Astronomy Answers: Planetary Phenomena 1940

Astronomy Answers
Planetary Phenomena 1940


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The diagram below is explained further on the page for the year 2000.

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[1940] [Q 1940]

For an explanation of the above pictures, see the page for the year 2000.

The last table on this page lists a number of noteworthy planetary phenomena during the listed year. The first column ("date") gives the date and hour, in the form year-month-dayThour in the Gregorian calendar, in Universal Time (UT). The second column ("pl") identifies the planet that shows the phenomenon:

pl Planet
Me Mercury
Ve Venus
Ma Mars
Ju Jupiter
Sa Saturn
Ur Uranus
Ne Neptune
Lu Moon

The third column ("*") provides the type of the phenomenon. The fourth column ("AU") shows the value (distance) in Astronomical Units, if applicable. The fifth column ("deg") gives the value of a relevant angle (declination \( δ \), elongation \( E \), conjunction spread \( σ \), or ecliptic longitude \( λ \)) in degrees. Which angle it is for each phenomenon is shown below in column "?". Declinations and ecliptical longitudes are measured relative to the equinox of the date.

 ?  
Explanation
p perigee
a apogee
+dδgreatest northern declination
dδgreatest southern declination
cλconjunction (with the Sun)
oλopposition (relative to the Sun)
eEgreatest elongation
xaλpassage through the ascending node (zero ecliptical latitude)
xdλpassage through the descending node (zero ecliptical latitude)
bσleast conjunction spread (Mercury - Saturn)
Bσleast conjunction spread (Mercury - Neptune)
sσgreatest conjunction spread (Mercury - Saturn)
Sσgreatest conjunction spread (Mercury - Neptune)
Vλbegin eastward (prograde) acceleration
Pgλstationary point: begin eastward (prograde) motion
vλbegin westward (retrograde) acceleration
Rgλstationary point: begin westward (retrograde) motion

The calculations for the planets are based on the VSOP87 model (type A) of Laskar, and the calculations for the Moon are based on the most detailed model from [Meeus]. One position per day was calculated for each celestial object. The hour of the day for each phenomenon was determined by interpolation.

date pl * AU deg
1940-01-02T15 Me xa +265.28
1940-01-02T20 Lu xa +206.22
1940-01-07T03 Lu d −19.05
1940-01-09T01 Lu c +288.16
1940-01-11T10 Me d −24.16
1940-01-13T23 Lu a 0.002709
1940-01-14T13 Lu V +354.36
1940-01-16T02
** 
B +119.10
1940-01-17T02 Lu xd +24.39
1940-01-17T08 Ma xd +9.44
1940-01-19T17 Ma v +11.06
1940-01-21T16 Lu +d +18.97
1940-01-23T20 Me a 1.421
1940-01-24T11 Lu o +123.85
1940-01-24T14 Ur d +16.90
1940-01-25T16 Lu v +142.27
1940-01-25T23 Lu p 0.002409
1940-01-26T05 Ur Pg +47.98
1940-01-28T08
** 
S +157.52
1940-01-29T20 Lu xa +203.09
1940-01-30T23 Me o +310.28
1940-02-03T10 Lu d −18.89
1940-02-07T19 Lu c +318.40
1940-02-10T13 Lu a 0.002715
1940-02-11T07 Lu V +359.84
1940-02-11T14 Me v +330.94
1940-02-13T03 Lu xd +21.51
1940-02-13T18
** 
B +97.09
1940-02-18T03 Lu +d +18.77
1940-02-21T06 Me xd +347.90
1940-02-22T21 Lu o +153.65
1940-02-23T04 Lu v +158.06
1940-02-23T09 Lu p 0.002387
1940-02-23T21 Ve xd +14.47
1940-02-26T01 Lu xa +200.76
1940-02-26T09
** 
S +138.05
1940-02-27T19 Me e +18.07
1940-03-01T03
** 
b +27.85
1940-03-01T17 Lu d −18.69
1940-03-05T17 Me Rg +0.25
1940-03-07T17 Me +d +3.05
1940-03-08T14 Lu c +348.38
1940-03-08T17 Lu a 0.002718
1940-03-09T06 Lu V +356.19
1940-03-11T06 Lu xd +20.10
1940-03-12T06
** 
B +89.10
1940-03-14T04 Ne V +174.15
1940-03-14T08 Ne o +174.14
1940-03-15T01 Me c +354.84
1940-03-15T03 Ne p 29.23
1940-03-15T22 Me V +354.04
1940-03-16T11 Lu +d +18.60
1940-03-18T08 Me p 0.6068
1940-03-22T19 Lu v +175.27
1940-03-22T22 Lu p 0.002387
1940-03-23T07 Lu o +183.04
1940-03-24T10 Lu xa +200.00
1940-03-25T21
** 
S +140.84
1940-03-28T14 Me Pg +346.84
1940-03-29T00 Lu d −18.56
1940-03-30T14 Me xa +347.02
1940-04-03T04 Me d −5.38
1940-04-04T20 Lu V +348.44
1940-04-04T21 Lu a 0.002716
1940-04-07T08 Lu c +17.86
1940-04-07T12 Lu xd +19.99
1940-04-09T18 Ju v +21.45
1940-04-09T21
** 
B +93.11
1940-04-11T09 Ju c +21.85
1940-04-11T17 Me e −27.59
1940-04-12T17 Lu +d +18.55
1940-04-13T00 Ju a 5.954
1940-04-16T14 Ve e +45.63
1940-04-17T13
** 
s +56.94
1940-04-20T07 Lu p 0.002406
1940-04-20T08 Lu v +191.61
1940-04-20T21 Lu xa +200.05
1940-04-21T16 Lu o +211.89
1940-04-23T02
** 
S +138.14
1940-04-24T05 Sa c +34.38
1940-04-24T07 Sa a 10.26
1940-04-24T12 Sa v +34.42
1940-04-25T09 Lu d −18.57
1940-05-02T08 Lu V +350.96
1940-05-02T11 Lu a 0.002710
1940-05-04T19 Lu xd +19.99
1940-05-06T00 Ve +d +27.33
1940-05-07T00 Lu c +46.78
1940-05-08T15
** 
B +86.08
1940-05-09T23 Lu +d +18.61
1940-05-11T07
** 
b +55.62
1940-05-12T00 Ur v +51.98
1940-05-12T09 Ur c +52.00
1940-05-12T14 Ur a 20.60
1940-05-17T23 Ma +d +24.56
1940-05-18T05 Lu xa +199.56
1940-05-18T07 Lu p 0.002438
1940-05-18T13 Lu v +204.25
1940-05-19T05 Me xd +55.99
1940-05-20T07 Me a 1.323
1940-05-20T23 Me o +59.83
1940-05-21T01 Lu o +240.35
1940-05-21T21
** 
S +131.37
1940-05-22T11 Me v +63.06
1940-05-22T19 Lu d −18.66
1940-05-30T04 Lu V +357.14
1940-05-30T04 Lu a 0.002703
1940-05-31T11 Ne +d +4.02
1940-06-01T00 Lu xd +18.89
1940-06-02T19 Ne Pg +172.72
1940-06-04T21 Ve Rg +103.30
1940-06-05T10 Me +d +25.50
1940-06-05T13 Lu c +75.17
1940-06-05T22
** 
B +83.75
1940-06-06T07 Lu +d +18.69
1940-06-14T02 Lu p 0.002468
1940-06-14T09 Lu xa +197.81
1940-06-14T10 Ve xa +101.50
1940-06-14T12 Lu v +199.08
1940-06-19T06 Lu d −18.69
1940-06-19T11 Lu o +268.48
1940-06-19T12
** 
S +133.85
1940-06-24T03 Me e +25.30
1940-06-26T06 Ve p 0.2898
1940-06-26T07 Ve V +95.10
1940-06-26T09 Ve c +95.07
1940-06-26T13 Me xa +120.39
1940-06-26T23 Lu a 0.002701
1940-06-27T02 Lu V +3.92
1940-06-28T03 Lu xd +16.50
1940-07-03T16 Lu +d +18.67
1940-07-03T20
** 
B +88.56
1940-07-04T23 Lu c +103.25
1940-07-08T02 Me Rg +125.31
1940-07-08T12 Lu v +153.47
1940-07-09T07 Lu p 0.002461
1940-07-11T10 Lu xa +195.10
1940-07-13T21
** 
s +77.04
1940-07-16T14 Lu d −18.63
1940-07-16T22
** 
S +137.03
1940-07-16T23 Me d +15.15
1940-07-18T01 Ve Pg +86.78
1940-07-18T13 Me p 0.5784
1940-07-18T22 Lu o +296.55
1940-07-20T22 Me V +119.75
1940-07-21T16 Me c +119.21
1940-07-21T22 Ve d +17.77
1940-07-23T10
** 
b +76.68
1940-07-24T09 Ma V +133.64
1940-07-24T17 Lu a 0.002704
1940-07-24T23 Lu V +10.53
1940-07-25T05 Lu xd +13.64
1940-07-31T03 Lu +d +18.55
1940-07-31T09
** 
B +89.41
1940-08-01T06 Me Pg +114.64
1940-08-03T08 Lu c +131.31
1940-08-05T05 Lu v +159.06
1940-08-05T15 Lu p 0.002429
1940-08-07T12 Lu xa +192.59
1940-08-10T02 Me e −18.90
1940-08-12T00 Me +d +19.21
1940-08-12T21 Lu d −18.48
1940-08-13T22
** 
S +141.02
1940-08-15T05 Me xd +125.07
1940-08-17T11 Lu o +324.85
1940-08-19T09 Sa +d +13.90
1940-08-21T08 Lu xd +11.61
1940-08-21T09 Lu a 0.002711
1940-08-21T17 Lu V +16.10
1940-08-22T05 Ve +d +18.80
1940-08-25T18 Ma a 2.676
1940-08-26T18 Sa Rg +44.78
1940-08-27T12 Lu +d +18.38
1940-08-28T02
** 
B +102.72
1940-08-28T12 Me v +149.14
1940-08-29T20 Ma c +156.82
1940-08-31T03 Ur +d +19.03
1940-08-31T13 Ur Rg +56.15
1940-08-31T21 Ju +d +15.28
1940-09-01T16 Lu c +159.55
1940-09-02T13 Lu v +172.90
1940-09-02T18 Lu p 0.002400
1940-09-03T18 Lu xa +191.25
1940-09-03T23 Me o +161.79
1940-09-04T00 Ju Rg +45.68
1940-09-05T16 Ve e −45.89
1940-09-09T03 Lu d −18.32
1940-09-10T20 Me a 1.389
1940-09-11T21
** 
S +165.24
1940-09-16T02 Lu o +353.57
1940-09-16T22 Ne a 31.24
1940-09-17T14 Lu xd +10.99
1940-09-17T20 Lu a 0.002715
1940-09-17T20 Ne c +175.25
1940-09-18T00 Ne v +175.26
1940-09-18T02 Lu V +17.23
1940-09-22T12 Me xa +194.22
1940-09-23T20 Lu +d +18.27
1940-09-25T09
** 
B +129.73
1940-10-01T00 Lu c +188.19
1940-10-01T03 Lu v +190.03
1940-10-01T04 Lu p 0.002387
1940-10-01T05 Lu xa +191.01
1940-10-05T13 Ve xd +149.10
1940-10-06T10 Lu d −18.27
1940-10-10T08
** 
S +205.51
1940-10-14T16 Lu V +9.26
1940-10-14T20 Lu xd +11.08
1940-10-14T22 Lu a 0.002716
1940-10-15T20 Lu o +22.82
1940-10-20T01 Me e +24.33
1940-10-21T03 Lu +d +18.30
1940-10-23T21
** 
B +160.78
1940-10-28T16 Lu xa +190.96
1940-10-29T06 Me d −22.49
1940-10-29T15 Lu p 0.002394
1940-10-29T19 Lu v +208.07
1940-10-30T10 Lu c +217.35
1940-10-31T13 Me Rg +238.12
1940-11-01T07 Ju p 3.981
1940-11-02T06 Ju V +40.66
1940-11-02T16 Ju o +40.60
1940-11-02T19 Lu d −18.34
1940-11-03T03 Sa V +41.32
1940-11-03T07 Sa p 8.218
1940-11-03T08 Sa o +41.30
1940-11-04T20
** 
s +207.26
1940-11-07T15
** 
S +257.63
1940-11-10T16 Me p 0.6753
1940-11-10T18 Lu V +6.99
1940-11-11T01 Lu xd +10.63
1940-11-11T04 Me xd +229.84
1940-11-11T04 Lu a 0.002712
1940-11-11T06 Me V +229.74
1940-11-11T11 Me c +229.44
1940-11-14T14 Lu o +52.59
1940-11-15T23 Ur p 18.57
1940-11-16T03 Ur o +54.13
1940-11-16T04 Ur V +54.12
1940-11-16T09
** 
b +203.40
1940-11-17T09 Lu +d +18.41
1940-11-20T16 Me Pg +222.05
1940-11-21T20 Me +d −13.18
1940-11-21T21
** 
B +176.89
1940-11-24T23 Lu xa +189.73
1940-11-27T00 Lu p 0.002420
1940-11-27T08 Lu v +224.52
1940-11-28T11
** 
s +206.59
1940-11-28T12 Me e −20.05
1940-11-28T20 Lu c +247.01
1940-11-30T07 Lu d −18.45
1940-12-08T05 Lu xd +8.66
1940-12-08T06
** 
S +310.18
1940-12-08T12 Lu V +12.18
1940-12-08T20 Lu a 0.002706
1940-12-14T07 Lu o +82.69
1940-12-14T17 Lu +d +18.49
1940-12-19T12 Me xa +255.56
1940-12-22T01 Lu xa +187.05
1940-12-24T17 Lu p 0.002457
1940-12-25T10 Lu v +235.02
1940-12-25T21 Ne d +2.07
1940-12-26T09 Ju d +12.29
1940-12-27T18 Lu d −18.48
1940-12-28T08 Lu c +277.00
1940-12-29T06 Ne Rg +177.70
1940-12-30T12 Ju Pg +35.68



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