Astronomy Answers: Planetary Phenomena 2009

Astronomy Answers
Planetary Phenomena 2009


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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

[2009] [Q 2009]

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
2009-01-04T03 Me e +19.31
2009-01-08T11 Me xd +307.07
2009-01-08T17 Lu +d +27.06
2009-01-09T20 Lu v +98.75
2009-01-09T22 Lu p 0.002390
2009-01-10T15 Lu o +111.03
2009-01-11T04 Me Rg +307.75
2009-01-11T20 Lu xd +129.27
2009-01-11T23
** 
S +141.26
2009-01-14T11 Ve e +47.12
2009-01-17T06 Me +d −16.66
2009-01-18T03 Ve xd +345.76
2009-01-20T03 Me c +300.73
2009-01-20T12 Me V +300.26
2009-01-21T11 Me p 0.6625
2009-01-22T02 Lu d −27.08
2009-01-22T10 Lu V +266.06
2009-01-22T12 Lu a 0.002715
2009-01-22T14 Ju a 6.091
2009-01-23T17 Ju c +304.38
2009-01-24T17 Ju v +304.61
2009-01-25T19 Lu c +306.48
2009-01-26T01 Lu xa +309.26
2009-01-26T01
** 
B +96.08
2009-01-31T19 Me Pg +291.74
2009-02-05T02 Lu +d +27.08
2009-02-07T07 Lu p 0.002416
2009-02-07T08 Lu v +114.92
2009-02-08T07 Lu xd +129.28
2009-02-08T22
** 
S +146.07
2009-02-09T02 Lu o +141.01
2009-02-11T06 Me d −19.98
2009-02-12T00 Ne c +323.94
2009-02-12T05 Ne v +323.95
2009-02-12T14 Ne a 31.02
2009-02-13T10 Me e −26.09
2009-02-15T18 Me xa +301.72
2009-02-18T09 Lu d −27.06
2009-02-19T04 Lu V +271.45
2009-02-19T05 Lu a 0.002708
2009-02-22T08 Lu xa +309.21
2009-02-23T21
** 
B +97.32
2009-02-24T13 Lu c +336.58
2009-02-28T05
** 
s +127.39
2009-03-04T09 Lu +d +26.99
2009-03-06T05 Ve Rg +15.45
2009-03-07T02 Lu p 0.002453
2009-03-07T08 Lu v +124.48
2009-03-07T16 Lu xd +128.81
2009-03-08T03 Sa V +168.39
2009-03-08T05 Sa p 8.394
2009-03-08T07 Sa o +168.37
2009-03-09T09
** 
S +143.64
2009-03-10T14 Lu o +170.68
2009-03-12T12 Ve +d +13.00
2009-03-12T13 Ur c +352.61
2009-03-12T14 Ur v +352.61
2009-03-13T12 Ur a 21.09
2009-03-17T17 Lu d −26.90
2009-03-18T22 Ma v +333.37
2009-03-19T01 Lu a 0.002703
2009-03-19T03 Lu V +279.11
2009-03-21T14 Lu xa +308.02
2009-03-24T07
** 
B +94.49
2009-03-24T17
** 
b +124.88
2009-03-25T11 Me a 1.354
2009-03-26T04 Lu c +125.65
2009-03-27T00 Ve p 0.2815
2009-03-27T03 Ve V +7.35
2009-03-27T07 Ve c +7.26
2009-03-31T00 Me o +11.29
2009-03-31T12 Lu v +80.37
2009-03-31T14 Lu +d +26.78
2009-04-01T14 Lu p 0.002473
2009-04-03T19 Lu xd +126.92
2009-04-04T11 Me v +20.48
2009-04-06T10 Me xd +24.55
2009-04-07T03
** 
S +145.61
2009-04-09T03 Lu o +199.89
2009-04-14T01 Lu d −26.66
2009-04-15T21 Lu a 0.002702
2009-04-16T03 Lu V +286.76
2009-04-17T07 Ve Pg +359.20
2009-04-17T17 Lu xa +305.46
2009-04-21T09
** 
B +104.50
2009-04-24T15 Lu c +35.07
2009-04-25T18 Me e +20.23
2009-04-27T05 Lu v +72.56
2009-04-27T18 Lu p 0.002447
2009-04-27T20 Lu +d +26.57
2009-04-29T18 Ve d +2.26
2009-04-30T19 Lu xd +124.05
2009-04-30T21
** 
s +137.51
2009-05-02T02 Me +d +22.82
2009-05-05T03
** 
S +156.70
2009-05-06T17 Me Rg +61.74
2009-05-08T16 Lu o +228.70
2009-05-09T17 Ve xa +7.38
2009-05-11T08 Lu d −26.49
2009-05-12T15 Sa +d +7.95
2009-05-13T14 Lu a 0.002707
2009-05-14T00 Lu V +293.28
2009-05-14T17 Me xa +59.39
2009-05-14T19 Lu xa +302.55
2009-05-16T12 Sa Pg +164.91
2009-05-17T21 Me c +57.60
2009-05-18T06 Me V +57.40
2009-05-19T08 Me p 0.5510
2009-05-20T02
** 
B +106.93
2009-05-24T00 Lu c +63.47
2009-05-25T04 Lu +d +26.45
2009-05-25T08 Lu v +83.21
2009-05-25T15 Lu p 0.002414
2009-05-26T11 Ne +d −13.06
2009-05-27T22 Lu xd +121.57
2009-05-28T11 Ne Rg +326.47
2009-05-30T13 Me Pg +52.86
2009-06-02T04
** 
S +156.47
2009-06-02T08 Me d +14.80
2009-06-05T02 Ve e −45.81
2009-06-05T12
** 
b +128.51
2009-06-07T06 Lu o +257.14
2009-06-07T14 Lu d −26.43
2009-06-10T03 Lu a 0.002713
2009-06-10T15 Lu V +297.33
2009-06-10T22 Lu xa +300.70
2009-06-11T00 Ju +d −13.31
2009-06-13T05 Me e −23.20
2009-06-14T19 Ju Rg +327.01
2009-06-16T15
** 
B +114.37
2009-06-21T14 Lu +d +26.44
2009-06-22T07 Lu c +91.50
2009-06-22T18 Lu v +98.48
2009-06-22T22 Lu p 0.002393
2009-06-24T05 Lu xd +120.34
2009-06-28T22 Ur +d −2.05
2009-06-30T16 Ur Rg +356.62
2009-07-01T09
** 
S +177.91
2009-07-03T09 Me xd +90.20
2009-07-04T19 Lu d −26.46
2009-07-06T21 Lu o +285.39
2009-07-07T09 Lu a 0.002715
2009-07-07T16 Lu V +294.57
2009-07-07T22 Me +d +23.88
2009-07-08T03 Lu xa +300.15
2009-07-11T07 Me v +106.89
2009-07-14T00 Me o +112.67
2009-07-14T17
** 
B +143.19
2009-07-15T23 Me a 1.336
2009-07-19T00 Lu +d +26.48
2009-07-21T07 Lu v +115.13
2009-07-21T08 Lu p 0.002389
2009-07-21T14 Lu c +119.45
2009-07-21T15 Lu xd +120.22
2009-07-30T08
** 
S +238.49
2009-08-01T01 Lu d −26.47
2009-08-03T08 Lu V +287.75
2009-08-03T13 Lu a 0.002714
2009-08-04T09 Lu xa +300.25
2009-08-05T12 Lu o +313.72
2009-08-05T20 Ve +d +21.94
2009-08-10T16 Me xa +162.65
2009-08-12T15
** 
B +183.83
2009-08-14T05 Ju o +322.06
2009-08-14T13 Ju V +322.02
2009-08-14T15 Ju p 4.028
2009-08-15T09 Lu +d +26.44
2009-08-16T02
** 
s +148.24
2009-08-16T19 Ne p 29.02
2009-08-17T08 Ne o +325.07
2009-08-17T12 Ne V +325.06
2009-08-18T02 Lu xd +120.07
2009-08-18T16 Lu p 0.002404
2009-08-18T20 Lu v +131.77
2009-08-19T21 Ma xd +86.57
2009-08-19T22 Lu c +147.55
2009-08-23T21 Me e +27.28
2009-08-28T08 Lu d −26.39
2009-08-28T13
** 
S +281.11
2009-08-30T16 Lu V +288.76
2009-08-30T20 Ve xd +125.59
2009-08-30T22 Ma +d +23.57
2009-08-30T23 Lu a 0.002709
2009-08-31T15 Lu xa +299.78
2009-09-04T04 Lu o +342.26
2009-09-06T16 Me Rg +186.22
2009-09-08T00 Me d −6.22
2009-09-11T16 Lu +d +26.29
2009-09-14T08 Lu xd +118.94
2009-09-15T19 Lu p 0.002434
2009-09-16T00 Ur p 19.09
2009-09-16T05 Lu v +145.85
2009-09-16T21 Ur o +354.63
2009-09-16T22 Ur V +354.63
2009-09-17T06 Sa c +175.00
2009-09-17T08 Sa v +175.01
2009-09-17T09 Sa a 10.45
2009-09-17T12 Me p 0.6426
2009-09-17T14
** 
B +206.40
2009-09-18T06 Lu c +176.01
2009-09-19T05 Me V +178.30
2009-09-19T22 Me c +177.58
2009-09-24T16 Lu d −26.19
2009-09-27T11 Lu V +294.20
2009-09-27T15 Lu a 0.002703
2009-09-27T18 Lu xa +297.94
2009-09-29T01 Me Pg +171.61
2009-09-29T08 Me xd +171.62
2009-10-02T06 Me +d +3.69
2009-10-03T03
** 
S +306.48
2009-10-03T18 Lu o +11.18
2009-10-05T11 Me e −17.89
2009-10-08T21 Lu +d +26.05
2009-10-11T01 Ju d −16.70
2009-10-11T11 Lu xd +116.47
2009-10-12T15 Ju Pg +317.16
2009-10-13T00 Lu p 0.002467
2009-10-13T19 Lu v +150.06
2009-10-17T17 Lu c +204.98
2009-10-20T19
** 
B +180.48
2009-10-20T23
** 
b +125.14
2009-10-21T14 Me v +199.34
2009-10-22T00 Lu d −25.94
2009-10-24T20 Lu xa +294.96
2009-10-25T10 Lu V +301.50
2009-10-25T11 Lu a 0.002702
2009-11-02T07 Lu o +40.50
2009-11-03T20 Ne d −14.02
2009-11-03T21
** 
S +241.05
2009-11-04T03 Ne Pg +323.69
2009-11-05T00 Me o +223.32
2009-11-05T03 Lu +d +25.85
2009-11-06T03 Lu v +94.81
2009-11-06T15 Me xa +225.99
2009-11-06T19 Lu p 0.002466
2009-11-07T11 Lu xd +113.52
2009-11-09T22 Me a 1.445
2009-11-16T07 Lu c +234.58
2009-11-18T08 Lu d −25.79
2009-11-19T13
** 
B +152.17
2009-11-20T23 Lu xa +292.30
2009-11-22T07 Lu a 0.002705
2009-11-22T10 Lu V +309.29
2009-11-29T10 Ur d −3.60
2009-12-01T06 Ur Pg +352.70
2009-12-01T19 Lu o +70.25
2009-12-02T11 Lu +d +25.77
2009-12-03T11
** 
S +204.09
2009-12-03T19 Lu v +99.69
2009-12-04T02 Lu p 0.002430
2009-12-04T15 Lu xd +111.61
2009-12-06T00 Me d −25.77
2009-12-10T03 Ma d +17.82
2009-12-15T14 Lu d −25.77
2009-12-16T00 Lu c +264.66
2009-12-18T04 Lu xa +291.10
2009-12-18T08 Me e +20.22
2009-12-18T12
** 
B +138.65
2009-12-18T18 Ve v +261.83
2009-12-20T01 Ma Rg +139.69
2009-12-20T02 Lu a 0.002712
2009-12-20T06 Lu V +315.81
2009-12-20T09 Ve xa +263.90
2009-12-26T02 Me Rg +291.79
2009-12-26T07 Me xd +291.77
2009-12-28T12 Ve d −23.70
2009-12-29T21 Lu +d +25.78
2009-12-31T07 Lu o +100.25



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