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 79085	0	16h 08m 35s	-20° 48’ 26”
Star	HIP 79524	6.6358	16h 13m 40s	-21° 23’ 59”
Star	HIP 78843	7.285	16h 05m 40s	-20° 26’ 57”
Star	HIP 78977	8.6586	16h 07m 17s	-22° 03’ 36”
Star	HIP 78708	8.6064	16h 04m 03s	-21° 55’ 38”
Star	HIP 79244	7.0312	16h 10m 19s	-22° 09’ 25”
Star	HIP 78847	7.7758	16h 05m 43s	-21° 50’ 19”
Star	HIP 79293	8.7618	16h 10m 57s	-20° 23’ 56”
Star	HIP 79083	8.3476	16h 08m 35s	-20° 45’ 29”
Star	HIP 79369	8.911	16h 11m 55s	-21° 06’ 17”
Star	HIP 78933	3.949	16h 06m 48s	-20° 40’ 08”
Star	HIP 78937	7.8152	16h 06m 51s	-21° 51’ 49”
Star	HIP 79366	8.197	16h 11m 52s	-22° 32’ 41”
Star	HIP 78990	4.2372	16h 07m 24s	-20° 52’ 07”
Star	HIP 79020	7.9064	16h 07m 44s	-21° 24’ 43”
Star	HIP 78769	8.9316	16h 04m 51s	-20° 18’ 25”

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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