21P/Giacobini-Zinner live position and data

This page shows Comet 21P/Giacobini-Zinner location and other relevant astronomical data in real time. The celestial coordinates, magnitude, distances and speed are updated in real time and are computed using high quality data sets provided by the JPL Horizons ephemeris service (see acknowledgements for details). The sky map shown in the background represents a rectangular portion of the sky 60x40 arcminutes wide. By comparison the diameter of the full Moon is about 30 arcmins, so the full horizontal extent of the map is approximately 2 full Moons wide. Depending on the device you are using, the map can be dragged horizondally or vertically using the mouse or touchscreen. The deep sky image in the background is provided by the Digitized Sky Survey (acknowledgements).

Current close conjunctions

List of bright objects (stars brighter than magnitude 9.0 and galaxies brighter than magmitude 14.0) close to Comet 21P/Giacobini-Zinner (less than 1.5 degrees):

Type	Name	Magnitude	Ar	Dec
Star	HIP 65211	8.8042	13h 21m 50s	+01° 23’ 43”
Star	HIP 65051	8.298	13h 20m 02s	+01° 36’ 35”
Star	HIP 65483	7.1422	13h 25m 16s	+00° 50’ 59”
Star	HIP 65405	7.3332	13h 24m 18s	+01° 23’ 59”
Star	HIP 64930	7.4338	13h 18m 28s	+01° 14’ 47”
Star	HIP 65238	7.8432	13h 22m 07s	-00° 04’ 04”
Star	HIP 65198	5.691	13h 21m 41s	+02° 05’ 14”
Star	HIP 64960	8.6092	13h 18m 54s	+00° 30’ 21”
Star	HIP 64799	7.418	13h 16m 51s	+01° 14’ 24”

Additional resources

• 15 Days Ephemerides
• Interactive Sky Map (Planetarium)
• Rise & Set Times
• Distance from Earth
• Light Curve
• Orbital Elements

Astronomy databases

This online sky chart is created using the following astronomy databases and services:

1. The Digitized Sky Survey, a photographic survey of the whole sky created using images from different telescopes, including the Oschin Schmidt Telescope on Palomar Mountain
2. The Hipparcos Star Catalogue, containing more than 100.000 bright stars
3. The PGC 2003 Catalogue, containing information about 1 million galaxies
4. The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies

Please see the acknowledgements section.

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