* Astronomy

Blobrana · L

RE: Comet 21P/Giacobini-Zinner

Blobrana · L

Comet Giacobini-Zinner was discovered on December 20, 1900.

Blobrana · L

The magnitude 11.0 comet 21P/Giacobini-Zinner will pass 0.03° from the magnitude 12.1 galaxy NGC 450, in the constellation Cetus, at 22:00 UT, 12th March, 2012.

Blobrana · L

The magnitude 10.3 comet 21P/Giacobini-Zinner will pass 0.90° from the magnitude 12.5 galaxy NGC 7556 on the 14th February, 2012.

Blobrana · L

Comet 21P/Giacobini-Zinner is at Perihelion (1.030 AU) on the 11th February, 2012.

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Comet 21P/Giacobini-Zinner makes its closest approach to the Earth (1.850 AU) on the 10th Frebruary, 2012.

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Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2012 02 01    22 18 42.5 -04 06 19   1.8565  1.0418    24.4    23.0  10.6
2012 02 02    22 23 03.8 -04 03 10   1.8552  1.0398    24.3    23.0  10.6
2012 02 03    22 27 25.5 -03 59 54   1.8541  1.0380    24.3    23.0  10.6
2012 02 04    22 31 47.5 -03 56 31   1.8531  1.0364    24.2    23.0  10.6
2012 02 05    22 36 09.9 -03 53 03   1.8522  1.0350    24.2    23.0  10.6
2012 02 06    22 40 32.6 -03 49 28   1.8515  1.0337    24.1    23.0  10.6
2012 02 07    22 44 55.5 -03 45 47   1.8509  1.0327    24.1    23.0  10.5
2012 02 08    22 49 18.6 -03 42 00   1.8505  1.0319    24.1    23.0  10.5
2012 02 09    22 53 41.9 -03 38 07   1.8502  1.0312    24.1    23.0  10.5
2012 02 10    22 58 05.3 -03 34 09   1.8501  1.0308    24.1    23.0  10.5
2012 02 11    23 02 28.7 -03 30 05   1.8501  1.0305    24.0    23.0  10.5
2012 02 12    23 06 52.2 -03 25 55   1.8503  1.0305    24.0    23.0  10.5
2012 02 13    23 11 15.7 -03 21 40   1.8506  1.0306    24.0    23.0  10.5
2012 02 14    23 15 39.2 -03 17 21   1.8510  1.0310    24.0    23.0  10.5
2012 02 15    23 20 02.6 -03 12 56   1.8516  1.0315    24.1    23.0  10.5
2012 02 16    23 24 25.9 -03 08 26   1.8524  1.0323    24.1    23.0  10.5
2012 02 17    23 28 49.0 -03 03 52   1.8532  1.0332    24.1    23.0  10.6
2012 02 18    23 33 11.9 -02 59 13   1.8543  1.0343    24.1    23.0  10.6
2012 02 19    23 37 34.6 -02 54 30   1.8555  1.0357    24.1    23.0  10.6
2012 02 20    23 41 57.1 -02 49 42   1.8568  1.0372    24.2    23.0  10.6
2012 02 21    23 46 19.2 -02 44 51   1.8583  1.0389    24.2    23.0  10.6
2012 02 22    23 50 40.9 -02 39 56   1.8599  1.0408    24.3    23.0  10.6
2012 02 23    23 55 02.3 -02 34 57   1.8617  1.0429    24.3    23.0  10.6
2012 02 24    23 59 23.3 -02 29 55   1.8636  1.0451    24.4    23.0  10.6
2012 02 25    00 03 43.8 -02 24 50   1.8657  1.0476    24.4    23.0  10.7
2012 02 26    00 08 03.8 -02 19 41   1.8679  1.0502    24.5    23.0  10.7
2012 02 27    00 12 23.2 -02 14 30   1.8703  1.0531    24.5    23.0  10.7
2012 02 28    00 16 42.2 -02 09 16   1.8728  1.0561    24.6    23.0  10.7
2012 02 29    00 21 00.5 -02 04 00   1.8754  1.0592    24.7    23.0  10.7

Blobrana · L

Comet 21P/Giacobini-Zinner is a periodic comet in our solar system.
It was discovered by Michel Giacobini from (Nice, France), who observed the comet in the constellation of Aquarius on December 20, 1900. It was recovered two passages later by Ernst Zinner (from Bamberg, Germany) while observing variable stars near Beta Scuti on October 23, 1913.
During its apparitions, GiacobiniZinner can reach about the 8th magnitude, but in 1946 it underwent a series of outbursts that made it as bright as 5th magnitude. It is the parent body of the Giacobinids meteor shower (also known as the Draconids).
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Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase  Mag
2011 12 31    20 06 55.7 -04 38 34   1.9620  1.1913    28.3    23.0  11.6
2012 01 01    20 10 44.2 -04 39 45   1.9571  1.1845    28.1    23.0  11.6
2012 01 02    20 14 34.1 -04 40 47   1.9524  1.1779    28.0    23.0  11.5
2012 01 03    20 18 25.4 -04 41 41   1.9476  1.1714    27.8    23.1  11.5
2012 01 04    20 22 18.1 -04 42 26   1.9430  1.1650    27.6    23.1  11.4
2012 01 05    20 26 12.2 -04 43 02   1.9385  1.1587    27.5    23.1  11.4
2012 01 06    20 30 07.8 -04 43 29   1.9340  1.1525    27.3    23.1  11.4
2012 01 07    20 34 04.6 -04 43 48   1.9296  1.1464    27.2    23.1  11.3
2012 01 08    20 38 02.8 -04 43 58   1.9254  1.1405    27.0    23.1  11.3
2012 01 09    20 42 02.3 -04 43 59   1.9212  1.1347    26.9    23.1  11.2
2012 01 10    20 46 03.1 -04 43 52   1.9171  1.1290    26.7    23.1  11.2
2012 01 11    20 50 05.1 -04 43 36   1.9131  1.1234    26.6    23.1  11.2
2012 01 12    20 54 08.4 -04 43 11   1.9092  1.1180    26.4    23.1  11.1
2012 01 13    20 58 12.8 -04 42 38   1.9055  1.1127    26.3    23.1  11.1
2012 01 14    21 02 18.5 -04 41 56   1.9018  1.1075    26.2    23.1  11.1
2012 01 15    21 06 25.3 -04 41 06   1.8983  1.1025    26.0    23.1  11.0
2012 01 16    21 10 33.2 -04 40 08   1.8948  1.0976    25.9    23.0  11.0
2012 01 17    21 14 42.2 -04 39 01   1.8915  1.0929    25.8    23.0  11.0
2012 01 18    21 18 52.3 -04 37 45   1.8883  1.0884    25.7    23.0  10.9
2012 01 19    21 23 03.4 -04 36 21   1.8852  1.0839    25.5    23.0  10.9
2012 01 20    21 27 15.4 -04 34 49   1.8822  1.0797    25.4    23.0  10.9
2012 01 21    21 31 28.5 -04 33 09   1.8794  1.0756    25.3    23.0  10.8
2012 01 22    21 35 42.4 -04 31 21   1.8767  1.0716    25.2    23.0  10.8
2012 01 23    21 39 57.2 -04 29 25   1.8741  1.0679    25.1    23.0  10.8
2012 01 24    21 44 12.9 -04 27 21   1.8716  1.0643    25.0    23.0  10.8
2012 01 25    21 48 29.3 -04 25 09   1.8693  1.0608    24.9    23.0  10.7
2012 01 26    21 52 46.5 -04 22 50   1.8670  1.0576    24.8    23.0  10.7
2012 01 27    21 57 04.4 -04 20 23   1.8649  1.0545    24.7    23.0  10.7
2012 01 28    22 01 23.0 -04 17 49   1.8630  1.0516    24.7    23.0  10.7
2012 01 29    22 05 42.2 -04 15 07   1.8612  1.0488    24.6    23.0  10.7
2012 01 30    22 10 02.0 -04 12 19   1.8595  1.0463    24.5    23.0  10.6
2012 01 31    22 14 22.3 -04 09 23   1.8579  1.0439    24.4    23.0  10.6

Google earth file: Comet 21P/Giacobini-Zinner.kmz (18kb, kmz)

Blobrana · L

Comet Giacobini-Zinner (official designation: 21P/Giacobini-Zinner) is a periodic comet in our solar system.
It was discovered by Michel Giacobini from (Nice, France), who observed the comet in the constellation of Aquarius on December 20, 1900. It was recovered two passages later by Ernst Zinner (from Bamberg, Germany) while observing variable stars near Beta Scuti on October 23, 1913.
Read more