Astronomy Answers
Planetary Phenomena 1955


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

1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105

[1955] [Q 1955]

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
1955−01−02T21
** 
S +208.83
1955−01−06T08 Lu p 0.002427
1955−01−06T09 Lu v +75.89
1955−01−06T13 Lu +d +24.49
1955−01−07T17 Lu xd +95.54
1955−01−08T12 Lu o +107.47
1955−01−11T11 Me v +300.85
1955−01−13T19
** 
B +167.27
1955−01−14T21 Ju p 4.257
1955−01−15T19 Ju o +114.90
1955−01−15T20 Ju V +114.90
1955−01−16T13 Ur o +115.65
1955−01−16T20 Ur V +115.64
1955−01−17T06 Ur p 17.66
1955−01−18T03 Lu a 0.002706
1955−01−18T03 Lu V +231.40
1955−01−20T10 Lu d −24.47
1955−01−21T19 Lu xa +275.47
1955−01−24T01 Lu c +303.28
1955−01−24T22 Ne d −9.24
1955−01−26T00 Ve e −46.84
1955−01−27T20 Me xd +325.56
1955−01−28T07 Me e +18.43
1955−01−29T02
** 
S +262.38
1955−01−29T15 Ne Rg +208.24
1955−02−02T18 Lu p 0.002464
1955−02−02T21 Lu +d +24.42
1955−02−02T23 Lu v +79.64
1955−02−03T01
** 
s +184.97
1955−02−03T12 Ma xd +13.83
1955−02−03T20 Me Rg +329.65
1955−02−04T01 Lu xd +95.05
1955−02−07T01 Lu o +137.51
1955−02−07T11 Me +d −9.32
1955−02−10T07
** 
B +190.15
1955−02−12T19 Me c +323.30
1955−02−13T09 Me V +322.61
1955−02−13T16 Ve d −20.66
1955−02−14T23 Me p 0.6430
1955−02−15T00 Lu a 0.002702
1955−02−15T04 Lu V +239.78
1955−02−15T10 Pl V +145.55
1955−02−15T12 Pl c +145.55
1955−02−16T18 Lu d −24.34
1955−02−17T14
** 
b +182.36
1955−02−17T22 Pl p 34.05
1955−02−18T01 Lu xa +274.20
1955−02−21T13 Sa d −15.76
1955−02−22T15 Lu c +333.25
1955−02−24T16
** 
S +279.03
1955−02−25T10 Me Pg +314.35
1955−02−26T17 Lu v +30.56
1955−02−27T13 Lu p 0.002469
1955−03−01T04 Sa Rg +231.17
1955−03−02T03 Lu +d +24.22
1955−03−03T04 Lu xd +93.10
1955−03−04T12 Me d −15.31
1955−03−07T04 Me xa +318.74
1955−03−07T23
** 
B +198.85
1955−03−08T15 Lu o +167.30
1955−03−09T21
** 
s +185.09
1955−03−10T22 Me e −27.44
1955−03−14T20 Lu a 0.002704
1955−03−15T05 Lu V +247.86
1955−03−16T03 Lu d −24.08
1955−03−16T20 Ju Pg +109.88
1955−03−17T05 Lu xa +271.50
1955−03−17T18 Ju +d +22.46
1955−03−20T09
** 
S +295.07
1955−03−21T17 Ve xa +319.66
1955−03−24T03 Lu c +2.74
1955−03−26T05 Lu v +33.15
1955−03−26T15 Lu p 0.002435
1955−03−29T08 Lu +d +23.96
1955−03−30T04 Lu xd +90.14
1955−03−30T04 Ur +d +21.91
1955−04−01T10 Ur Pg +113.59
1955−04−02T04
** 
B +182.85
1955−04−07T06 Lu o +196.67
1955−04−11T13 Lu a 0.002709
1955−04−12T02 Lu V +254.49
1955−04−12T10 Lu d −23.83
1955−04−13T06 Lu xa +268.56
1955−04−14T01
** 
S +226.85
1955−04−17T10 Pl +d +23.23
1955−04−17T16 Ne o +206.87
1955−04−17T23 Ne V +206.86
1955−04−18T13 Ne p 29.32
1955−04−20T00 Me a 1.334
1955−04−22T13 Lu c +31.63
1955−04−23T12 Me o +32.94
1955−04−23T12 Lu v +46.17
1955−04−23T18 Lu p 0.002404
1955−04−25T16 Lu +d +23.75
1955−04−25T19 Me xd +37.90
1955−04−26T06 Me v +38.82
1955−04−26T07 Lu xd +87.62
1955−04−29T10
** 
B +142.55
1955−05−06T14 Pl Pg +144.29
1955−05−06T22 Lu o +225.61
1955−05−08T23 Lu a 0.002714
1955−05−09T06 Sa o +227.87
1955−05−09T08 Sa p 8.890
1955−05−09T09 Sa V +227.86
1955−05−09T13 Lu V +256.75
1955−05−09T16 Lu d −23.69
1955−05−10T09 Lu xa +266.75
1955−05−11T22
** 
S +171.11
1955−05−20T19 Me +d +25.41
1955−05−21T20 Lu c +60.04
1955−05−22T00 Lu v +61.99
1955−05−22T01 Me e +22.31
1955−05−22T03 Lu p 0.002389
1955−05−23T01 Lu +d +23.68
1955−05−23T14 Lu xd +86.48
1955−05−26T19
** 
B +113.23
1955−05−27T05 Ma +d +24.46
1955−06−03T03 Me xa +88.81
1955−06−03T22 Me Rg +88.84
1955−06−05T02 Lu a 0.002716
1955−06−05T07 Lu V +251.06
1955−06−05T14 Lu o +254.14
1955−06−05T21 Lu d −23.67
1955−06−06T14 Lu xa +266.33
1955−06−09T11
** 
S +147.13
1955−06−15T05 Me p 0.5520
1955−06−16T00 Me V +84.48
1955−06−16T06 Me c +84.34
1955−06−19T12 Lu +d +23.67
1955−06−19T13 Lu v +78.66
1955−06−19T13 Lu p 0.002393
1955−06−20T01 Lu xd +86.40
1955−06−20T04 Lu c +88.08
1955−06−23T06
** 
B +99.22
1955−06−26T03 Me d +18.53
1955−06−27T22 Me Pg +80.15
1955−07−02T05 Lu V +246.67
1955−07−02T08 Lu a 0.002713
1955−07−03T03 Lu d −23.68
1955−07−03T07 Ne +d −8.23
1955−07−03T21 Lu xa +266.43
1955−07−05T05 Lu o +282.44
1955−07−07T04
** 
S +134.09
1955−07−07T15 Ne Pg +205.46
1955−07−09T19 Me e −20.97
1955−07−10T15 Sa +d −13.97
1955−07−11T16 Ve +d +23.32
1955−07−12T20 Ve xd +95.92
1955−07−16T22 Lu +d +23.65
1955−07−17T11 Lu xd +86.25
1955−07−17T20 Lu p 0.002414
1955−07−18T00 Lu v +94.46
1955−07−19T06 Sa Pg +224.50
1955−07−19T11 Lu c +116.03
1955−07−20T15 Ur a 19.63
1955−07−21T10 Ur v +117.97
1955−07−21T12 Ur c +117.98
1955−07−21T20
** 
B +81.53
1955−07−22T19 Me xd +104.27
1955−07−22T22 Me +d +22.68
1955−07−29T18 Lu V +249.66
1955−07−29T22 Lu a 0.002707
1955−07−30T11 Lu d −23.61
1955−07−31T02 Lu xa +265.87
1955−08−01T19 Me v +124.38
1955−08−03T11 Ju v +130.92
1955−08−03T19 Lu o +310.69
1955−08−04T05 Ju c +131.08
1955−08−04T18
** 
S +114.84
1955−08−05T03 Ju a 6.325
1955−08−05T11 Me o +132.07
1955−08−10T00 Me a 1.354
1955−08−13T06 Lu +d +23.52
1955−08−13T17 Lu xd +85.01
1955−08−14T17 Lu p 0.002446
1955−08−15T04 Lu v +105.93
1955−08−17T00 Pl a 35.90
1955−08−17T03 Ma c +143.45
1955−08−17T20 Lu c +144.14
1955−08−18T07 Ma a 2.675
1955−08−18T23
** 
B +65.29
1955−08−20T07 Pl v +146.47
1955−08−20T12 Pl o +146.47
1955−08−26T13 Lu V +255.63
1955−08−26T15 Lu a 0.002702
1955−08−26T19 Lu d −23.43
1955−08−27T06 Lu xa +263.94
1955−08−28T20 Ve a 1.728
1955−08−30T02 Me xa +176.44
1955−08−30T11 Ma V +151.94
1955−09−01T12 Ve o +158.33
1955−09−02T07 Lu o +339.07
1955−09−02T20
** 
S +109.09
1955−09−09T12 Lu +d +23.30
1955−09−09T19 Lu xd +82.50
1955−09−10T00 Lu p 0.002472
1955−09−10T14 Lu v +93.61
1955−09−16T02
** 
B +65.57
1955−09−16T06 Lu c +172.61
1955−09−18T10 Me e +26.42
1955−09−23T03 Lu d −23.17
1955−09−23T08 Lu xa +261.00
1955−09−23T10 Lu a 0.002702
1955−09−23T12 Lu V +262.66
1955−10−01T04
** 
S +112.57
1955−10−01T12 Me d −14.41
1955−10−01T13 Me Rg +208.63
1955−10−01T19 Lu o +78.85
1955−10−04T20 Lu v +51.23
1955−10−05T10 Lu p 0.002455
1955−10−06T17 Lu +d +23.05
1955−10−06T19 Lu xd +79.65
1955−10−12T04 Me p 0.6613
1955−10−13T09 Me V +200.31
1955−10−13T12
** 
b +58.27
1955−10−13T20 Me c +199.73
1955−10−14T04
** 
B +68.83
1955−10−15T19 Lu c +201.67
1955−10−18T18 Me xd +194.68
1955−10−19T19 Ve v +218.44
1955−10−20T10 Lu d −22.95
1955−10−20T11 Lu xa +258.46
1955−10−21T05 Ne a 31.32
1955−10−21T06 Lu a 0.002707
1955−10−21T10 Lu V +269.82
1955−10−21T22 Ne v +207.97
1955−10−22T03 Ne c +207.98
1955−10−22T19 Me Pg +193.16
1955−10−25T01 Me +d −3.91
1955−10−29T08
** 
S +116.91
1955−10−29T09 Me e −18.43
1955−10−30T11 Pl d +21.81
1955−10−31T06 Lu o +37.04
1955−11−01T09 Ve xa +234.18
1955−11−01T20 Lu v +60.94
1955−11−02T03 Lu p 0.002419
1955−11−02T20 Ve V +235.96
1955−11−03T00 Lu xd +77.79
1955−11−03T00 Lu +d +22.89
1955−11−05T09 Ur d +20.19
1955−11−08T07 Ur Rg +122.33
1955−11−10T13
** 
B +80.92
1955−11−10T22 Ve v +246.07
1955−11−14T12 Lu c +231.35
1955−11−16T16 Lu xa +257.34
1955−11−16T17 Lu d −22.84
1955−11−16T19 Sa v +233.79
1955−11−16T20 Sa a 10.93
1955−11−16T22 Sa c +233.81
1955−11−16T23 Me v +223.72
1955−11−17T22 Lu a 0.002714
1955−11−18T04 Lu V +275.34
1955−11−26T02 Me xa +238.27
1955−11−27T01
** 
S +135.54
1955−11−29T16 Lu o +66.70
1955−11−30T09 Lu xd +77.33
1955−11−30T10 Lu +d +22.84
1955−11−30T10 Lu v +77.78
1955−11−30T11 Lu p 0.002392
1955−11−30T20 Pl Rg +148.60
1955−12−02T21 Ve d −24.65
1955−12−04T11 Me o +251.52
1955−12−05T01 Me a 1.451
1955−12−06T07 Me V +254.40
1955−12−08T08
** 
B +104.83
1955−12−13T22 Lu xa +257.36
1955−12−13T23 Lu d −22.84
1955−12−14T07 Lu c +261.51
1955−12−14T16 Ju d +11.83
1955−12−15T05 Lu V +272.75
1955−12−15T06 Lu a 0.002717
1955−12−18T03 Ju Rg +151.50
1955−12−18T17 Me d −25.39
1955−12−23T07 Me v +281.18
1955−12−25T08
** 
S +166.60
1955−12−27T21 Lu xd +77.30
1955−12−27T21 Lu +d +22.84
1955−12−29T00 Lu p 0.002384
1955−12−29T03 Lu v +96.38
1955−12−29T03 Lu o +96.65



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