Astronomy Answers: Planetary Phenomena 1984

Astronomy Answers
Planetary Phenomena 1984


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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

[1984] [Q 1984]

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
1984-01-02T15 Lu d −25.20
1984-01-02T17 Lu c +282.03
1984-01-05T14 Me +d −20.16
1984-01-07T07 Lu a 0.002711
1984-01-07T15 Lu V +341.59
1984-01-09T14 Ne d −22.28
1984-01-10T12 Me Pg +270.39
1984-01-11T19
** 
b +48.41
1984-01-14T20
** 
S +99.08
1984-01-15T03 Lu xa +75.36
1984-01-16T22 Lu +d +25.21
1984-01-18T02 Lu o +117.68
1984-01-19T09 Lu p 0.002404
1984-01-19T11 Lu v +138.41
1984-01-21T20 Me e −24.29
1984-01-22T10 Ju d −23.14
1984-01-27T16
** 
B +44.23
1984-01-27T19 Lu xd +254.78
1984-01-28T22 Me d −22.41
1984-01-29T17 Ve d −22.35
1984-01-29T20 Lu d −25.24
1984-01-29T23 Me xa +286.72
1984-02-01T11 Lu c +312.33
1984-02-03T20 Lu a 0.002717
1984-02-04T09 Lu V +346.76
1984-02-11T09 Lu xa +73.24
1984-02-12T13
** 
S +107.38
1984-02-13T08 Lu +d +25.34
1984-02-16T12 Lu o +147.57
1984-02-16T15 Sa d −14.39
1984-02-16T20 Lu p 0.002384
1984-02-16T21 Lu v +153.33
1984-02-18T01 Ve xa +299.22
1984-02-23T19 Lu xd +252.09
1984-02-24T01 Sa Rg +226.39
1984-02-24T08
** 
B +65.38
1984-02-26T01 Lu d −25.41
1984-03-01T05 Me a 1.379
1984-03-01T17 Lu V +336.09
1984-03-01T22 Lu a 0.002719
1984-03-02T06 Lu c +342.39
1984-03-06T09 Ve v +320.59
1984-03-07T23 Me o +347.92
1984-03-09T11 Lu xa +70.16
1984-03-11T16 Lu +d +25.57
1984-03-12T01
** 
S +131.62
1984-03-15T00 Me v +1.71
1984-03-16T00 Ve V +332.46
1984-03-16T08 Lu v +168.42
1984-03-16T09 Lu p 0.002387
1984-03-16T22 Lu o +177.03
1984-03-17T16 Ur Rg +253.57
1984-03-18T20 Ur d −22.39
1984-03-19T15 Me xd +10.75
1984-03-21T21 Lu xd +249.01
1984-03-22T21
** 
B +98.18
1984-03-23T07 Ve v +341.49
1984-03-24T07 Lu d −25.67
1984-03-28T15 Lu V +331.81
1984-03-29T04 Lu a 0.002716
1984-04-01T00 Lu c +11.98
1984-04-01T23 Ne Rg +271.43
1984-04-02T10 Me e +18.92
1984-04-05T00 Ma Rg +238.35
1984-04-05T12 Lu xa +67.64
1984-04-07T23 Lu +d +25.80
1984-04-08T04
** 
S +162.46
1984-04-10T17 Me +d +16.70
1984-04-11T08 Me Rg +36.70
1984-04-13T16 Lu v +181.88
1984-04-13T17 Lu p 0.002410
1984-04-15T07 Lu o +205.99
1984-04-15T18 Ma d −18.77
1984-04-18T04 Lu xd +247.05
1984-04-20T02
** 
B +118.84
1984-04-20T16 Lu d −25.89
1984-04-21T16 Me c +32.25
1984-04-22T10 Me V +31.74
1984-04-24T13 Ju +d −22.62
1984-04-24T17 Me p 0.5661
1984-04-25T11 Lu V +338.31
1984-04-25T19 Lu a 0.002710
1984-04-26T22 Me xa +28.81
1984-04-29T06 Ju Rg +282.97
1984-04-30T15 Lu c +40.96
1984-05-02T16 Lu xa +66.62
1984-05-02T17 Sa V +223.09
1984-05-02T20 Sa o +223.08
1984-05-02T22 Sa p 8.853
1984-05-05T02 Me Pg +26.31
1984-05-05T04
** 
S +177.17
1984-05-05T05 Lu +d +25.95
1984-05-08T01 Ma xa +231.84
1984-05-09T14 Me d +7.83
1984-05-10T20 Ma o +230.85
1984-05-11T13 Lu v +189.64
1984-05-11T14 Lu p 0.002444
1984-05-13T10 Ma V +229.93
1984-05-14T16 Lu o +234.51
1984-05-15T13 Lu xd +246.54
1984-05-16T14
** 
B +133.12
1984-05-18T01 Lu d −25.96
1984-05-18T22 Ma p 0.5315
1984-05-19T08 Me e −25.38
1984-05-23T11 Lu V +346.69
1984-05-23T13 Lu a 0.002704
1984-05-29T23 Lu xa +66.60
1984-05-30T04 Lu c +69.45
1984-05-30T21 Ne +d −22.22
1984-05-31T03
** 
S +202.74
1984-06-01T06 Ur V +251.57
1984-06-01T06 Ur p 18.00
1984-06-01T09 Ur o +251.57
1984-06-01T11 Lu +d +25.97
1984-06-03T02
** 
s +229.02
1984-06-06T17 Lu v +173.47
1984-06-06T23 Lu p 0.002470
1984-06-10T04 Ve xd +78.55
1984-06-11T02 Ve V +79.66
1984-06-11T22 Lu xd +246.64
1984-06-11T22 Ma +d −16.88
1984-06-11T22
** 
B +145.21
1984-06-13T02 Lu o +262.78
1984-06-14T10 Lu d −25.95
1984-06-14T23 Ve o +84.45
1984-06-15T03 Ve a 1.736
1984-06-15T14 Me xd +76.66
1984-06-19T06 Ma Pg +221.70
1984-06-20T07 Lu a 0.002702
1984-06-20T12 Lu V +355.13
1984-06-20T18 Ne o +270.05
1984-06-21T01 Ne p 29.25
1984-06-21T01 Ne V +270.04
1984-06-21T16 Me v +89.80
1984-06-22T18 Ve +d +23.87
1984-06-23T00 Me o +92.70
1984-06-23T13 Me a 1.325
1984-06-24T10
** 
S +192.22
1984-06-24T18 Me +d +24.67
1984-06-26T07 Lu xa +66.42
1984-06-28T15 Lu c +97.56
1984-06-28T19 Lu +d +25.93
1984-06-29T04 Ju o +278.08
1984-06-29T09 Ju V +278.05
1984-06-30T10 Ju p 4.206
1984-07-02T05 Lu v +149.00
1984-07-02T11 Lu p 0.002455
1984-07-04T14 Sa +d −12.43
1984-07-08T16
** 
B +119.38
1984-07-09T03 Lu xd +246.02
1984-07-11T17 Lu d −25.94
1984-07-12T14 Lu o +290.87
1984-07-12T17 Sa Pg +219.70
1984-07-18T01 Lu a 0.002706
1984-07-18T13 Lu V +3.26
1984-07-21T01
** 
S +151.91
1984-07-23T14 Lu xa +65.11
1984-07-23T21 Me xa +147.69
1984-07-26T04 Lu +d +25.98
1984-07-26T13 Ju xa +274.86
1984-07-27T23 Lu c +125.57
1984-07-29T21 Lu v +153.53
1984-07-29T23 Ve v +139.73
1984-07-30T00 Lu p 0.002422
1984-07-31T07 Me e +27.23
1984-08-04T14
** 
B +90.10
1984-08-05T05 Lu xd +244.15
1984-08-07T22 Lu d −26.02
1984-08-11T03 Lu o +319.13
1984-08-14T07 Me Rg +163.40
1984-08-14T16 Lu a 0.002712
1984-08-15T10 Lu V +10.19
1984-08-16T05 Ur +d −21.86
1984-08-17T06 Me d +2.65
1984-08-17T14 Ur Pg +249.54
1984-08-18T09
** 
S +129.93
1984-08-19T18 Lu xa +62.51
1984-08-22T13 Lu +d +26.13
1984-08-22T17
** 
b +89.99
1984-08-25T01 Me p 0.6195
1984-08-26T07 Lu c +153.71
1984-08-27T01 Lu v +165.22
1984-08-27T05 Lu p 0.002396
1984-08-27T06 Me V +156.20
1984-08-28T02 Me c +155.46
1984-08-29T10 Ju Pg +273.13
1984-08-31T13
** 
B +80.57
1984-09-01T06 Lu xd +241.30
1984-09-04T04 Lu d −26.21
1984-09-04T04
** 
s +91.78
1984-09-06T15 Me Pg +150.03
1984-09-09T04 Ne Pg +268.66
1984-09-09T19 Lu o +347.74
1984-09-11T01 Lu a 0.002716
1984-09-11T09 Me +d +10.83
1984-09-11T13 Me xd +151.83
1984-09-11T20 Lu V +12.35
1984-09-13T12 Me e −17.90
1984-09-14T21
** 
S +123.90
1984-09-15T19 Lu xa +59.65
1984-09-17T11 Ju d −23.49
1984-09-18T21 Lu +d +26.35
1984-09-24T11 Lu v +179.72
1984-09-24T14 Lu p 0.002386
1984-09-24T15 Lu c +182.23
1984-09-28T10 Lu xd +238.73
1984-09-29T06
** 
B +62.10
1984-09-29T15 Me v +178.75
1984-09-29T18 Ve xa +215.62
1984-10-01T10 Lu d −26.45
1984-10-02T08 Ma d −25.59
1984-10-08T02 Lu a 0.002716
1984-10-08T07 Lu V +2.74
1984-10-09T11 Lu o +16.87
1984-10-09T23 Me o +197.20
1984-10-12T21 Lu xa +57.84
1984-10-13T08
** 
S +104.14
1984-10-16T04 Lu +d +26.57
1984-10-17T13 Me a 1.428
1984-10-19T21 Me xa +213.68
1984-10-22T22 Lu v +195.22
1984-10-23T01 Lu p 0.002396
1984-10-24T00 Lu c +211.27
1984-10-25T18 Lu xd +237.56
1984-10-27T04
** 
B +41.59
1984-10-28T18 Lu d −26.62
1984-11-04T08 Lu V +359.91
1984-11-04T11 Lu a 0.002712
1984-11-08T05 Lu o +46.52
1984-11-09T03 Lu xa +57.41
1984-11-09T22
** 
b +48.41
1984-11-10T16 Sa a 10.89
1984-11-10T19 Sa c +229.08
1984-11-11T01 Sa v +229.11
1984-11-11T05
** 
S +98.05
1984-11-12T09 Lu +d +26.64
1984-11-15T21 Ve d −25.47
1984-11-20T07 Lu v +209.43
1984-11-20T08 Lu p 0.002425
1984-11-22T05 Lu xd +237.42
1984-11-22T10 Lu c +240.84
1984-11-24T08
** 
B +42.43
1984-11-24T10 Me d −25.79
1984-11-25T04 Lu d −26.63
1984-11-25T07 Me e +21.70
1984-12-02T03 Lu a 0.002706
1984-12-02T03 Lu V +5.94
1984-12-04T09 Me Rg +270.81
1984-12-05T01 Ur v +253.79
1984-12-05T05 Ur c +253.81
1984-12-05T09 Ur a 20.03
1984-12-06T10 Lu xa +57.47
1984-12-07T22 Lu o +76.56
1984-12-08T12 Me xd +269.25
1984-12-09T15 Lu +d +26.61
1984-12-09T17
** 
S +104.78
1984-12-13T06 Ne d −22.32
1984-12-14T02 Me c +262.80
1984-12-14T03 Me V +262.75
1984-12-14T04 Me p 0.6775
1984-12-17T21 Lu p 0.002463
1984-12-17T22 Lu v +213.54
1984-12-19T14 Lu xd +237.25
1984-12-20T10 Ur xa +254.73
1984-12-21T23
** 
B +60.57
1984-12-21T23 Lu c +270.86
1984-12-22T00 Ne a 31.24
1984-12-22T07 Ne v +271.15
1984-12-22T07 Ne c +271.15
1984-12-22T13 Lu d −26.60
1984-12-23T00 Me +d −19.58
1984-12-24T04 Me Pg +254.51
1984-12-25T16 Ma v +330.70
1984-12-30T00 Lu a 0.002703
1984-12-30T04 Lu V +14.33



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