C/2021 A1 (Leonard) live position and data

This page shows Comet Leonard (C/2021 A1) 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 below 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 Leonard (C/2021 A1) (less than 1.5 degrees):

Type	Name	Magnitude	Ar	Dec
Star	HIP 59205	0	12h 08m 30s	+63° 02’ 24”
Star	HIP 58989	6.0144	12h 05m 39s	+62° 55’ 59”
Star	HIP 58259	6.132	11h 56m 53s	+61° 32’ 57”
Star	HIP 58458	7.564	11h 59m 15s	+61° 20’ 03”
Star	HIP 58389	6.6368	11h 58m 20s	+61° 27’ 52”
Star	HIP 58828	7.6658	12h 03m 58s	+61° 24’ 12”
Star	HIP 60111	7.844	12h 19m 40s	+62° 21’ 32”
Star	HIP 58296	8.2228	11h 57m 17s	+62° 13’ 51”
Galaxy	NGC 4036	11.5	12h 01m 27s	+61° 53’ 40”
Galaxy	NGC 4041	11.9	12h 02m 11s	+62° 08’ 21”

Additional resources

Additional Resources about Comet Leonard (C/2021 A1)

• 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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