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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: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
wb_twilight Nautical TwilightWhat'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: 4.4 (Observed - COBS) trending_down
Coma Diameter: 5.0'
Tail Length: n/a
Observation Date: 2024-04-24
RA: 03h 44m 25s   Decl: +06° 30’ 15”
in Taurus
13P/Olbers
stars

13P/Olbers   radio_button_checked

Magnitude: 9.8 (Observed - COBS) trending_up
Coma Diameter: 2.9'
Tail Length: n/a
Observation Date: 2024-04-17
RA: 04h 26m 40s   Decl: +24° 28’ 37”
in Taurus
C/2021 S3 (PANSTARRS)
stars

C/2021 S3 (PANSTARRS)   radio_button_checked

Magnitude: 11.0 (Observed - COBS) trending_down
Coma Diameter: 1.7'
Tail Length: 18.0'
Observation Date: 2024-04-18
RA: 20h 12m 17s   Decl: +39° 56’ 12”
in Cygnus
C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)   radio_button_checked

Magnitude: 11.0 (Observed - COBS) trending_up
Coma Diameter: 0.8'
Tail Length: 1.6'
Observation Date: 2024-04-24
RA: 13h 37m 24s   Decl: -01° 36’ 34”
in Virgo
144P/Kushida

144P/Kushida   radio_button_checked

Magnitude: 12.4 (Observed - COBS) trending_down
Coma Diameter: 2.7'
Tail Length: n/a
Observation Date: 2024-04-22
RA: 08h 18m 38s   Decl: +14° 49’ 44”
in Cancer
62P/Tsuchinshan

62P/Tsuchinshan   radio_button_checked

Magnitude: 13.4 (Observed - COBS) trending_down
Coma Diameter: 2.4'
Tail Length: n/a
Observation Date: 2024-04-16
RA: 12h 03m 51s   Decl: +07° 20’ 27”
in Virgo
C/2021 G2 (Atlas)

C/2021 G2 (Atlas)   radio_button_checked

Magnitude: 13.6 (Observed - COBS) trending_flat
Coma Diameter: 1.1'
Tail Length: n/a
Observation Date: 2024-04-21
RA: 11h 53m 00s   Decl: -31° 56’ 11”
in Hydra
C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)   radio_button_checked

Magnitude: 13.9 (Observed - COBS) trending_down
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-04-22
RA: 06h 49m 56s   Decl: +32° 10’ 15”
in Gemini
C/2022 L2 (ATLAS)

C/2022 L2 (ATLAS)   radio_button_checked

Magnitude: 14.7 (Observed - COBS) trending_down
Coma Diameter: 0.7'
Tail Length: n/a
Observation Date: 2024-04-21
RA: 11h 05m 29s   Decl: -35° 04’ 16”
in Hydra
C/2019 U5 (PANSTARRS)

C/2019 U5 (PANSTARRS)   radio_button_checked

Magnitude: 14.8 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2024-04-21
RA: 07h 21m 53s   Decl: -35° 49’ 48”
in Puppis
C/2020 K1 (PANSTARRS)

C/2020 K1 (PANSTARRS)   radio_button_checked

Magnitude: 15.4 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2024-04-21
RA: 05h 06m 44s   Decl: -45° 45’ 20”
in Pictor
C/2019 T4 (ATLAS)

C/2019 T4 (ATLAS)   radio_button_checked

Magnitude: 15.9 (Observed - COBS) trending_flat
Coma Diameter: 0.8'
Tail Length: n/a
Observation Date: 2024-04-16
RA: 17h 46m 19s   Decl: +29° 38’ 32”
in Hercules
C/2024 C4 (ATLAS)

C/2024 C4 (ATLAS)   radio_button_checked

Magnitude: 16.5 (Observed - COBS) trending_down
Coma Diameter: 0.3'
Tail Length: 0.8'
Observation Date: 2024-04-18
RA: 16h 01m 36s   Decl: +15° 14’ 55”
in Serpens
207P/NEAT

207P/NEAT   radio_button_checked

Magnitude: 16.7 (Observed - COBS) trending_down
Coma Diameter: 0.5'
Tail Length: n/a
Observation Date: 2024-04-16
RA: 11h 05m 34s   Decl: +04° 45’ 44”
in Leo
C/2023 V4 (Camarasa-Duszanowicz)

C/2023 V4 (Camarasa-Duszanowicz)   radio_button_checked

Magnitude: 14.5 (Predicted - JPL) trending_up
RA: 03h 24m 44s   Decl: +26° 20’ 57”
in Aries
C/2020 V2 (ZTF)

C/2020 V2 (ZTF)   radio_button_checked

Magnitude: 14.7 (Predicted - JPL) trending_down
RA: 00h 21m 52s   Decl: -42° 43’ 50”
in Phoenix
P/2010 H2 (Vales)

P/2010 H2 (Vales)   radio_button_checked

Magnitude: 14.9 (Predicted - JPL) trending_flat
RA: 07h 54m 58s   Decl: +34° 06’ 09”
in Lynx
C/2022 S4 (Lemmon)

C/2022 S4 (Lemmon)   radio_button_checked

Magnitude: 15.1 (Predicted - JPL) trending_up
RA: 02h 50m 48s   Decl: -33° 50’ 27”
in Fornax
32P/Comas Sola

32P/Comas Sola   radio_button_checked

Magnitude: 15.8 (Predicted - JPL) trending_flat
RA: 05h 49m 10s   Decl: +30° 10’ 38”
in Auriga
C/2021 T4 (Lemmon)

C/2021 T4 (Lemmon)   radio_button_checked

Magnitude: 16.0 (Predicted - JPL) trending_down
RA: 12h 31m 09s   Decl: +22° 13’ 39”
in Coma
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