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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
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
12P/Pons-Brooks
visibility

12P/Pons-Brooks   radio_button_checked

Magnitude: 5.2 (Observed - COBS) trending_up
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-03-18
RA: 01h 10m 39s   Decl: +29° 38’ 47”
in Pisces
C/2021 S3 (PANSTARRS)
stars

C/2021 S3 (PANSTARRS)   radio_button_checked

Magnitude: 10.7 (Observed - COBS) trending_down
Coma Diameter: 1.9'
Tail Length: 5.7'
Observation Date: 2024-03-18
RA: 18h 59m 05s   Decl: +10° 44’ 50”
in Aquila
13P/Olbers

13P/Olbers   radio_button_checked

Magnitude: 11.5 (Observed - COBS) trending_up
Coma Diameter: 1.0'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 03h 23m 29s   Decl: +10° 38’ 26”
in Aries
62P/Tsuchinshan

62P/Tsuchinshan   radio_button_checked

Magnitude: 11.8 (Observed - COBS) trending_down
Coma Diameter: 3.2'
Tail Length: 5.0'
Observation Date: 2024-03-18
RA: 12h 20m 54s   Decl: +10° 20’ 11”
in Virgo
C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)   radio_button_checked

Magnitude: 12.3 (Observed - COBS) trending_up
Coma Diameter: 1.2'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 14h 50m 48s   Decl: -06° 11’ 41”
in Libra
29P/Schwassmann-Wachmann

29P/Schwassmann-Wachmann   radio_button_checked

Magnitude: 13.1 (Observed - COBS) trending_down
Coma Diameter: 3.4'
Tail Length: n/a
Observation Date: 2024-03-15
RA: 08h 04m 20s   Decl: +21° 24’ 44”
in Cancer
C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)   radio_button_checked

Magnitude: 13.6 (Observed - COBS) trending_flat
Coma Diameter: 1.8'
Tail Length: 3.4'
Observation Date: 2024-03-14
RA: 07h 10m 16s   Decl: +28° 42’ 49”
in Gemini
144P/Kushida

144P/Kushida   radio_button_checked

Magnitude: 13.7 (Observed - COBS) trending_down
Coma Diameter: 1.3'
Tail Length: n/a
Observation Date: 2024-03-13
RA: 06h 31m 23s   Decl: +17° 32’ 21”
in Gemini
C/2021 G2 (Atlas)

C/2021 G2 (Atlas)   radio_button_checked

Magnitude: 14.3 (Observed - COBS) trending_flat
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 12h 04m 24s   Decl: -37° 12’ 29”
in Centaurus
C/2019 U5 (PANSTARRS)

C/2019 U5 (PANSTARRS)   radio_button_checked

Magnitude: 14.5 (Observed - COBS) trending_down
Coma Diameter: 0.5'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 07h 44m 22s   Decl: -41° 37’ 44”
in Puppis
C/2022 L2 (ATLAS)

C/2022 L2 (ATLAS)   radio_button_checked

Magnitude: 14.5 (Observed - COBS) trending_up
Coma Diameter: 0.5'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 13h 49m 33s   Decl: -37° 25’ 34”
in Centaurus
C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)   radio_button_checked

Magnitude: 14.6 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 05h 07m 41s   Decl: +08° 06’ 25”
in Orion
226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski   radio_button_checked

Magnitude: 15.1 (Observed - COBS) trending_down
Coma Diameter: 2.0'
Tail Length: n/a
Observation Date: 2024-03-09
RA: 02h 41m 33s   Decl: +27° 55’ 17”
in Aries
C/2020 K1 (PANSTARRS)

C/2020 K1 (PANSTARRS)   radio_button_checked

Magnitude: 15.1 (Observed - COBS) trending_down
Coma Diameter: 0.8'
Tail Length: 1.1'
Observation Date: 2024-03-18
RA: 04h 26m 03s   Decl: -56° 16’ 00”
in Dorado
32P/Comas Sola

32P/Comas Sola   radio_button_checked

Magnitude: 15.4 (Observed - COBS) trending_flat
Coma Diameter: 0.4'
Tail Length: 1.0'
Observation Date: 2024-03-13
RA: 04h 19m 34s   Decl: +27° 36’ 01”
in Taurus
207P/NEAT

207P/NEAT   radio_button_checked

Magnitude: 15.9 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2024-03-18
RA: 08h 27m 23s   Decl: -03° 37’ 56”
in Hydra
65P/Gunn

65P/Gunn   radio_button_checked

Magnitude: 17.3 (Observed - COBS) trending_flat
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2024-03-14
RA: 13h 07m 48s   Decl: +03° 31’ 36”
in Virgo
150P/LONEOS

150P/LONEOS   radio_button_checked

Magnitude: 17.4 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2024-03-13
RA: 08h 39m 38s   Decl: -16° 32’ 43”
in Hydra
C/2021 T4 (Lemmon)

C/2021 T4 (Lemmon)   radio_button_checked

Magnitude: 17.4 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2024-03-14
RA: 13h 50m 45s   Decl: +14° 36’ 59”
in Bootes
103P/Hartley

103P/Hartley   radio_button_checked

Magnitude: 17.7 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2024-03-14
RA: 08h 06m 27s   Decl: +00° 20’ 32”
in Canis Minoris
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