Astronomy Answers: Planetary Phenomena 2087

Astronomy Answers
Planetary Phenomena 2087


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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

[2087] [Q 2087]

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
2087-01-01T05 Lu xa +243.86
2087-01-02T08 Lu d −21.62
2087-01-02T13 Me v +293.51
2087-01-02T14 Ju Rg +168.90
2087-01-04T10 Lu c +284.72
2087-01-11T04 Lu v +18.57
2087-01-11T12 Ma +d +27.11
2087-01-12T01 Lu p 0.002475
2087-01-12T02
** 
B +178.26
2087-01-14T08 Lu xd +63.14
2087-01-15T11 Lu +d +21.57
2087-01-18T10 Lu o +119.07
2087-01-20T07 Me e +18.70
2087-01-21T11 Me xd +320.77
2087-01-24T17
** 
S +238.47
2087-01-25T12 Lu a 0.002703
2087-01-25T19 Lu V +210.98
2087-01-26T23 Me Rg +323.35
2087-01-28T09 Lu xa +241.87
2087-01-29T18 Lu d −21.48
2087-01-31T02 Me +d −11.69
2087-02-01T12
** 
b +161.93
2087-02-01T20 Ma Pg +87.18
2087-02-03T00 Lu c +314.88
2087-02-04T20 Me c +316.76
2087-02-05T07 Ne V +137.35
2087-02-05T09 Me V +316.13
2087-02-05T10 Ne o +137.35
2087-02-05T20 Ne p 29.10
2087-02-05T21 Lu v +356.07
2087-02-06T10 Lu p 0.002453
2087-02-06T17 Me p 0.6511
2087-02-07T23
** 
B +160.59
2087-02-10T09 Lu xd +60.47
2087-02-11T17 Lu +d +21.38
2087-02-12T08
** 
s +164.08
2087-02-17T01 Lu o +149.11
2087-02-17T03 Me Pg +307.73
2087-02-17T20 Ur v +329.97
2087-02-17T22 Ur c +329.97
2087-02-18T21 Ur a 21.01
2087-02-22T08 Lu a 0.002707
2087-02-22T08
** 
S +227.80
2087-02-22T19 Lu V +218.98
2087-02-24T12 Lu xa +238.75
2087-02-24T19 Me d −16.86
2087-02-26T03 Lu d −21.23
2087-02-28T17 Me xa +313.86
2087-03-02T09 Me e −27.05
2087-03-03T19 Ju o +163.96
2087-03-03T21 Ju V +163.95
2087-03-04T00 Ju p 4.423
2087-03-04T11 Lu c +344.62
2087-03-05T22 Lu v +6.11
2087-03-06T06 Lu p 0.002417
2087-03-06T21 Ve xd +23.17
2087-03-09T08
** 
B +148.02
2087-03-09T10 Lu xd +57.53
2087-03-10T23 Lu +d +21.12
2087-03-18T18 Lu o +178.85
2087-03-21T23 Lu a 0.002712
2087-03-22T14 Lu V +224.44
2087-03-23T01
** 
S +194.26
2087-03-23T13 Lu xa +236.14
2087-03-25T11 Lu d −20.98
2087-04-02T21 Lu c +13.92
2087-04-03T09 Lu v +21.27
2087-04-03T14 Lu p 0.002393
2087-04-05T15 Lu xd +55.57
2087-04-07T02
** 
B +126.77
2087-04-07T06 Lu +d +20.90
2087-04-11T14 Me a 1.340
2087-04-14T23 Me o +25.28
2087-04-17T11 Lu o +208.14
2087-04-18T04 Lu a 0.002716
2087-04-18T16 Lu V +222.53
2087-04-19T02 Me v +33.97
2087-04-19T10 Me xd +34.68
2087-04-19T17 Lu xa +235.08
2087-04-21T06
** 
S +167.70
2087-04-21T17 Lu d −20.84
2087-04-22T16 Sa c +33.26
2087-04-22T16 Sa a 10.26
2087-04-23T01 Sa v +33.31
2087-04-25T16 Ne Pg +135.93
2087-04-26T05 Ne +d +16.20
2087-05-01T23 Lu v +38.36
2087-05-02T01 Lu p 0.002388
2087-05-02T05 Lu c +42.64
2087-05-02T06 Ju +d +9.45
2087-05-03T01 Lu xd +55.07
2087-05-04T15 Lu +d +20.83
2087-05-04T16 Ju Pg +158.91
2087-05-05T15
** 
B +112.10
2087-05-06T22 Ve +d +26.48
2087-05-13T03 Me e +21.49
2087-05-15T04 Me +d +25.03
2087-05-15T06 Lu V +214.64
2087-05-15T07 Lu a 0.002715
2087-05-16T04 Ve e +45.40
2087-05-16T23 Lu xa +235.05
2087-05-17T03 Lu o +237.00
2087-05-18T23 Lu d −20.82
2087-05-19T06
** 
b +85.47
2087-05-20T16
** 
S +160.39
2087-05-25T10 Me Rg +80.62
2087-05-27T16 Me xa +80.43
2087-05-30T10 Lu p 0.002402
2087-05-30T12 Lu v +55.03
2087-05-30T12 Lu xd +55.03
2087-05-31T13 Lu c +70.85
2087-06-01T02 Lu +d +20.83
2087-06-02T13
** 
B +113.39
2087-06-05T02 Ur +d −10.76
2087-06-06T04 Me p 0.5494
2087-06-06T07 Me c +76.37
2087-06-06T07 Me V +76.36
2087-06-07T04 Ur Rg +333.98
2087-06-11T14 Lu V +215.14
2087-06-11T18 Lu a 0.002710
2087-06-13T06 Lu xa +234.90
2087-06-15T05 Lu d −20.84
2087-06-15T18 Lu o +265.39
2087-06-17T16
** 
S +168.27
2087-06-18T08 Me Pg +72.07
2087-06-18T15 Me d +17.88
2087-06-26T11 Ve xa +130.32
2087-06-26T18
** 
s +96.62
2087-06-26T20 Lu xd +54.46
2087-06-27T12 Lu p 0.002430
2087-06-27T20 Lu v +68.76
2087-06-28T12 Lu +d +20.83
2087-06-29T21 Lu c +98.85
2087-06-30T19
** 
B +119.08
2087-06-30T23 Me e −21.73
2087-07-03T20 Ve Rg +131.33
2087-07-09T07 Lu V +220.33
2087-07-09T10 Lu a 0.002704
2087-07-10T11 Lu xa +233.72
2087-07-12T13 Lu d −20.79
2087-07-15T07 Lu o +293.57
2087-07-15T15
** 
S +168.22
2087-07-16T10 Me xd +100.67
2087-07-17T13 Me +d +23.02
2087-07-22T20
** 
b +91.66
2087-07-24T00 Lu xd +52.59
2087-07-24T19 Lu p 0.002463
2087-07-25T06 Ve p 0.2900
2087-07-25T07 Ve c +123.13
2087-07-25T07 Ve V +123.13
2087-07-25T11 Lu v +73.52
2087-07-25T17 Me v +119.73
2087-07-25T21 Lu +d +20.72
2087-07-28T03 Ve d +13.46
2087-07-28T23
** 
B +118.57
2087-07-29T00 Me o +126.67
2087-07-29T06 Lu c +126.87
2087-08-01T13 Me a 1.347
2087-08-06T04 Lu a 0.002701
2087-08-06T04 Lu V +226.81
2087-08-06T13 Lu xa +231.24
2087-08-08T22 Lu d −20.62
2087-08-09T19 Ne a 31.10
2087-08-10T03 Ne v +138.46
2087-08-10T08 Ne c +138.47
2087-08-13T15
** 
S +176.91
2087-08-13T18 Lu o +321.79
2087-08-15T23 Ve Pg +114.84
2087-08-17T16 Sa +d +13.53
2087-08-18T03 Lu v +23.02
2087-08-18T22 Lu p 0.002468
2087-08-20T01 Lu xd +49.72
2087-08-22T04 Lu +d +20.51
2087-08-23T12 Ur p 19.02
2087-08-23T15 Me xa +173.07
2087-08-24T09 Ur o +331.99
2087-08-24T13 Ur V +331.99
2087-08-25T02 Sa Rg +43.64
2087-08-26T10
** 
B +131.04
2087-08-27T17 Lu c +155.19
2087-09-02T15 Lu xa +228.35
2087-09-02T23 Lu a 0.002704
2087-09-03T02 Lu V +233.69
2087-09-03T19 Ve +d +15.16
2087-09-05T07 Lu d −20.38
2087-09-09T21 Me e +26.83
2087-09-11T09
** 
S +194.07
2087-09-12T04 Lu o +350.16
2087-09-14T10 Lu v +22.59
2087-09-14T20 Lu p 0.002437
2087-09-16T03 Lu xd +47.28
2087-09-18T09 Lu +d +20.28
2087-09-20T19 Ju a 6.447
2087-09-21T14 Ju c +179.34
2087-09-22T15 Ju v +179.57
2087-09-23T07 Me Rg +202.31
2087-09-23T08
** 
s +120.26
2087-09-23T17 Me d −12.25
2087-09-24T19
** 
B +139.45
2087-09-26T06 Lu c +183.97
2087-09-29T19 Lu xa +226.44
2087-09-30T17 Lu a 0.002710
2087-09-30T23 Lu V +240.08
2087-10-02T14 Lu d −20.17
2087-10-04T01 Me p 0.6553
2087-10-04T19 Ve e −46.19
2087-10-05T10 Me V +194.08
2087-10-05T23 Me c +193.46
2087-10-09T14
** 
S +194.91
2087-10-10T23
** 
b +117.40
2087-10-11T14 Lu o +18.99
2087-10-12T09 Me xd +187.71
2087-10-12T17 Lu v +36.29
2087-10-12T21 Lu p 0.002404
2087-10-13T09 Lu xd +46.13
2087-10-14T22 Me Pg +187.10
2087-10-15T16 Lu +d +20.13
2087-10-17T12 Me +d −1.84
2087-10-17T14 Ve xd +159.28
2087-10-17T15 Ma xa +220.42
2087-10-21T10 Me e −18.17
2087-10-22T21
** 
B +139.70
2087-10-25T23 Lu c +213.31
2087-10-27T01 Lu xa +226.01
2087-10-28T06 Lu a 0.002716
2087-10-28T11 Lu V +243.06
2087-10-29T21 Lu d −20.09
2087-11-01T15 Sa V +40.18
2087-11-01T19 Sa p 8.217
2087-11-01T20 Sa o +40.16
2087-11-02T18 Ma a 2.498
2087-11-06T11 Ur d −12.17
2087-11-07T15 Me v +215.90
2087-11-08T04
** 
S +203.89
2087-11-08T09 Ur Pg +330.05
2087-11-09T20 Lu xd +46.10
2087-11-10T00 Lu o +48.36
2087-11-10T08 Lu p 0.002386
2087-11-10T08 Lu v +53.71
2087-11-12T01 Lu +d +20.09
2087-11-19T15 Me xa +235.30
2087-11-20T19 Ne d +14.69
2087-11-22T08 Ne Rg +140.95
2087-11-22T09
** 
B +147.08
2087-11-23T07 Lu xa +226.12
2087-11-23T23 Me o +242.24
2087-11-24T02 Lu V +235.15
2087-11-24T10 Lu a 0.002718
2087-11-24T18 Lu c +243.17
2087-11-26T03 Lu d −20.11
2087-11-26T16 Me a 1.451
2087-12-07T07 Lu xd +45.82
2087-12-08T08
** 
S +213.55
2087-12-08T20 Lu p 0.002388
2087-12-09T01 Lu v +72.07
2087-12-09T01 Ma c +257.70
2087-12-09T10 Lu o +78.02
2087-12-09T13 Lu +d +20.12
2087-12-13T22 Me d −25.49
2087-12-20T12 Lu xa +225.36
2087-12-21T01 Lu V +231.61
2087-12-21T14 Lu a 0.002715
2087-12-23T10 Lu d −20.13
2087-12-23T12
** 
B +151.30
2087-12-24T13 Lu c +273.43
2087-12-27T16 Ma d −24.10
2087-12-31T00 Sa d +11.42



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