Talk:Transit of Mercury

message: Hello! This is a note to let the editors of this article know that :File:Mercury transit 2.jpg will be appearing as picture of the day on November 7, 2011. You can view and edit the POTD blurb at Template:POTD/2011-11-07. If this article needs any attention or maintenance, it would be preferable if that could be done before its appearance on the Main Page so Wikipedia doesn't look bad. :) Thanks! howcheng  {chat} 19:57, 4 November 2011 (UTC)
thread_title:  [[:File:Mercury transit 2.jpg]] to appear as POTD soon 

message: Last transit Nov 2006. Next transit May 2016. That is 9.5 years. Therefore why does article state transits only occur every 7, 13 or 33 years - or are the dates wrong?
"November transits occur at intervals of 7, 13, or 33 years ; May transits only occur at intervals of 13 or 33 years. The last three transits occurred in 1999, 2003 and 2006 ; the next will occur in 2016." Tiddy (talk) 03:46, 7 November 2011 (UTC)
replies: text: The intervals are from one November transit to the next November transit, or from one May transit to the next May transit. Since you're measuring the time between one November transit and the next May transit, the numbers won't come out right. I've reworded that sentence to make its intended meaning clearer. Double sharp (talk) 04:52, 7 June 2012 (UTC)
thread_title:  Error in Intervals? 

message: I entered an item twice then mistakenly deleted someone else's comment instead of my repeated entry. Now I cant find that deleted item to reinstate it, as there appears to be no history section for discussion items. Sorry. Tiddy (talk) 01:45, 16 November 2011 (UTC)
thread_title:  Apology 

message: I changed the years of simultaneous Mercury and Venus transits. The numbers were mangled. The text The last simultaneous transit occurred in 373173 BC showed 373,173 BC which was very confusing it could mean both the years 373 and 173 BC. The macro  issues wrong results as it does not observe ISO standards which prescribe spaces rather than commas as thousands separator. More Wikipedia pages have this error.
S k a t e b i k e r (talk) 11:36, 11 May 2012 (UTC)
thread_title:  Wrong number display 

message: Hallo everyone. Read also https://en.wikipedia.org/w/index.php?title=Transit_of_Mercury&oldid=726166700 Greetings of Nico from Gouda, the Netherlands. 84.80.54.162 (talk) 15:56, 5 July 2016 (UTC)
thread_title:  Transits of Mercury in the (far) past and also in the (far) future. 

message: Before about the year -9000 the forward motion of the ascending node of the orbit of Mercury as seen from the Earth was changed in a backwards motion and this means that then after each 217 year the chords of the transits of Mercury on the solar disc moved Southwards instead of Northwards (which it nowadays does).
For example 217 years series #1:
 -22739/07/10 - 0.27003 (first transit of this 217 years series)
 After 4 x 217 years = 868 years
 -21871/07/14 - 0.25833
 From now after each 10 x 217 years = 2170 years
 -19701/07/24 - 0.23217
 -17531/08/03 - 0.20926
 -15361/08/13 - 0.19001
 -13191/08/23 - 0.17436
 -11021/09/02 - 0.16312
  -8851/09/12 - 0.15789
  -6681/09/23 - 0.15941
  -4511/10/02 - 0.17031
  -2341/10/13 - 0.19115
   -171/10/23 - 0.22304
   1999/11/15 - 0.26750  (last transit of this 217 years series)
Please note: before 1582 the Julian Calendar is used!
The solar radius is about 0.2700 during each transit and always Mercury will pass North of the midpoint of the solar disc. 
Because both nodes are turning forward and backwards in direction in time, a 217 years series can last about 50,000 years! For example the 217 years series of which the november transit of 1914/11/07 is a member of it, began on -35410/05/06 and will end on 14284/04/05. But from -50,000 till +50,000 there are NO more 'turningpoints' of the transits of Mercury at the ascending node as seen from the Earth. Source: http://www.solexorb.it/SolexOld/ and then click on Mercury. 84.80.54.162 (talk) 17:10, 1 August 2016 (UTC)
thread_title:  The nowadays November transits 

message: Because the 217 year timeperiod is very more accuracy than the wellknown 46 years timeperiod, you can add an extra column on http://fourmilab.ch/documents/canon_transits/ and then click in the Transit Index Table on 40540, you get then this table below.
But unfortunately in this table non-central transits such in 1937 and 2608 (2608 is the last one of the 217-yearsseries #20) are NOT listed! Please note: after the year -1 follows the year 1 in this long table!
But on https://eclipse.gsfc.nasa.gov/transit/catalog/MercuryCatalog.html fortunately the transit of 1937 is listed.
   Date               Sunrad  Max.    # of 217-yearsseries   
   ...                ...     ...     ...     
   1776-11-02 21:35   0.2690  0.2626  39
   1782-11-12 15:07   0.2696  0.2622   1
   1786-05-04 05:31   0.2641  0.1919  18
   1789-11-05 15:07   0.2692  0.1227  29
   1799-05-07 12:43   0.2639  0.0939   8
   1802-11-09 08:52   0.2693  0.0167  19
   1815-11-12 02:24   0.2695  0.1543   9
   1822-11-05 02:24   0.2690  0.2335  37
   1832-05-05 12:14   0.2641  0.1352  16
   1835-11-07 19:55   0.2692  0.0942  27
   1845-05-08 19:26   0.2639  0.1516   6
   1848-11-09 13:40   0.2693  0.0450  17
   1861-11-12 07:11   0.2695  0.1825   7
   1868-11-05 07:11   0.2690  0.2046  35
   1878-05-06 18:57   0.2641  0.0804  14
   1881-11-08 00:43   0.2692  0.0658  25
   1891-05-10 02:09   0.2639  0.2089   4
   1894-11-10 18:28   0.2693  0.0737  15
   1907-11-14 12:00   0.2695  0.2105   5
   1914-11-07 12:00   0.2691  0.1756  33
   1924-05-08 01:40   0.2640  0.0250  12
   1927-11-10 05:45   0.2692  0.0375  23
   1937-05-11 08:59           955.5    2 (re-first transit of an OLD 217-yearsseries, because at the descending node the transits move backward instead of forward such as at the ascending node does after each 217 year)
   1940-11-11 23:16   0.2694  0.1021  13
   1953-11-14 16:48   0.2695  0.2391   3
   1957-05-06 01:11   0.2642  0.2525  20
   1960-11-07 16:48   0.2691  0.1469  31
   1970-05-09 08:09   0.2640  0.0312  10
   1973-11-10 10:19   0.2692  0.0138  21
   1986-11-13 04:04   0.2694  0.1306  11
   1993-11-06 03:50   0.2689  0.2577  39
   1999-11-15 21:35   0.2695  0.2672   1 (last transit of this 217-yearsseries)
   2003-05-07 07:40   0.2642  0.1973  18 (re-first total transit on -9932-03-08 and re-last total transit on 64718-05-30)
   2006-11-08 21:35   0.2691  0.1177  29
   2016-05-09 14:52   0.2640  0.0880   8 (re-first total transit on -2975-04-07 and re-last total transit on 30010-04-05)
   2019-11-11 15:07   0.2692  0.0238  19 (first total transit on -31399-05-27 and last total transit on 9615-02-11)
   2032-11-13 08:52   0.2694  0.1588   9
   2039-11-07 08:38   0.2689  0.2287  37
   2049-05-07 14:24   0.2642  0.1427  16
   2052-11-09 02:24   0.2691  0.0888  27
   2062-05-10 21:35   0.2640  0.1442   6
   2065-11-11 19:55   0.2693  0.0510  17
   2078-11-14 13:40   0.2694  0.1871   7
   2085-11-07 13:26   0.2690  0.2000  35
   2095-05-08 21:07   0.2642  0.0867  14
   2098-11-10 07:11   0.2691  0.0599  25
   2108-05-12 04:19   0.2640  0.2010   4
   2111-11-14 00:43   0.2693  0.0793  15
   2124-11-15 18:28   0.2694  0.2161   5
   2131-11-09 18:14   0.2690  0.1712  33
   2141-05-10 03:35   0.2641  0.0310  12
   2144-11-11 12:00   0.2691  0.0316  23
   2154-05-13 11:02   0.2640  0.2581   2
   2157-11-14 05:31   0.2693  0.1078  13
   2170-11-16 23:16   0.2694  0.2443   3
   2174-05-08 03:21   0.2643  0.2572  20
   2177-11-09 23:02   0.2690  0.1422  31
   2187-05-11 10:19   0.2641  0.0267  10
   2190-11-12 16:48   0.2691  0.0028  21
   2203-11-16 10:33   0.2693  0.1359  11
   2210-11-09 10:19   0.2688  0.2535  39
   2220-05-09 09:50   0.2643  0.2030  18
   ...                ...     ...     ...
The number of the nowadays November-transits in 217 years is nowadays slowly decreasing:
 -1 > 37:  8x 37 - -1 (-348 - 960)
  1 > 39:  4x 39 - 1 (1342 - 1999)
  3 > 41:  2x 41 - 3 (2815 - 3038) 
  5 > 43:  1x 43 - 5 (4071 and 4077)
  7 > 45:  0x 45 - 7 (after 7e in 4899 follows in the first next 217 jaar-cyclus 45b in 5110)
  9 > 47:  0x 47 - 9 (after 9e in 5939 - Jan. 1, follows (also) in the first next 217 jaar-cyclus 47b in 6149)
and so on.  (b = (re)begin of a new 217 year-series Mercury-transits, e = the (re)end of an old 217 year-series Mercury-transits) 
The number of the nowadays May-transits in 217 years is nowadays slowly increasing:
Two transits in 20 years: 
 not before the pairs 155 (the re-begin of the 217 years series #4) - 175 and 372 - 392 (the re-end of the 217 years series #22)(2x), 
 and then followed by 1937 (the re-begin of the 217 years series #2) - 1957 till 2588 - 2608 (the re-end of the 217 years series #20)(4x), 
 and then followed by 3936 (the re-begin of the 217 years series #0) - 3956 till 6106 - 6126 (the re-end of the 217 years series #18)(11x) 
 and then followed from the pair 6152 (the re-begin of the 217 years series #-2) - 6172 till far after 12,000.
At the nowadays November transits at the ascending node of the orbit of Mercury: If a new 217 year series has began, the next 217 year series will begin after .x217 years - 46 years. 
At the nowadays   May  transits at the  descending node of the orbit of Mercury: If a new 217 year series has began, the next 217 year series will begin after .x217 years + 46 years. 
84.80.54.162 (talk) 17:56, 1 November 2019 (UTC)
replies: text: You should propose specific changes to the article that you think need to be made. Ruslik_Zero 08:02, 3 November 2019 (UTC)
thread_title:  The 217-yearseries 

message: * This page should be renamed as "Mercury transit" and not as "transit of Mercury".  This is an event when Mercury transits Sol, not the other way around.  Nicole Sharp (talk) 21:29, 15 May 2022 (UTC)
thread_title:  wrong title