C/2021 A4 (NEOWISE) live position and data

This page shows Comet C/2021 A4 (NEOWISE) 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 C/2021 A4 (NEOWISE) (less than 1.5 degrees):

Type	Name	Magnitude	Ar	Dec
Star	HIP 20045	0	04h 17m 55s	-18° 30’ 25”
Star	HIP 20057	8.232	04h 18m 01s	-17° 03’ 49”
Star	HIP 19601	6.3066	04h 12m 00s	-17° 16’ 28”
Star	HIP 19820	6.8634	04h 15m 00s	-16° 10’ 50”
Star	HIP 20229	6.7954	04h 20m 09s	-16° 26’ 14”
Star	HIP 19728	8.5242	04h 13m 42s	-17° 28’ 22”
Star	HIP 19913	7.3656	04h 16m 18s	-17° 52’ 29”
Star	HIP 20260	8.0838	04h 20m 33s	-17° 44’ 23”
Star	HIP 19856	6.8652	04h 15m 26s	-16° 26’ 42”
Star	HIP 20032	8.187	04h 17m 46s	-16° 43’ 58”
Star	HIP 19984	8.851	04h 17m 09s	-17° 26’ 56”
Star	HIP 19752	7.03	04h 14m 03s	-15° 59’ 35”
Star	HIP 20134	7.374	04h 19m 00s	-17° 51’ 03”
Star	HIP 20114	7.3946	04h 18m 46s	-17° 42’ 33”
Star	HIP 20210	7.3724	04h 19m 53s	-17° 27’ 50”
Star	HIP 19839	8.3496	04h 15m 12s	-16° 11’ 47”
Star	HIP 20269	6.8998	04h 20m 41s	-16° 49’ 48”

Additional resources

Additional Resources about Comet C/2021 A4 (NEOWISE)

• 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.

Close