Object: C/2023 H5 (Lemmon) (open sky map)

RA 10h 37m 39s Dec +65° 18’ 40” Appar J2000

Mag: 16.9 (Observed: COBS) Const: Ursa Major

Sun Dist: 646487202.49791 km [ km/s]
Earth Dist: 675847602.55458 km [ km/s]
Perihelion: 30 Jun 2025 04:12 UTC []

RA:
Dec:

C/2023 H5 (Lemmon) Live Position Tracker

This page shows Comet C/2023 H5 (Lemmon) 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 C/2023 H5 (Lemmon) (less than 1.5 degrees):

Type	Name	Magnitude	Ar	Dec
Star	HIP 51223	7.7986	10h 27m 44s	+66° 40’ 46”
Star	HIP 52597	7.7918	10h 45m 18s	+65° 02’ 52”
Star	HIP 51517	7.2072	10h 31m 19s	+66° 18’ 43”
Star	HIP 52587	8.0102	10h 45m 10s	+64° 53’ 53”
Star	HIP 51638	8.1486	10h 32m 58s	+65° 27’ 10”
Star	HIP 50841	7.9008	10h 22m 51s	+64° 57’ 29”
Star	HIP 52836	8.5718	10h 48m 11s	+66° 13’ 04”
Star	HIP 51511	8.7876	10h 31m 12s	+64° 17’ 39”
Star	HIP 52410	8.3112	10h 42m 50s	+66° 00’ 55”
Star	HIP 51448	6.0658	10h 30m 26s	+64° 15’ 28”
Star	HIP 51952	8.9948	10h 36m 46s	+64° 20’ 37”
Star	HIP 51721	8.5978	10h 34m 05s	+65° 00’ 19”
Star	HIP 52877	6.4054	10h 48m 49s	+65° 07’ 56”
Star	HIP 52794	6.8478	10h 47m 36s	+65° 37’ 00”
Star	HIP 50933	4.9372	10h 24m 07s	+65° 33’ 59”
Star	HIP 51401	6.197	10h 29m 54s	+65° 37’ 34”
Star	HIP 51002	7.4704	10h 25m 06s	+65° 54’ 33”
Star	HIP 52050	7.873	10h 38m 09s	+64° 58’ 13”
Star	HIP 52805	7.6256	10h 47m 43s	+65° 27’ 36”
Star	HIP 52179	8.7048	10h 39m 35s	+65° 31’ 37”
Star	HIP 52353	4.9808	10h 41m 56s	+65° 42’ 59”
Galaxy	NGC 3259	13.0	10h 32m 35s	+65° 02’ 29”
Galaxy	NGC 3266	13.5	10h 33m 17s	+64° 44’ 57”

Additional resources

Astronomy databases

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

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
The Hipparcos Star Catalogue, containing more than 100.000 bright stars
The PGC 2003 Catalogue, containing information about 1 million galaxies
The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies

Please see the acknowledgements section.

RA: ()
Dec: ()

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C/2023 H5 (Lemmon) Live Position Tracker

Current close conjunctions

Additional resources

Astronomy databases

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