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

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

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
1999-01-01T10 Lu +d +19.57
1999-01-01T14 Lu o  +101.27
1999-01-03T00
**
S  +152.20
1999-01-04T14 Lu xa +142.64
1999-01-05T01 Me xa +267.77
1999-01-10T15 Lu V  +217.52
1999-01-10T23 Lu a 0.002706
1999-01-12T14 Me −d −24.00
1999-01-15T17 Lu −d −19.56
1999-01-17T03 Lu c  +297.09
1999-01-18T21
**
B  +96.14
1999-01-19T01 Lu xd +322.17
1999-01-21T13 Ne v  +301.85
1999-01-21T20 Ne c  +301.86
1999-01-22T00 Ne a  31.12
1999-01-26T08 Lu p 0.002468
1999-01-26T12 Lu v  +66.21
1999-01-27T02 Me a  1.418
1999-01-28T20 Lu +d +19.54
1999-01-31T04 Lu o  +131.35
1999-01-31T22
**
S  +140.57
1999-01-31T23 Lu xa +142.07
1999-02-01T13 Ur v  +312.77
1999-02-01T14 Ur c  +312.77
1999-02-02T11 Ur a  20.88
1999-02-04T00 Me o  +315.43
1999-02-07T20 Lu V  +227.47
1999-02-07T20 Lu a 0.002703
1999-02-12T02 Lu −d −19.52
1999-02-14T14 Me v  +334.50
1999-02-15T09 Lu xd +322.14
1999-02-15T18 Lu c  +327.16
1999-02-16T00
**
B  +92.99
1999-02-20T02 Lu v  +28.34
1999-02-20T03 Lu p 0.002464
1999-02-23T17 Me xd +350.70
1999-02-25T03 Lu +d +19.53
1999-02-26T10
**
b  +112.38
1999-02-28T07 Lu xa +142.14
1999-03-01T19 Lu o  +161.24
1999-03-02T01
**
S  +145.45
1999-03-02T20 Me e  +18.09
1999-03-07T16 Lu a 0.002706
1999-03-07T23 Lu V  +236.91
1999-03-09T21 Me Rg +4.06
1999-03-11T11 Lu −d −19.58
1999-03-11T17 Me +d +4.60
1999-03-14T19 Lu xd +321.89
1999-03-16T06
**
B  +102.21
1999-03-16T23 Ve xd +28.87
1999-03-17T06 Lu c  +356.72
1999-03-18T01 Ma Rg +222.21
1999-03-19T07 Me c  +358.74
1999-03-19T12 Lu v  +29.46
1999-03-19T12 Lu p 0.002428
1999-03-20T00 Ma −d −13.46
1999-03-20T03 Me V  +357.95
1999-03-22T15 Me p  0.6032
1999-03-24T08 Lu +d +19.65
1999-03-27T12 Lu xa +141.41
1999-03-29T21
**
S  +156.45
1999-03-30T14 Ju v  +10.81
1999-03-31T10 Lu o  +190.79
1999-03-31T18 Ju c  +11.09
1999-04-01T21 Me Pg +350.87
1999-04-02T01 Ju a  5.950
1999-04-03T00 Me xa +350.95
1999-04-04T08 Lu a 0.002711
1999-04-04T22 Lu V  +244.58
1999-04-07T08 Me −d −3.97
1999-04-07T19 Lu −d −19.77
1999-04-11T01 Lu xd +320.23
1999-04-12T19
**
B  +115.91
1999-04-15T16 Lu c  +25.78
1999-04-16T00 Me e  −27.49
1999-04-16T17 Lu v  +41.39
1999-04-16T17 Lu p 0.002399
1999-04-20T15 Lu +d +19.87
1999-04-23T13 Lu xa +139.21
1999-04-24T05 Ma o  +214.10
1999-04-26T10 Ma V  +213.28
1999-04-26T15 Sa v  +36.72
1999-04-26T23 Sa c  +36.76
1999-04-27T00 Sa a  10.25
1999-04-27T08
**
S  +177.75
1999-04-30T02 Lu o  +219.86
1999-05-01T05 Ma p  0.5785
1999-05-01T11
**
s  +130.79
1999-05-01T17 Lu a 0.002716
1999-05-02T10 Lu V  +247.27
1999-05-05T02 Lu −d −20.01
1999-05-06T03 Ne +d −18.89
1999-05-06T08 Ne Rg +304.37
1999-05-08T04 Lu xd +317.39
1999-05-10T12 Ve +d +25.96
1999-05-11T07
**
B  +136.85
1999-05-15T00 Lu c  +54.23
1999-05-15T01 Lu v  +55.31
1999-05-15T03 Lu p 0.002387
1999-05-18T00 Lu +d +20.08
1999-05-18T20 Ur +d −16.45
1999-05-20T15 Lu xa +136.27
1999-05-21T02
**
b  +129.86
1999-05-21T07 Ur Rg +316.80
1999-05-22T16 Me xd +58.50
1999-05-24T08 Me a  1.322
1999-05-24T23 Me o  +63.54
1999-05-25T17 Ma xa +205.00
1999-05-26T04 Me v  +66.16
1999-05-26T18
**
S  +216.73
1999-05-27T07 Ma +d −9.67
1999-05-28T19 Lu V  +237.15
1999-05-28T20 Lu a 0.002717
1999-05-29T18 Lu o  +248.43
1999-06-01T09 Lu −d −20.17
1999-06-03T18 Ma Pg +204.45
1999-06-04T06 Lu xd +314.67
1999-06-07T20 Me +d +25.42
1999-06-09T01
**
B  +169.50
1999-06-11T05 Ve e  +45.34
1999-06-12T10 Lu v  +69.25
1999-06-12T12 Lu p 0.002394
1999-06-13T07 Lu c  +82.36
1999-06-14T11 Lu +d +20.20
1999-06-16T19 Lu xa +133.95
1999-06-24T04
**
S  +327.40
1999-06-24T21 Lu V  +234.68
1999-06-25T03 Lu a 0.002713
1999-06-28T09 Lu o  +276.76
1999-06-28T11 Me e  +25.54
1999-06-28T16 Lu −d −20.22
1999-06-29T23 Me xa +123.74
1999-07-01T08 Lu xd +313.17
1999-07-06T12 Ve xa +146.65
1999-07-07T11
**
B  +200.87
1999-07-10T15 Lu v  +81.49
1999-07-10T17 Lu p 0.002418
1999-07-11T22 Lu +d +20.21
1999-07-12T11 Me Rg +129.49
1999-07-12T14 Lu c  +110.29
1999-07-14T04 Lu xa +132.99
1999-07-20T08 Me −d +14.09
1999-07-20T17
**
S  +280.64
1999-07-22T14 Lu V  +239.95
1999-07-22T18 Lu a 0.002707
1999-07-22T23 Me p  0.5817
1999-07-25T08 Me V  +123.79
1999-07-25T15 Ne p  29.11
1999-07-25T18 Ne V  +302.98
1999-07-25T21 Ne o  +302.97
1999-07-25T23 Lu −d −20.19
1999-07-26T03 Me c  +123.23
1999-07-27T23 Lu o  +304.94
1999-07-28T14 Lu xd +312.92
1999-07-29T13 Ve Rg +155.13
1999-08-03T14
**
B  +198.99
1999-08-05T15 Me Pg +118.59
1999-08-06T10 Ur p  18.90
1999-08-07T06 Ur o  +314.82
1999-08-07T09 Lu v  +87.11
1999-08-07T10 Ur V  +314.81
1999-08-07T10 Lu p 0.002451
1999-08-08T07 Lu +d +20.19
1999-08-10T13 Lu xa +132.99
1999-08-10T23 Lu c  +138.38
1999-08-11T17 Ve −d +4.31
1999-08-14T05 Me e  −18.77
1999-08-15T09 Me +d +18.50
1999-08-16T00
**
S  +292.31
1999-08-18T15 Me xd +127.98
1999-08-19T11 Lu a 0.002702
1999-08-19T13 Lu V  +247.50
1999-08-19T23 Ve c  +147.04
1999-08-20T05 Ve V  +146.90
1999-08-20T07 Ve p  0.2878
1999-08-21T06 Ju +d +11.85
1999-08-21T23 Sa +d +14.61
1999-08-22T07 Lu −d −20.20
1999-08-24T14 Ju Rg +34.99
1999-08-24T22 Lu xd +312.96
1999-08-26T11 Lu o  +333.30
1999-08-28T16
**
B  +205.21
1999-08-29T12 Sa Rg +47.18
1999-09-01T08 Me v  +152.43
1999-09-01T15 Lu v  +59.01
1999-09-02T06 Lu p 0.002472
1999-09-04T14 Lu +d +20.24
1999-09-06T21 Lu xa +132.75
1999-09-07T23 Me o  +165.30
1999-09-08T15
**
S  +279.70
1999-09-09T10 Lu c  +166.81
1999-09-10T12 Ve Pg +138.79
1999-09-15T03 Me a  1.393
1999-09-16T06 Lu a 0.002703
1999-09-16T14 Lu V  +255.80
1999-09-18T15 Lu −d −20.32
1999-09-21T05 Lu xd +312.11
1999-09-22T10
**
B  +189.07
1999-09-24T22 Lu o  +200.20
1999-09-25T12 Ve +d +9.76
1999-09-25T22 Me xa +196.62
1999-09-27T21 Lu v  +44.60
1999-09-28T05 Lu p 0.002448
1999-10-01T19 Lu +d +20.41
1999-10-03T08
**
S  +265.34
1999-10-04T01 Lu xa +131.31
1999-10-08T23 Lu c  +195.73
1999-10-13T09 Ne Pg +301.59
1999-10-14T01 Lu a 0.002709
1999-10-14T15 Lu V  +264.20
1999-10-15T02
**
s  +290.19
1999-10-15T11 Ma −d −25.21
1999-10-15T23 Ne −d −19.55
1999-10-16T00 Lu −d −20.55
1999-10-18T10 Lu xd +309.80
1999-10-19T04
**
B  +156.70
1999-10-20T13 Ur −d −17.61
1999-10-22T02 Ju p  3.963
1999-10-22T14 Ur Pg +312.87
1999-10-22T23 Ju V  +29.97
1999-10-23T06 Ju o  +29.93
1999-10-24T07 Me e  +24.11
1999-10-24T09 Lu o  +30.99
1999-10-25T20 Lu v  +52.81
1999-10-26T01 Lu p 0.002413
1999-10-27T16 Ve xd +167.83
1999-10-29T01 Lu +d +20.65
1999-10-30T09 Ve e  −46.49
1999-10-30T13
**
S  +206.39
1999-10-31T01 Lu xa +128.55
1999-11-01T22 Me −d −23.18
1999-11-04T14 Me Rg +241.73
1999-11-05T23 Sa p  8.206
1999-11-06T01 Sa o  +43.70
1999-11-06T03 Sa V  +43.70
1999-11-07T15 Lu c  +225.30
1999-11-10T16 Lu a 0.002715
1999-11-11T12 Lu V  +271.30
1999-11-12T07 Lu −d −20.79
1999-11-14T10
**
B  +139.57
1999-11-14T12 Lu xd +306.69
1999-11-14T15 Me xd +234.16
1999-11-14T16 Me p  0.6761
1999-11-15T05 Me V  +233.37
1999-11-15T09 Me c  +233.10
1999-11-22T19 Lu o  +60.57
1999-11-23T05 Lu v  +67.08
1999-11-23T10 Lu p 0.002388
1999-11-24T16 Me Pg +225.63
1999-11-25T11 Lu +d +20.87
1999-11-25T17 Me +d −14.16
1999-11-26T21
**
S  +192.19
1999-11-27T03 Lu xa +125.61
1999-12-02T15 Me e  −20.24
1999-12-07T10 Lu c  +255.40
1999-12-07T23 Lu a 0.002718
1999-12-08T17 Lu V  +270.55
1999-12-09T14 Lu −d −20.94
1999-12-11T13 Lu xd +304.39
1999-12-13T08
**
B  +120.77
1999-12-16T07 Ju −d +8.44
1999-12-20T02 Ju Pg +25.01
1999-12-21T19 Lu v  +83.84
1999-12-21T22 Lu p 0.002384
1999-12-22T05 Lu o  +90.41
1999-12-22T22 Me xa +258.00
1999-12-22T22 Lu +d +20.95
1999-12-24T10 Lu xa +123.95
1999-12-24T18
**
S  +157.26

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Last updated: 2020-10-14