Astronomy Answers: Planetary Phenomena 1986

Astronomy Answers
Planetary Phenomena 1986


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\(\def\|{&}\DeclareMathOperator{\D}{\bigtriangleup\!} \DeclareMathOperator{\d}{\text{d}\!}\)

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

[1986] [Q 1986]

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
1986-01-02T02
** 
b +66.01
1986-01-02T17 Me xa +266.12
1986-01-05T00 Lu xd +216.69
1986-01-05T00 Ve v +281.53
1986-01-07T19 Lu p 0.002429
1986-01-08T04 Lu v +263.34
1986-01-08T12
** 
B +52.36
1986-01-09T01 Lu d −27.63
1986-01-10T00 Lu c +289.99
1986-01-11T02 Me d −24.11
1986-01-18T02 Lu xa +35.34
1986-01-18T23 Ve o +299.09
1986-01-19T05 Lu V +48.81
1986-01-19T13 Lu a 0.002705
1986-01-21T07 Ve a 1.712
1986-01-23T02 Lu +d +27.69
1986-01-23T13
** 
S +109.33
1986-01-24T01 Me a 1.420
1986-01-25T12 Lu o +125.77
1986-02-01T00 Me o +312.67
1986-02-01T00 Lu xd +213.64
1986-02-04T03 Lu p 0.002465
1986-02-04T22 Lu v +269.20
1986-02-05T08 Lu d −27.76
1986-02-05T12
** 
B +65.48
1986-02-08T12 Lu c +319.97
1986-02-11T18 Me v +331.96
1986-02-14T04 Lu xa +32.27
1986-02-16T06 Lu V +56.95
1986-02-16T10 Lu a 0.002702
1986-02-17T12 Ju v +329.37
1986-02-17T15 Ju a 6.011
1986-02-17T22 Ju c +329.47
1986-02-19T10 Lu +d +27.87
1986-02-21T09 Me xd +348.81
1986-02-21T11
** 
S +127.30
1986-02-24T03 Lu o +155.71
1986-02-28T00 Me e +18.07
1986-02-28T01 Lu xd +211.10
1986-02-28T15 Lu v +219.08
1986-02-28T21 Lu p 0.002468
1986-03-04T14 Lu d −27.96
1986-03-05T20
** 
B +88.19
1986-03-06T22 Me Rg +1.32
1986-03-08T22 Me +d +3.48
1986-03-09T06 Sa d −19.99
1986-03-10T02 Lu c +349.73
1986-03-13T08 Lu xa +30.36
1986-03-16T06 Lu V +64.73
1986-03-16T06 Lu a 0.002705
1986-03-16T07 Me c +355.92
1986-03-17T03 Me V +355.12
1986-03-18T18 Lu +d +28.05
1986-03-18T19 Sa Rg +249.71
1986-03-19T14 Me p 0.6064
1986-03-20T22
** 
S +138.41
1986-03-25T15 Lu o +185.15
1986-03-26T00 Ma xa +269.18
1986-03-27T00 Ur Rg +262.38
1986-03-27T08 Lu xd +210.04
1986-03-27T23 Lu v +219.53
1986-03-28T02 Lu p 0.002433
1986-03-29T20 Me Pg +347.93
1986-03-31T14 Ur d −23.30
1986-03-31T16 Me xa +348.09
1986-03-31T19 Lu d −28.11
1986-04-02T05
** 
B +95.66
1986-04-04T09 Me d −4.98
1986-04-06T22 Ne Rg +275.81
1986-04-08T18 Lu c +19.11
1986-04-09T15 Lu xa +29.92
1986-04-12T22 Me e −27.58
1986-04-12T23 Lu a 0.002711
1986-04-13T01 Lu V +70.52
1986-04-15T02 Lu +d +28.14
1986-04-15T07 Ve xd +46.56
1986-04-18T04
** 
S +155.94
1986-04-23T18 Lu xd +210.03
1986-04-24T00 Lu o +214.05
1986-04-24T16 Ne +d −22.22
1986-04-25T05 Lu p 0.002402
1986-04-25T07 Lu v +233.19
1986-04-28T03 Lu d −28.13
1986-04-29T09
** 
B +119.21
1986-05-06T22 Lu xa +30.01
1986-05-08T10 Lu c +48.03
1986-05-10T08 Lu V +70.74
1986-05-10T10 Lu a 0.002716
1986-05-12T09 Lu +d +28.10
1986-05-15T15
** 
S +194.46
1986-05-20T08 Me xd +56.85
1986-05-21T04 Lu xd +209.70
1986-05-21T12 Me a 1.323
1986-05-23T00 Me o +62.63
1986-05-23T08 Lu o +242.40
1986-05-23T15 Lu p 0.002387
1986-05-23T15 Me v +64.04
1986-05-23T18 Ve +d +24.97
1986-05-23T18 Lu v +248.88
1986-05-25T12 Lu d −28.07
1986-05-26T07
** 
B +151.34
1986-05-27T12 Sa o +246.41
1986-05-27T16 Sa p 8.979
1986-05-27T19 Sa V +246.39
1986-06-03T02 Lu xa +29.37
1986-06-05T21 Lu V +62.61
1986-06-06T05 Me +d +25.47
1986-06-06T14 Lu a 0.002718
1986-06-07T02 Lu c +76.55
1986-06-08T11 Ma Rg +293.11
1986-06-08T14 Lu +d +28.02
1986-06-09T01
** 
S +228.50
1986-06-10T20 Ur p 18.13
1986-06-10T21 Ur V +260.39
1986-06-11T02 Ur o +260.38
1986-06-17T06
** 
s +291.23
1986-06-17T11 Lu xd +208.28
1986-06-21T00 Lu p 0.002391
1986-06-21T05 Lu v +263.98
1986-06-21T15 Lu o +270.46
1986-06-21T17
** 
B +153.76
1986-06-21T22 Lu d −28.00
1986-06-25T09 Me e +25.33
1986-06-25T19 Ne o +274.43
1986-06-26T01 Ne p 29.23
1986-06-26T03 Ne V +274.42
1986-06-27T15 Me xa +121.36
1986-06-30T04 Lu xa +27.35
1986-07-03T02 Lu V +61.78
1986-07-03T20 Lu a 0.002715
1986-07-03T23
** 
S +206.16
1986-07-05T19 Lu +d +28.00
1986-07-06T16 Lu c +104.78
1986-07-08T13 Ju +d −4.02
1986-07-09T08 Me Rg +126.43
1986-07-09T17 Ma o +287.68
1986-07-11T06 Ma V +287.24
1986-07-12T04 Ju Rg +352.86
1986-07-14T14 Lu xd +205.67
1986-07-15T22 Ma p 0.4036
1986-07-18T00 Me d +14.88
1986-07-18T06
** 
B +138.21
1986-07-19T07 Lu p 0.002412
1986-07-19T07 Lu d −28.04
1986-07-19T13 Lu v +277.47
1986-07-19T19 Me p 0.5788
1986-07-20T22 Lu o +298.41
1986-07-22T04 Me V +120.85
1986-07-22T23 Me c +120.31
1986-07-25T08 Sa +d −18.96
1986-07-27T06 Lu xa +24.49
1986-07-30T19 Lu V +67.12
1986-07-31T03
** 
S +188.74
1986-07-31T09 Lu a 0.002708
1986-08-01T15 Ma d −28.71
1986-08-02T01 Lu +d +28.10
1986-08-02T12 Me Pg +115.73
1986-08-04T20 Ve xa +177.32
1986-08-05T06 Lu c +133.03
1986-08-06T15 Sa Pg +243.06
1986-08-10T15 Lu xd +202.96
1986-08-11T08 Me e −18.89
1986-08-11T19 Ma Pg +281.42
1986-08-13T00 Me +d +19.00
1986-08-14T23
** 
B +124.46
1986-08-15T15 Lu d −28.18
1986-08-16T04 Lu p 0.002445
1986-08-16T07 Me xd +126.00
1986-08-16T12 Lu v +286.29
1986-08-19T06 Lu o +326.48
1986-08-23T10 Lu xa +22.01
1986-08-26T07 Ur +d −23.03
1986-08-26T08 Ve e +46.04
1986-08-26T19
** 
S +161.37
1986-08-27T07 Ur Pg +258.36
1986-08-27T18 Lu V +74.47
1986-08-28T02 Lu a 0.002703
1986-08-29T08 Lu +d +28.27
1986-08-29T17 Me v +150.15
1986-09-03T19 Lu c +161.46
1986-09-04T23 Me o +162.43
1986-09-06T18 Lu xd +201.26
1986-09-10T01 Ju p 3.972
1986-09-10T01 Ju V +347.90
1986-09-10T09 Ju o +347.86
1986-09-11T10
** 
B +96.21
1986-09-11T11 Lu p 0.002472
1986-09-11T21 Lu d −28.35
1986-09-12T01 Me a 1.389
1986-09-12T03 Lu v +276.94
1986-09-14T03 Ne Pg +273.04
1986-09-17T17 Lu o +270.64
1986-09-19T17 Lu xa +20.92
1986-09-23T15 Me xa +195.04
1986-09-23T22
** 
S +132.84
1986-09-24T19 Lu V +82.72
1986-09-24T21 Lu a 0.002703
1986-09-25T16 Lu +d +28.41
1986-10-03T06 Lu c +190.30
1986-10-04T01 Lu xd +200.85
1986-10-06T22 Lu p 0.002455
1986-10-07T00 Lu v +243.29
1986-10-08T19
** 
B +76.21
1986-10-09T02 Lu d −28.43
1986-10-15T04 Ve Rg +230.40
1986-10-16T11 Ve d −24.47
1986-10-17T01 Lu xa +20.91
1986-10-17T07 Lu o +24.13
1986-10-21T06 Me e +24.30
1986-10-22T13
** 
S +121.96
1986-10-22T17 Lu a 0.002708
1986-10-22T20 Lu V +91.20
1986-10-23T00 Lu +d +28.43
1986-10-23T11
** 
b +94.50
1986-10-29T00 Ne d −22.36
1986-10-30T09 Me d −22.71
1986-10-31T11 Lu xd +200.88
1986-11-01T18 Lu c +219.51
1986-11-01T18 Me Rg +239.16
1986-11-03T14 Lu p 0.002419
1986-11-03T16 Lu v +248.39
1986-11-04T18
** 
B +75.89
1986-11-04T22 Ve c +222.71
1986-11-05T03 Ve V +222.57
1986-11-05T07 Ju d −7.98
1986-11-05T09 Lu d −28.39
1986-11-05T17 Ve p 0.2696
1986-11-07T20 Ju Pg +342.97
1986-11-11T21 Me p 0.6755
1986-11-12T07 Me xd +231.00
1986-11-12T10 Me V +230.78
1986-11-12T16 Me c +230.49
1986-11-13T07 Lu xa +20.75
1986-11-16T00 Lu o +53.86
1986-11-19T05
** 
S +133.35
1986-11-19T07 Lu +d +28.34
1986-11-19T09 Lu a 0.002714
1986-11-19T17 Lu V +98.19
1986-11-21T21 Me Pg +223.09
1986-11-23T00 Me +d −13.48
1986-11-25T14 Ve Pg +214.90
1986-11-25T23 Ve xd +214.90
1986-11-27T08
** 
s +115.95
1986-11-27T20 Lu xd +200.05
1986-11-29T17 Me e −20.06
1986-12-01T04 Lu c +249.19
1986-12-01T22 Lu p 0.002391
1986-12-02T00 Lu v +261.97
1986-12-02T16
** 
B +87.00
1986-12-02T18 Lu d −28.30
1986-12-03T21 Sa v +252.18
1986-12-03T23 Sa a 11.00
1986-12-04T03 Sa c +252.21
1986-12-06T22 Ve +d −12.14
1986-12-10T10 Lu xa +19.24
1986-12-14T05 Ur v +262.57
1986-12-14T08 Ur c +262.58
1986-12-14T15 Ur a 20.16
1986-12-15T19 Lu o +84.04
1986-12-16T13 Lu +d +28.25
1986-12-16T15
** 
S +132.02
1986-12-16T16 Lu a 0.002717
1986-12-16T16 Lu V +94.85
1986-12-20T14 Me xa +256.38
1986-12-25T01 Lu xd +197.58
1986-12-26T21 Ne a 31.22
1986-12-27T02 Ne c +275.53
1986-12-27T08 Ne v +275.54
1986-12-30T05 Lu d −28.26
1986-12-30T11 Lu p 0.002384
1986-12-30T12 Lu v +277.64
1986-12-30T15 Lu c +279.14
1986-12-30T22
** 
B +81.84



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