Dear occultation observer,

IOTA/EA starts collection Asteroids and Lunar occultation report

We IOTA/EA ready to begin report collection business on Dec.15 2023.
The reports from East Asia region will be sent to the central office of IOTA.
These data, from all over the world, are archived at the VizieR Astronomical Data Center. And the data
will be used for various purposes, such as understanding the shape of asteroids and improving their orbits.
Lunar data will be used to verify the topography of the lunar limb and the positions of stars, and data on
double stars will be reflected on the Washington Double star Catalog.
Send your report directly to
Asteroid occultation : asteroid-report@iota-ea.org
Lunar occultation (include grazing occultation ) : lunar-report@iota-ea.org
In addition to above, we recommend introducing your observation to regional community with SNS, Maillist and others.
Please feel free to ask me if you have any questions.
mail to [ Asteroids: asteroid-report@iota-ea.org ][ Lunar: lunar-report@iota-ea.org ]Dec. 12, 2023
Asteroids / Lunar department
International Occultation Timing Association / East AsiaThe detail of how to report submission is below.
HowToReport[Asteroids]
ExampleOfAsteroidReport
TextFormatForAsteroid
XMLReportFormat
TextBasedLightcurve
ImageGraphOfLightcurve[Lunar]LunarTextReport
ImageGraphOfLunarLightcurveHow to report your observations of Asteroids and Moon occultation
1. Reporting addresses
a. Asteroid occultation : asteroid-report@iota-ea.org
b. Lunar occultation (include grazing occultation ) : lunar-report@iota-ea.org
Submit report only via e-mail to above address.
In addition to above, we recommend introducing your observation to regional community with SNS,
Mail list and others.
2. report contents(1) Report in text format [Required]
Asteroids: IOTA/EA standard text report format (Body of email messages)
Lunar:IOTA Lunar occultation report format (Body of email messages)(2) Report in OCCULT4 format [Optional]
Asteroids: XML (for report) format (Body of email messages
Lunar:(or attachment) )[Not required](3) Camera setting information [Required]
Asteroids: for CMOS camera : Camera setting filefor other camera : Write to detailed description.
Lunar: Only length of frame exposure should be written to comment line of text report.
(4) Detailed description of the observation (Body of email messages) [Optional]
About weather conditions or setting of telescope and others.
(5) Light curve* Since IOTA Central Office has requested the submission of the data, we ask you to submit the data
as much as possible.
Asteroids: [Required in the case of(1) Light drop is observed(2) Near miss with asteroid’s shadow is expected although there is no drop(3) Case of very small object (several km or smaller) although there is no drop ]a. Text-type light curve data => Paste it in the body of the email (or as an attached file)b. Graph image files => As an attached file
Moon: [Required only for characteristic cases such as double stars or slow light change]
a. Text-type light curve data => As an attached file.
b. Graph image file => As an attached file.
(6) Other data or materials as deemed necessary.

[Optional](7) Some records for confirm correct time [When requested by the report collection staff.]* Some models of GPS sensor show the time a few seconds ahead of UTC, until they read the leap
second information (which takes about 12.5 minutes after startup).
Due to turning on the GPS sensor is too late or poor wave receptance, it happens that GPS output
incorrect time. For obtaining correct time from these cases, we strongly recommend taking
photograph (or record video) of PC monitor which displays both of GPS (or NTP) software and video
capture software. Also, record every second time log from GPS during the video observation period.

a. Time log
b. Picture (or screen shot) of PC LCD monitor
3. reporting process
1st Step: Please report via e-mail to the reception address within ~2 weeks from your observation.
2nd STEP: You will receive an e-mail from the receptionist within a couple of days.
The person in charge may ask you some questions or some confirmation items. In such cases,
please respond as soon as possible.
Final Step: You will receive a confirmation email from the person in charge stating that your report has
been fully accepted. Receipt of this email confirms that your observation report is complete.

Example of Asteroid observation report
1. Text format
Dear director of asteroid department.
I’d observed the (599) Luisa's occultation of UCAC4 642-041533 and confirmed positive.
Altitude of star was high and there was little effect from atmospheric turbulence, so I used rather shortframe exposure time as 41.8 msec. The duration of light drop is longer than predicted.
************** Asteroid occultation Report **************[Date] 2023.11.15 [Approx hour] 17.6
[Star] UCAC4 642-041533[Asteroid ] (599)Luisa[Observer ] 1: Kazuhisa Miyashita 2:[Location ] Azumino, Nagano, JPN[Longitude ] 137o53'47.8" E[Latitude ]36o21'59.9" N[Altitude ] 541m
[Datum] WGS84[Event time] D: 17h36m16.125s +/- 0.030s (UTC) S/N=2.60
R: 17h36m23.939s +/- 0.021s (UTC) S/N=3.00[Recorded ] From 17h35m18s
To17h38m33s[Mag. drop ] D: Measured: 0.43 ; Predicted: 0.5
R: Measured: 0.48 ; Predicted: 0.5[Telescope ] Aperture: 28cm
Type: SCT
F=1.95[Camera] Analog or Digital video , Model= ASI462MM[Exposure ] Set: 41.8msec, Measure: 41.8msec[Setting] Area: 1024x512 ; Binning=2
Gain: 496 ; Brightness: 168 ; High Speed Mode: Off[Time keep ] GPS ; Model: GT902PMGG[Evidence ] GPS Time Log : Recorded ; Screen shot: Recorded[Condition ] Stability: Steady Transparency: Clear[Remarks]
Since atmosphere stability is good though this event has small
magnitude drop, I’d selected slight short frame exposure.
[Additional comment]

2. XML report format<Observations><Event><Date>2023|11|15|17.6</Date><Details><Star>UCAC4|642041533|0||0.0000000000|0.000000000|0.00|0.00|0.00|0|0.00000000|0.0000000|25.00|25.00|25.00|0</Star><Asteroid>599|Luisa|0.00000000|0.00000000|0.0000000|0.0000000|0.0000000|0.0000000|1.00000|0.
00000|0.0|1.0|20.00</Asteroid></Details><Observations><Observer><ID>1|Kazuhisa Miyashita||0|Azumino, Nagano|JPN|+137 53 47.8|+36 21 59.9|541||28|3|a|a</ID><Conditions>1|1|2.80||</Conditions><D>17 36 16.125|D|0.030||| </D>
<R>17 36 23.939|R|0.021||| </R></Observer></Observations><LastEdited>2023|7|17</LastEdited></Event></Observations>
3. Text-based Light curve
Date: 2023-11-15 17:36:5.61: 28.39: 680
Star: 0: 0: 0: 0: 0-0-0: 642-041533
Observer: +137:53:47.8: +36:21:59.9: 541: Kazuhisa Miyashita
Object: Asteroid: 599: Luisa
Values:1230:906:1014:862:906:996:1188:943:1206:1164:1062:1370:846:1056:1125:1008:921:1058:964:1162:940:963:110
8:896:900:1045:986:1181:978:883:966:1108:839:1053:783:930:849:1190:1068:892:952:1124:828:1039:974:1186:1172:10
30:1068:1091:889:1233:1022:1078:857:1064:916:794:1150:1100:857:1371:948:1046:752:1089:1072:903:1001:1152:975:9
24:976:872:896:1171:959:992:1107:874:967:822:900:841:1205:790:926:1092:819:1164:922:1049:827:1116:1010:1043:93
0:1135:1086:1014:1026:1058:833:981:1124:948:1161:986:1127:1063:762:780:876:1050:1007:868:790:1166:1263:1102:11
18:960:880:920:1131:967:1027:1004:862:1010:948:1009:899:1020:952:1077:896:1051:1032:832:736:786:796:1128:904:7
74:823:1073:1013:867:904:1058:990:1076:899:941:1214:1069:1058:1174:953:1004:937:1150:818:933:824:1193:920:902:
793:1127:970:921:1186:1128:1231:1203:996:983:914:792:1062:1020:924:1144:1184:736:1121:852:1092:1163:762:924:95
2:1022:1245:1043:1054:756:988:862:1119:1242:1136:1124:992:795:996:908:985:846:752:850:929:1080:1169:946:980:86
2:828:1023:1087:981:944:975:951:887:968:907:1005:1026:955:955:1007:1122:958:798:1000:989:1011:1058:1019:900:11
14:1206:1028:967:1122:917:904:912:576:724:676:524:680:679:814:819:507:671:531:485:701:921:552:584:704:697:660:727:560:587:642:784:675:647:559:670:864:672:662:602:729:572:583:450:769:678:758:844:739:648:655:720:528:516:708:
852:748:652:815:684:825:579:635:764:605:472:689:662:567:706:655:614:682:652:762:535:746:701:615:615:558:529:579:602:609:782:712:683:769:654:520:569:616:586:559:679:671:610:485:642:673:648:824:762:676:628:673:696:741:631:62
9:576:585:694:690:871:551:603:768:616:642:587:640:591:495:545:798:662:848:754:601:730:915:702:700:668:786:644:6
58:656:529:790:652:683:786:784:1003:694:567:584:738:656:762:600:515:629:555:634:689:696:582:723:701:683:570:737:723:643:784:732:706:649:636:617:582:610:722:624:540:592:675:598:621:604:618:688:821:617:628:643:743:669:640:64
0:645:1020:1050:849:1007:982:1140:939:751:1122:944:965:1187:1057:1261:1141:948:948:974:793:858:946:1205:986:10
60:909:944:1280:1133:923:976:836:1141:880:927:1054:1166:918:795:1069:831:1060:978:955:718:1202:1255:793:1076:8
74:1308:968:1008:972:1050:1151:1084:993:1336:1051:994:1054:920:1174:1095:1061:1050:1007:900:868:1045:1214:113
4:1006:899:849:922:1022:964:1096:984:934:1107:1004:1213:914:959:1113:964:993:917:957:1058:934:1004:1032:972:10
43:1040:990:1188:929:1001:1012:1056:1104:882:1118:974:876:1219:1104:999:974:1350:990:1211:1205:1039:1171:1203:
1044:1262:1004:1145:1074:938:1116:953:1002:950:1082:1080:1030:1053:954:988:866:1084:984:838:1144:1052:1119:10
58:1025:982:1054:1145:988:1244:856:1076:973:860:1116:1025:891:1063:1029:942:912:903:1173:998:1143:1076:1148:10
33:979:1309:1264:773:1092:923:1184:1046:959:986:779:714:1005:948:978:1125:1198:1066:1064:1025:843:894:1068:994:968:1211:877:873:1040:1248:940:916:972:1064:1101:1144:1048:1181:1046:1049:1121:1059:839:889:1045:982:998:906:
906:912:998:845:1079:964:1135:1162:995:852:974:916:1146:1194:942:837:925:1016:1078:1007:803:1157:888:1069:1061

4. Graph image of light curve2023.11.15 17.6hr (UT)

(Recommend to Make PDF file and attach it to Email or post it to your web site.)(599)Luisa occults UCAC4 642-041533(14.1Mag)

Location: Akashina-Nanaki, Azumino, Nagano, Japan
Telescope: 28cm aperture shmidt cassagrain; Camera: ZWO ASI462MM; GPS: GT902PMGG

Example of Lunar observation report
1. Text format (body of messages)
Dear correction officer
Here is Lunar occultation report in Mar. 2023.
I’ve began to use CMOS camera for Lunar occultations.
-------------------------------------------------------------------Place name
Azumino, Nagano, Japan
Email address k_miyash@nifty.com
Representative Kazuhisa Miyashita
TANED

30

120OAK. Miyashita+1375347.8+362159.984541.7M

k_miyash@nifty.com

20230329111702.453S 78848 DD
EG G0.00315.8
T236AA20230329113840.390X 95083 DD
EG G0.10810.9
T236
AA20230329114902.234X 95192 DD
EG G0.00314.8
T235
AAThin cloud which was brighten by moon light.
20230329122046.138R 1056 DD
EG G0.00216.5
T232
AA
Thin cloud which was brighten by moon light.
20230329145411.502R 1067 DD
EG G0.00821.3F
T232
AA
26% light drop
20230329145411.592R 1067 DD
EG G0.00314.0B
T232
AAFainter: 8.67 +/- 0.33 mag., Brighter: 7.39 +/- 0.08mag.
20230330104618.244S 79685 DD
EG G0.00216.5
T222AA20230330124519.500S 79727 DD
EG G0.00219.3 0.042T221
AAIts non instantaneous light drop is considered that causedby large 76.3 deg. contact angle
20230330131915.830X105335 DD
EG G0.00219.4
T222AA
20230330133704.714X105397 DD
EG G0.01212.9
T224
AA20230331115008.818S 80341 DD
EG G0.00315.6
T222
AA20230331115331.738X110985 DD
EG G0.05711.2
T224AA20230331125459.354X111116 DD
EG G0.00713.2
T222
AA20230331135023.245S 80370 DD
EG G0.00216.0
T222
AA*** Observation details ***Telescope : D=300mm, F4.0 Newtonian
Camera : ASI290MM
Binning = 2
High Speed Mode = OnStar

Mag(R)

Exposure

Gain

Brightness

Capture Area

Mar. 29
SAO78848
XZ 95083XZ 95192
ZC 1056
ZC 1067

8.9
9.6
8.6
7.3
6.4

15.4msec
15.4
15.4
15.4
15.4

214195
1958585000001488x 822
1488x 822
1488x 822
1488x 822
1488x 822

Mar. 30
SAO79685
SAO79727
XZ105335
XZ105397

8.2
9.3
8.7
10.7

15.4
20.8
20.8
20.8

14816412013730001448x1096
968x 548
968x 548
968x 548

Mar. 31
SAO80341
XZ110985
XZ111116
SAO80370

8.4
10.4
9.4
9.2

15.4
15.4
15.4
15.4

154154170
16000001024x 768
1024x 7681024x 768
1024x 768

Time keeping: Garmin18LVC with HACSZTIP-GPS
The time stamp on capture software was confirmed by telephone JJY.

In R 1067, 90 msec step appeared in the light curve at the beginning of the disappearance. Although this
could be considered noise due to atmospheric fluctuations, the fact that the duration of the dimming islonger than the amplitude before the event suggests that the drop is most likely due to a companion star,so it is listed as a double star.
2. Image of light curve graph