Astronomy Answers: Planetary Phenomena 1948

Astronomy Answers
Planetary Phenomena 1948


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

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[1948] [Q 1948]

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
1948-01-02T15
** 
B +156.96
1948-01-02T23 Me o +282.01
1948-01-06T01 Lu xd +232.27
1948-01-08T01 Ma Rg +157.61
1948-01-09T19 Lu d −26.85
1948-01-10T05 Ne d −3.71
1948-01-10T19 Lu c +290.01
1948-01-12T17 Lu a 0.002718
1948-01-13T02 Lu V +317.08
1948-01-14T06 Ne Rg +193.00
1948-01-18T13
** 
S +288.66
1948-01-18T16 Me v +308.06
1948-01-20T16 Lu xa +50.75
1948-01-23T23 Lu +d +26.89
1948-01-25T19 Lu o +125.27
1948-01-25T23 Lu p 0.002383
1948-01-26T00 Lu v +128.69
1948-01-28T17
** 
B +194.50
1948-02-02T02 Lu xd +229.55
1948-02-02T05 Me xd +330.89
1948-02-04T02 Me e +18.26
1948-02-06T00 Lu d −26.96
1948-02-08T05 Lu V +303.59
1948-02-08T10 Sa p 8.189
1948-02-08T14 Sa o +139.24
1948-02-08T14 Sa V +139.24
1948-02-08T18 Lu a 0.002719
1948-02-09T15 Lu c +320.30
1948-02-09T22
** 
S +312.48
1948-02-10T15 Me Rg +336.52
1948-02-13T19 Me +d −6.66
1948-02-16T18 Lu xa +47.61
1948-02-17T01 Ma V +147.98
1948-02-17T04 Ma o +147.93
1948-02-17T08 Ma p 0.6776
1948-02-19T14 Me c +330.39
1948-02-20T06 Me V +329.64
1948-02-20T08 Lu +d +27.09
1948-02-22T02 Me p 0.6356
1948-02-22T22 Ve xd +13.90
1948-02-23T05
** 
B +190.82
1948-02-23T11 Lu p 0.002390
1948-02-23T12 Lu v +144.06
1948-02-24T05 Lu o +155.03
1948-02-28T13 Ur d +23.36
1948-02-28T23 Ur Pg +82.11
1948-02-29T04 Lu xd +226.43
1948-03-01T07
** 
s +292.75
1948-03-03T12 Me Pg +321.55
1948-03-04T06 Lu d −27.18
1948-03-06T11 Lu V +303.41
1948-03-06T17
** 
S +304.74
1948-03-07T01 Lu a 0.002715
1948-03-10T01 Me d −13.37
1948-03-10T09 Lu c +350.22
1948-03-11T13 Me xa +324.58
1948-03-14T19 Lu xa +45.09
1948-03-17T05 Me e −27.66
1948-03-18T16 Lu +d +27.30
1948-03-19T14 Ma +d +18.71
1948-03-20T21
** 
B +172.56
1948-03-22T19 Lu v +157.05
1948-03-22T19 Lu p 0.002417
1948-03-24T15 Lu o +184.41
1948-03-27T10 Lu xd +224.50
1948-03-29T00 Ma Pg +138.11
1948-03-31T13 Lu d −27.38
1948-03-31T22 Ne o +191.63
1948-04-01T06 Ne V +191.62
1948-04-01T13
** 
S +234.26
1948-04-01T21 Ne p 29.29
1948-04-03T10 Lu V +311.33
1948-04-03T18 Lu a 0.002709
1948-04-09T01 Lu c +19.61
1948-04-10T23 Lu xa +44.07
1948-04-14T05 Ve e +45.66
1948-04-14T19 Ju Rg +268.95
1948-04-14T21 Lu +d +27.44
1948-04-15T07 Sa +d +17.30
1948-04-16T14 Sa Pg +135.76
1948-04-17T04
** 
B +145.14
1948-04-19T12 Lu p 0.002452
1948-04-19T12 Lu v +162.67
1948-04-23T01 Lu o +213.30
1948-04-23T20 Lu xd +224.04
1948-04-26T02 Me a 1.330
1948-04-27T22 Lu d −27.47
1948-04-29T00 Me o +39.40
1948-04-29T00
** 
S +185.73
1948-04-30T05 Me xd +42.03
1948-05-01T08 Me v +44.45
1948-05-01T12 Lu V +320.27
1948-05-01T13 Lu a 0.002703
1948-05-05T12 Ju d −22.93
1948-05-06T01 Ve +d +27.41
1948-05-08T06 Lu xa +44.07
1948-05-08T14 Lu c +48.37
1948-05-12T03 Lu +d +27.47
1948-05-14T23
** 
B +117.24
1948-05-14T23 Lu v +136.87
1948-05-15T04 Lu p 0.002472
1948-05-21T04 Lu xd +224.07
1948-05-22T12 Lu o +241.81
1948-05-23T16 Me +d +25.61
1948-05-25T06 Lu d −27.44
1948-05-28T00
** 
S +159.50
1948-05-28T15 Me e +23.01
1948-05-29T07 Lu a 0.002703
1948-05-29T13 Lu V +328.97
1948-06-02T13 Ve Rg +101.15
1948-06-04T15 Lu xa +43.88
1948-06-06T20
** 
b +120.28
1948-06-07T00 Lu c +76.68
1948-06-07T13 Me xa +96.83
1948-06-08T10 Lu +d +27.41
1948-06-10T04 Lu v +121.72
1948-06-10T07 Lu p 0.002447
1948-06-10T23 Me Rg +97.27
1948-06-11T02
** 
B +108.85
1948-06-13T12 Ve xa +98.79
1948-06-14T18 Ju o +264.07
1948-06-14T19 Ju V +264.06
1948-06-16T05 Ju p 4.261
1948-06-16T17 Ur a 20.06
1948-06-16T21 Ur v +86.31
1948-06-17T03 Ur c +86.32
1948-06-17T08 Ne +d −2.61
1948-06-17T10 Lu xd +223.44
1948-06-20T17 Ne Pg +190.22
1948-06-21T00 Lu o +270.05
1948-06-21T14 Lu d −27.39
1948-06-21T21 Me p 0.5559
1948-06-23T05 Me V +92.73
1948-06-23T14 Me c +92.50
1948-06-23T22 Ve p 0.2897
1948-06-24T00 Ve V +92.94
1948-06-24T01 Ve c +92.92
1948-06-25T04
** 
S +162.43
1948-06-26T01 Lu a 0.002708
1948-06-26T13 Lu V +336.95
1948-06-30T17 Me d +18.73
1948-07-01T21 Lu xa +42.47
1948-07-05T00 Me Pg +88.30
1948-07-05T19 Lu +d +27.39
1948-07-06T09 Lu c +104.67
1948-07-08T00 Lu v +128.81
1948-07-08T02 Lu p 0.002415
1948-07-08T12
** 
B +116.99
1948-07-11T13
** 
s +134.83
1948-07-14T12 Lu xd +221.48
1948-07-15T17 Ve Pg +84.64
1948-07-16T04 Me e −20.39
1948-07-18T19 Lu d −27.41
1948-07-20T09 Ve d +17.84
1948-07-20T14 Lu o +298.23
1948-07-22T08
** 
S +164.66
1948-07-23T14 Lu a 0.002714
1948-07-24T08 Lu V +343.01
1948-07-26T02 Me +d +22.15
1948-07-27T04 Me xd +108.82
1948-07-29T01 Lu xa +39.80
1948-08-02T05 Lu +d +27.49
1948-08-03T19 Ju +d −22.71
1948-08-04T16 Lu c +132.64
1948-08-05T05 Lu v +141.13
1948-08-05T08 Lu p 0.002393
1948-08-06T05
** 
B +108.63
1948-08-06T21 Me v +129.91
1948-08-10T13 Lu xd +218.65
1948-08-10T23 Me o +138.36
1948-08-12T21 Ma xa +196.41
1948-08-15T00 Lu d −27.54
1948-08-15T12 Ju Pg +259.10
1948-08-16T05 Me a 1.361
1948-08-18T15 Sa v +146.14
1948-08-18T18 Sa c +146.15
1948-08-18T22 Sa a 10.23
1948-08-19T05 Lu o +326.63
1948-08-19T21 Lu a 0.002717
1948-08-20T07
** 
S +152.54
1948-08-20T14 Lu V +342.83
1948-08-21T16 Ve +d +18.97
1948-08-25T02 Lu xa +37.00
1948-08-29T14 Lu +d +27.67
1948-09-02T14 Lu v +155.52
1948-09-02T18 Lu p 0.002387
1948-09-02T23 Lu c +160.86
1948-09-03T06 Ve e −45.87
1948-09-03T12 Me xa +180.57
1948-09-03T15
** 
B +102.46
1948-09-06T17 Lu xd +216.16
1948-09-11T06 Lu d −27.75
1948-09-15T23 Lu V +332.49
1948-09-15T23 Lu a 0.002715
1948-09-17T21 Lu o +209.82
1948-09-18T06
** 
S +150.94
1948-09-21T05 Lu xa +35.27
1948-09-24T16 Me e +26.02
1948-09-25T21 Lu +d +27.84
1948-10-01T00 Lu v +170.19
1948-10-01T03 Lu p 0.002402
1948-10-02T02
** 
B +103.41
1948-10-02T07 Lu c +189.52
1948-10-04T01 Lu xd +215.02
1948-10-04T14 Ne a 31.29
1948-10-04T16 Ve xd +148.49
1948-10-05T10 Ne v +192.74
1948-10-05T14 Ne c +192.74
1948-10-05T18 Ur Rg +90.58
1948-10-07T01 Me d −16.62
1948-10-07T13 Me Rg +215.42
1948-10-08T13 Lu d −27.90
1948-10-13T06 Lu V +332.67
1948-10-13T09 Lu a 0.002710
1948-10-16T09
** 
S +150.79
1948-10-17T14 Lu o +24.62
1948-10-18T01 Me p 0.6655
1948-10-18T10 Lu xa +34.88
1948-10-19T02 Me V +207.05
1948-10-19T12 Me c +206.52
1948-10-23T03 Lu +d +27.94
1948-10-23T03 Me xd +202.40
1948-10-28T11 Me Pg +199.76
1948-10-29T06 Lu v +182.77
1948-10-29T07 Lu p 0.002433
1948-10-29T21
** 
B +102.88
1948-10-30T11 Me +d −6.20
1948-10-31T11 Lu xd +214.94
1948-10-31T18 Lu c +218.73
1948-11-04T06 Me e −18.71
1948-11-04T22 Lu d −27.94
1948-11-10T02 Lu a 0.002705
1948-11-10T03 Lu V +339.34
1948-11-14T03
** 
S +156.12
1948-11-14T17 Lu xa +34.98
1948-11-15T18
** 
b +87.26
1948-11-16T06 Lu o +54.34
1948-11-19T09 Lu +d +27.90
1948-11-20T01 Ju d −23.38
1948-11-25T07 Me v +233.98
1948-11-25T09 Lu v +179.84
1948-11-25T12 Lu p 0.002468
1948-11-27T07
** 
B +113.80
1948-11-27T11 Ma d −24.44
1948-11-27T20 Lu xd +214.73
1948-11-30T06 Lu c +248.50
1948-11-30T11 Me xa +242.15
1948-12-02T07 Lu d −27.85
1948-12-02T16 Ur +d +23.65
1948-12-06T09 Me V +251.42
1948-12-07T23 Lu a 0.002703
1948-12-08T04 Lu V +347.89
1948-12-10T21 Sa d +10.68
1948-12-11T04 Me a 1.450
1948-12-11T23 Me o +260.23
1948-12-12T01 Lu xa +34.11
1948-12-13T16
** 
S +176.15
1948-12-15T21 Lu o +84.35
1948-12-16T10 Sa Rg +156.21
1948-12-16T16 Lu +d +27.82
1948-12-19T14 Lu v +137.22
1948-12-19T23 Ur o +88.54
1948-12-20T05 Lu p 0.002465
1948-12-20T06 Ur V +88.53
1948-12-20T09 Ur p 18.03
1948-12-21T01 Me d −25.25
1948-12-25T00 Lu xd +213.19
1948-12-26T01 Ju xa +279.13
1948-12-26T04
** 
B +134.46
1948-12-29T15 Lu d −27.81
1948-12-29T21 Ju a 6.188
1948-12-29T21 Lu c +278.63
1948-12-30T17 Me v +290.12
1948-12-31T15 Ju c +280.42



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