Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:54  
clear_day Transit: 12:49  
SunsetSet: 18:43 south
sunny DaytimeWhat's Visible Now

Bright Comets

This page provides a comprehensive list of the bright comets currently visible in the sky. This list is updated with new information several times per day. Comets for which there is data from recent observations reported in the Comet Observation database (COBS) are listed first, in order of decreasing brightness. When data from recent observations is not available, the magnitude provided by the JPL Horizons datasets is used as an estimation of the brightness.

Credits for comet observation data: COBS Comet Observation Database – CC BY-NA-SA 4.0

Visibility from selected location
visibility = visible to the naked eye
stars = binocular, brighter than 10th magnitude
radio_button_checked Current altitude ≥ 30°   radio_button_checked Current altitude < 30°   radio_button_checked Below the horizon
 From: Greenwich, United Kingdom edit_location_alt
C/2021 S3 (PANSTARRS)

C/2021 S3 (PANSTARRS)   radio_button_checked

Magnitude: 11.3 (Predicted - JPL) trending_up
RA: 09h 55m 56s   Decl: -31° 58’ 44”
in Antlia
C/2021 T4 (Lemmon)

C/2021 T4 (Lemmon)   radio_button_checked

Magnitude: 13.1 (Predicted - JPL) trending_down
RA: 14h 52m 35s   Decl: -13° 43’ 23”
in Libra
C/2022 L2 (ATLAS)

C/2022 L2 (ATLAS)   radio_button_checked

Magnitude: 14.5 (Predicted - JPL) trending_up
RA: 15h 07m 35s   Decl: -00° 11’ 54”
in Virgo
62P/Tsuchinshan

62P/Tsuchinshan   radio_button_checked

Magnitude: 14.9 (Predicted - JPL) trending_up
RA: 05h 55m 37s   Decl: +21° 28’ 03”
in Orion
C/2019 U5 (PANSTARRS)

C/2019 U5 (PANSTARRS)   radio_button_checked

Magnitude: 14.9 (Predicted - JPL) trending_flat
RA: 10h 42m 07s   Decl: -20° 33’ 51”
in Hydra
C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)   radio_button_checked

Magnitude: 15.3 (Predicted - JPL) trending_up
RA: 09h 37m 03s   Decl: +04° 10’ 25”
in Hydra
P/2010 H2 (Vales)

P/2010 H2 (Vales)   radio_button_checked

Magnitude: 15.7 (Predicted - JPL) trending_up
RA: 07h 51m 04s   Decl: +29° 01’ 15”
in Gemini
C/2022 E3 (ZTF)

C/2022 E3 (ZTF)   radio_button_checked

Magnitude: 15.7 (Predicted - JPL) trending_down
RA: 06h 35m 38s   Decl: -47° 37’ 50”
in Puppis
C/2021 G2 (Atlas)

C/2021 G2 (Atlas)   radio_button_checked

Magnitude: 15.8 (Predicted - JPL) trending_flat
RA: 10h 53m 04s   Decl: -29° 11’ 16”
in Hydra
117P/Helin-Roman-Alu

117P/Helin-Roman-Alu   radio_button_checked

Magnitude: 16.2 (Predicted - JPL) trending_down
RA: 00h 26m 31s   Decl: -07° 52’ 32”
in Cetus
C/2022 W3 (Leonard)

C/2022 W3 (Leonard)   radio_button_checked

Magnitude: 16.2 (Predicted - JPL) trending_down
RA: 18h 50m 07s   Decl: -24° 24’ 46”
in Sagittarius
144P/Kushida

144P/Kushida   radio_button_checked

Magnitude: 16.3 (Predicted - JPL) trending_up
RA: 02h 56m 58s   Decl: +21° 11’ 15”
in Aries
C/2019 L3 (ATLAS)

C/2019 L3 (ATLAS)   radio_button_checked

Magnitude: 16.3 (Predicted - JPL) trending_flat
RA: 10h 46m 02s   Decl: -36° 42’ 30”
in Antlia
185P/Petriew

185P/Petriew   radio_button_checked

Magnitude: 16.5 (Predicted - JPL) trending_down
RA: 09h 34m 29s   Decl: +04° 06’ 33”
in Hydra
C/2021 Y1 (ATLAS)

C/2021 Y1 (ATLAS)   radio_button_checked

Magnitude: 16.5 (Predicted - JPL) trending_down
RA: 12h 34m 35s   Decl: -49° 21’ 24”
in Centaurus
C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)   radio_button_checked

Magnitude: 16.6 (Predicted - JPL) trending_up
RA: 14h 13m 27s   Decl: -01° 42’ 40”
in Virgo
C/2022 S4 (Lemmon)

C/2022 S4 (Lemmon)   radio_button_checked

Magnitude: 16.6 (Predicted - JPL) trending_up
RA: 03h 22m 41s   Decl: -07° 08’ 56”
in Eridanus
C/2022 A3 (Lemmon-ATLAS)

C/2022 A3 (Lemmon-ATLAS)   radio_button_checked

Magnitude: 16.7 (Predicted - JPL) trending_up
RA: 09h 29m 06s   Decl: -33° 30’ 58”
in Antlia
226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski   radio_button_checked

Magnitude: 16.9 (Predicted - JPL) trending_up
RA: 02h 27m 45s   Decl: -59° 01’ 29”
in Horologium
199P/Shoemaker

199P/Shoemaker   radio_button_checked

Magnitude: 16.9 (Predicted - JPL) trending_down
RA: 18h 20m 31s   Decl: -33° 59’ 01”
in Sagittarius
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