   8.1045  -6.1193 308.094  47.760 
 2002 JAN 18 21:10     31.1861282113   114447.351  10.6492  -6.1314 308.056  47.251 
 2002 JAN 18 21:20     31.1781463870   113302.161  13.1938  -6.1435 308.018  46.616 
 2002 JAN 18 21:30     31.1702445046   112166.654  15.7385  -6.1556 307.980  45.860 
 2002 JAN 18 21:40     31.1624218203   111042.683  18.2832  -6.1677 307.942  44.989 
 2002 JAN 18 21:50     31.1546774612   109932.081  20.8278  -6.1798 307.905  44.011 
 2002 JAN 18 22:00     31.1470104247   108836.652  23.3724  -6.1919 307.867  42.931 
 2002 JAN 18 22:10     31.1394195890   107758.171  25.9170  -6.2040 307.829  41.757 
 2002 JAN 18 22:20     31.1319037030   106698.378  28.4616  -6.2160 307.791  40.497 
 2002 JAN 18 22:30     31.1244613951   105658.975  31.0061  -6.2281 307.754  39.155 
 2002 JAN 18 22:40     31.1170911813   104641.625  33.5505  -6.2401 307.716  37.740 
 2002 JAN 18 22:50     31.1097914553   103647.943  36.0950  -6.2521 307.678  36.257 
 2002 JAN 18 23:00     31.1025605064   102679.502  38.6393  -6.2642 307.641  34.711 
 2002 JAN 18 23:10     31.0953965082   101737.820  41.1836  -6.2762 307.603  33.109 
 2002 JAN 18 23:20     31.0882975355   100824.364  43.7279  -6.2882 307.566  31.454 
 2002 JAN 18 23:30     31.0812615579    99940.542  46.2721  -6.3002 307.529  29.752 
 2002 JAN 18 23:40     31.0742864546    99087.706  48.8162  -6.3122 307.491  28.007 
 2002 JAN 18 23:50     31.0673700044    98267.145  51.3602  -6.3242 307.454  26.223 
 2002 JAN 19 00:00     31.0605099036    97480.082  53.9042  -6.3362 307.417  24.404 
 2002 JAN 19 00:10     31.0537037615    96727.675  56.4481  -6.3482 307.380  22.552

=========================================================

BEGIN ELECTRONIC LOG

Benner, Ostro, & Giorgini at JPL
Jurgens, Rose, Kern, Smith, Jao, Frye, Choate, Franck at Goldstone

Start with solution 32

We'll start with cw, transmitting 10 runs with RCP and then 10 runs with LCP,
go to 1 us to update the range, and then to 1/8 us x 1/4 Hz imaging.

Internet connections are not guaranteed because they were planning to replace
routers yesterday.  


TX Power =  xxx kW 

 TX  polarization             RCP
 RCV polarization             1=RCP=SC=  K at zenith   K on point at 1739 UTC
                              2=LCP=OC=  K at zenith   K on point



Boresight source:   (elevation =  degrees)
Corrections:
AX =    mdeg
EL =    mdeg


Starting CW setup:
TX polarization           RCP
RCV polarization          LCP
Frequencies:              2
Dwell:                    10 seconds (RTT is only 31 seconds; 15 sec dwells might not work)
Bandwidth:                2000 Hz
Sampling interval:        5000 x 0.1 usec  
VME FFT for PSD files:    4096 for 0.48828-Hz resolution


1730: I called out twice from home prior to the track.  At 1645 they had
just finished the boresight and were going to the source.  I calle again at
1720 and they were on tx LCP run #9.  They did several runs with dwell = 15
sec before Randy realized they had the wrong dwell, so they switched it
to 10 s (as I instructed).  

Randy said that the echo is centered at about -1 Hz, although that could be
due to asymmetry in the shape.  We're going to get it with 1.0 us after
we finish 10 cw runs transmitting LCP.  Then we'll go to 1/8 us x 1/4 Hz
imaging for the rest of the track.  

Randy mentioned earlier that Compaq hadn't called back and that nobody came
to service the VAX.  

1750: They completed the 20 cw cycles.  They forgot to change file names so
they're all in the same file.

1.0 us x 3.0 Hz setup
---------------------
(code=127, FFT=64, single-pol'n) 
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
txoff = +30 Hz (= +10 Doppler bins or bin 32+10=42)
loopback should be in gate 13.


They did the 1.0 us loopback and were working on the cold sky when they
had the cpu problems with the vax again.  Originally they were getting the same
error message we got on Tuesday, so Carl started to run the diagnostics, which
cleared the problem last time.  Now a new error has popped up.  They called 
Compaq and those guys are on standby ready to drive out (from San Bernardino,
I think) today if necessary.  

Of even greater concern is that Joel, who is just coming up to speed, is leaving
to take a job back in Barstow and Al, who is very good, is about to do a second
interview for a better-paying job in Pasadena.  That would leave Randy as the
sole operator again, and he's not happy about it.  He's thinking about leaving
too.  Yikes!  

If running the vax diagnostics doesn't work, then we can take data with the PFS.

The track is NOT off to a good start.

1810: Ray called. vme & vax phases differ--about 10-13 us different, so absolute 
ranges are problematic with vme.  Fine, we won't try any ranging with the VME,
but while they're working on the vax we're going to image with the VME/PFS
and forget about 1.0 us for now.

1857: taking imaging data w/PFS.  Ray and Joseph are working with a script Jean-Luc
provided to look at the PFS images to verify that the data are good.  Not clear 
yet if they have the script working.

Meanwhile, the vax diagnostics identified the module giving us trouble so the
Compaq people are going to come out.  This is the new problem, not the cpu problem
that we had on DOY 15.  The vax is coming back up and Carl is
getting it ready, so we're hopeful that we can start imaging with it within an
hour.  

1920: Ray called.  PFS datataking is going well but haven't been able to get the
script to run to see images.  Tried calling Jean-Luc; haven't reached him yet.
vax is back up so they're stopping with the PFS and switching to the vax.
We're going to do 1.0 us x 3.0 Hz ranging and then 1/8 us imaging.


1/8 us x 1/4 Hz
---------------
(code=127, FFT=128, single-pol'n) 
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
JX1XS001   0.125   18.75   15.875  62992.1 246.1   1970    32     0.2498 
txoff = +8 Hz
CLT = gate 34

****************************************************************************************
2008 March 19: It turns out that we usec 1968 coherent sums, so the frequency resolution
               was 0.250064 Hz, not 0.2498 as stated above
               We are using records 8 seconds long, so each has two FFTs.  We're getting 
               about 30 seconds per cycle, so after the VAX tossed the first record, we
               got 2-3 records (some records are incomplete--we got parts of them at
               the end of runs).
****************************************************************************************


1955: Randy called.  vax is up.  1.0 us echo came in 1-2 gates late.  Fax that 
Randy sent shows a correction of +2 us.  (clt = 13, te = 15).  They also sent
a fax of the 1/8 us display--echo LE is in gate 39, com is at about 45, so 
the echo is about 45-33 = 12 gates late.  I'll update the orbit and generate a new
solution for use tomorrow.

Epoch = 20:00:00
Correction = +12 gates = (12 gates/8 gates/us) = +1.5 us +/- 0.5 us

PRDX.OUT.s32
TRANSMITTER: STATION #14,     RECEIVER: STATION #14
RECEIVER    U.T.         RANGE         DOPPLER      
 2002 JAN 18 20:00     31.2442741233   122575.797
                       +0.0000015 +/- 0.5 us
                       ------------
                       31.2442756 +/- 0.5 us

 DELAY (weight in 10^-6 sec):
  1937 12 02 19:50:00    R 42.590780605 10.000 8560.D6  -14      Reber,G.
  yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer...

  2002 01 18 20:00:00    R 31.2442756    0.5   8560.D6  -14      Benner, L.A.M.
  Correction of +1.5 us to solution 32 from 1/8 us imaging.  Place COM at
  center of TE in gate 45 (loop back is in gate 33).  


2045: called out and spoke with Al and Ray.  vax Imaging is going smoothly.  Ray is
trying to figure out why the vme and vax ranges differ, Joseph is working on
Jean-Luc's PFS script.  They haven't been able to reach Jean-Luc today and they
don't know if the PFS imaging worked.  

Ray and I discussed going to even higher resolution.  We have the SNR.  We're
going to use the same setup tomorrow but using a 256 FFT instead of 128.  
The bandwidth will be the same: 32 Hz.  Each look will be 8 seconds long so we'll
get four looks/run, but the vax tosses the first, so we'll get 3 looks/run and
0.125 Hz resolution.  

Leading edge is still in gate 39, same as it was at 19:57.

2058: vax stopped four minutes ago due to the ^C problem (about 50 runs).
They're doing a boresight and then will resume.  They hadn't cleared the display
while imaging before so we don't know if the image smeared or not.  

2100: called to ask them to transfer the imaging data to intruder, but nobody
picked up the phone!  Perhaps they're all out taking a potty break or smoking...?

2124: Spoke with Joel: they didn't do a boresight--couldn't find any stars close
enough, so they're imaging again.  

2137: fax shows that LE is in gate 43, so the echo has moved back by 4 range gates
since we started imaging.  Earlier Randy and Ray mentioned that the echo was 
centered at -1 Hz, so if that was ephemeris error (instead of an asymmetric shape),
the echo should drift by about 0.4 us/h or about 3 gates/h, which is about right.
I'm going to estimate the range again near the end of the track in order to
nail the Doppler.  

221803 vax quit on run 54.  They're restarting.  VAX is working OK so far.

When I spoke with Ray earlier he mentioned that Compaq may not renew the service
contract past February.  In part that's because they're VAX expert may leave the
company and they don't have anyone else who knows vaxes well enough.  

2322: spoke with Joel.  Going well. 

0008: game over for this track.  Ray emailed me about the PFS: they never saw clear
echoes in the PFS data and Jean-Luc wasn't available to help them look at the data.
Evidently he's out of town.  

Need to get a new range and update the ephemeris.  

- - - - - - - - - - - - - - - - - - - - 

0147: I did a quick reduction of the imaging data: it's OK.  

I grouped the first 20 minutes (centered on 20:00:00) and the last 10 minutes
(centered on 00:00:00 Jan. 19) to estimate range corrections.

I now estimate that the COM is in gate 46, not gate 45.  That's close enough 
that I'm going to stay with the earlier estimate.

At 00:00:00 I estimate that the COM is in gate 55, so the correction is 
55-33 = 22 gates or 22/8 us = +2.75 us +/- 0.5 us.

PRDX.OUT.s32
TRANSMITTER: STATION #14,     RECEIVER: STATION #14
RECEIVER    U.T.         RANGE         DOPPLER      
 2002 JAN 19 00:00     31.0605099036    97480.082
                       +0.00000275 +/- 0.5 us
                       --------------------
                       31.06051265 +/- 0.5 us

 DELAY (weight in 10^-6 sec):
  1937 12 02 19:50:00    R 42.590780605 10.000 8560.D6  -14      Reber,G.
  yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer...

  2002 01 19 00:00:00    R 31.06051265   0.5   8560.D6  -14      Benner, L. A. M.
  Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging.  Placed
  COM near center of the trailing edge.  

enter into osod:
 
OSOD  --  JPL On-Site Orbit Determination
          v p1.3   ("?" for command list)

          Object name: Asteroid 4660 Nereus

osod > add rad

Example DELAY or DOPPLER input (time is U.T.C.) --
 DELAY (weight in 10^-6 sec):
  1937 12 02 19:50:00    R 42.590780605 10.000 8560.D6  -14      Reber,G.
  yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer...

 DOPPLER (weight in Hertz)  :
  1937 11 27 22:20:00    P -540576.10D0 1.0000 8560.D6  -14  -13 Reber,G.
  yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer...

: 2002 01 18 20:00:00    R 31.2442756    0.5   8560.D6  -14      Benner, L.A.M.

Enter up to two 78-character comment lines one record) --
: Correction of +1.5 us to solution 32 from 1/8 us imaging.  Place COM at
: center of TE in gate 45 (loop back is in gate 33).  

Observation being processed:
  2002  1 18 20:00:00
ADDFILE report:   1 record added  

osod > add rad

Example DELAY or DOPPLER input (time is U.T.C.) --
 DELAY (weight in 10^-6 sec):
  1937 12 02 19:50:00    R 42.590780605 10.000 8560.D6  -14      Reber,G.
  yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer...

 DOPPLER (weight in Hertz)  :
  1937 11 27 22:20:00    P -540576.10D0 1.0000 8560.D6  -14  -13 Reber,G.
  yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer...

: 2002 01 19 00:00:00    R 31.06051265   0.5   8560.D6  -14      Benner, L. A. M.

Enter up to two 78-character comment lines one record) --
: Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging.  Placed
: COM near center of the trailing edge.  

Observation being processed:
  2002  1 19 00:00:00
ADDFILE report:   1 record added  

osod > cmod 32
 
 USERFILE  contained  323 observation(s)
 ADDFILE   contained   10 observation(s)
 MERGEFILE contains   333 observation(s)
 

CMOD varlist over-ride
  ISOLN    = 32

Pass 1 integration step:
 2444984.175  1982 Jan 14.675  -0.35429

Pass 2 integration step:
 2444979.811  1982 Jan 10.311  -0.58820

^L                 Observations, Residuals and Residual Differences  -  Pass 2
                      Observation        Obs         J2000 Residuals           Sigmas    Res. Differences
     Date(UTC)       R.A.      Dec.      Code  R.A.cosD     Dec.      RSS     R.A. Dec  Predicted-2nd Pass
AR2002 119.000000  00000   31.06051265   -14          Delay         -0.003    0.500        0.000
AR2002 118.833333 200000    31.2442756   -14          Delay          0.063    0.500        0.000
AR2002 115.770833 183000     36.122088   -14          Delay         -0.596    1.000        0.000
AR2002 111.775000 183600   44.91829868    -1          Delay          0.602    1.500        0.000
AP2002 111.770833 183000      68417.78    -1          Doppler       -0.045    0.200        0.000
AR2002 110.818750 193900    47.2799725    -1          Delay          0.352    1.500        0.000
AR2002 1 9.781944 184600     49.916029    -1          Delay         -0.031    4.000        0.000
AC2002 1 4.761740 225833.50 +063027.5    113    -0.379     0.136     0.402    1.0  1.0     0.000     0.000
AC2002 1 4.760570 225833.88 +063028.4    113     0.329    -0.367     0.493    1.0  1.0    -0.001     0.000
AC2002 1 4.759390 225834.21 +063030.1    113     0.246    -0.082     0.260    1.0  1.0    -0.001     0.000
AC2002 1 4.758210 225834.53 +063031.7    113     0.011     0.104     0.104    1.0  1.0    -0.001     0.000
AC2002 1 4.757030 225834.89 +063033.2    113     0.370     0.190     0.416    1.0  1.0    -0.001     0.000
AC2002 1 2.727620 230630.90 +070508.6    151     0.379     0.062     0.384    1.0  1.0     0.000     0.000
AC2002 1 2.725430 230631.43 +070510.6    151     0.309     0.034     0.311    1.0  1.0    -0.001     0.000
AC2002 1 2.723080 230631.98 +070512.7    151    -0.051    -0.040     0.065    1.0  1.0    -0.001     0.000
AC2002 1 2.720080 230632.72 +070515.8    151     0.045     0.288     0.291    1.0  1.0    -0.001     0.000
AC20011230.730080 231542.10 +074247.7    118    -0.566    -0.444     0.719    1.0  1.0     0.000     0.000
AC20011230.713770 231545.16 +074258.4    118    -0.705    -0.499     0.863    1.0  1.0     0.000     0.000
AC20011230.712530 231545.40 +074259.5    118    -0.617    -0.212     0.653    1.0  1.0     0.000     0.000
AC20011225.103730 232740.18 +082752.3    691    -0.137    -0.209     0.250    1.0  1.0     0.000     0.000
AC20011225.088500 232742.21 +082758.2    691    -0.175    -0.288     0.337    1.0  1.0     0.000     0.000
AC20011225.073990 232744.16 +082803.7    691    -0.207    -0.384     0.436    1.0  1.0     0.000     0.000
AR20011220.953472 225300   103.2425114    -1          Delay         -1.286    4.000        0.000
AR20011218.903472 214100    108.380755    -1          Delay          1.358   10.000        0.000
AP20011218.903472 214100       69201.3    -1          Doppler       -0.111    0.200        0.000

Radar residuals look very good. 


========= Close Approach Summary (b-plane)
   Time (TDB)     Date (TDB)      Body   CA Dist  MinDist  MaxDist   Vrel  TCA3Sg   SMaA    SMiA   Theta  Nsigs  P_i/p
 2444993.34503 1982 Jan 23.84503  Earth  .027711  .027711  .027712   5.408   0.54 6.18283 3.01728 -45.73 4.74E5 .000000
 2450187.57936 1996 Apr 14.07936  Mars   .075456  .075456  .075456  11.550   0.05 16.0964 8.66209 -24.03 7.63E5 .000000
 2452297.01582 2002 Jan 22.51582  Earth  .029024  .029024  .029024   5.419   0.01 3.87835 .121878  88.46 1.55E7 .000000

iter 32
iter 33
eph 34
pred
x


---------------------------------------------------------------------------

 DELAY (weight in 10^-6 sec):
  1937 12 02 19:50:00    R 42.590780605 10.000 8560.D6  -14      Reber,G.
  yyyy mm dd HH:MM:SS type obsrvbl(sec) weight frq(Hz) xstn rstn observer...


 DOPPLER (weight in Hertz)  :
  1937 11 27 22:20:00    P -540576.10D0 1.0000 8560.D6  -14  -13 Reber,G.
  yyyy mm dd HH:MM:SS type obsrvabl(Hz) weight frq(Hz) xstn rstn observer...

===================================================================================================

MASTERLOG
===================================================================================================
                                              RCV      
file         setup                   runs start -stop   osod OFFSET TX Poln    
---------------------------------------------------------------------------------------------------
PSD02018.4660_Nereus, VOLT02018.4660_Nereus
         CW 2 kHz 4096 FFT            10  165836-170845  32   none   RCP  same file,15 s dwell
         CW 2 kHz 4096 FFT            10  171301-172310  32   none   RCP  same file,10 s dwell
         CW 2 kHz 4096 FFT            10  172831-173841  32   none   LCP  same file,10 s dwell
PFS        1/8 us           127 code  49  183025-192217  32    +8    RCP
ne01803      1 us x 3.0  Hz 127 code   4  193006-193357  32   +30    RCP      
ne01806    1/8 us x 1/4 Hz  127 code  58  194953-205440  32    +8    RCP      
ne01807    1/8 us x 1/4 Hz  127 code  54  211746-221803  32    +8    RCP    
ne01808    1/8 us x 1/4 Hz  127 code  54  222329-232336  32    +8    RCP    
ne01809    1/8 us x 1/4 Hz  127 code  35  232444-000519  32    +8    RCP    

===================================================================================================

ASTROMETRY
==========

  2002 01 18 20:00:00    R 31.2442756    0.5   8560.D6  -14      Benner, L.A.M.
  Correction of +1.5 us to solution 32 from 1/8 us imaging.  Place COM at
  center of TE in gate 45 (loop back is in gate 33).  

  2002 01 19 00:00:00    R 31.06051265   0.5   8560.D6  -14      Benner, L. A. M.
  Correction of +2.75 us to solution 32 from 1/8 us x 1/4 Hz imaging.  Placed
  COM near center of the trailing edge.  

===================================================================================================

PROBLEMS
========
1. Forgot to change vme files when we switched from transmitting RCP
   to LCP.  Not a big deal.
2. Gain on channel one is unstable--it's a problem upstairs, now made clear
   because they fixed the relay switch (so new problems are now evident)
3. vax cpu error and a new error in a module.  running the vax diagnostics
   is bypassing the problems but not solving them.


Things to do after the track
============================
1. ftp cw data from the VME -> intruder            	==> done
2. scp cw data from intruder -> JPL                     ==> done
3. ftp ranging data from the VAX -> intruder            ==> done
4. convert vax *.dat files to rdf files			==> done
5  scp rdf ranging data from intruder -> JPL 	        ==> done
6. ftp tx/rcv logs to intruder                          ==> done
7. scp tx/rcv logs from intruder to JPL	                ==> done
8. write protect all data files	at JPL   		==> done
9. write protect tx/rcv, ops, & cal log files at JPL    ==> done
10.update planning page w/astrometry        		==> 
11.draft a log file for the next track			==> 
12.critique 						==> not out there
13.get the data package				        ==> later
14.back up the data -> exabyte tape & write protect it	==> 
15.organize hardcopies in the notebook 			==> 
16.scp observational log -> JPL and write protect it	==> already at JPL
17.e-mail brief summary of results -> co-authors        ==> 
18.e-mail brief summary -> Ralph & Larry                ==> 
19.do a preliminary reduction of the cw data            ==> 
20.reduce the imaging data                              ==> done
21.scp new orbital solutions from intruder -> JPL       ==> done
22.Contact optical observers (Pravec, Hicks, Buie...)	==> 
23.draft an imaging script for the next track		==> 
24.update the masterlog                                 ==>