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A Complete Guide to the Solar System and the Night Sky
FAQ
FAQ
public Location: Greenwich, United Kingdom
Timezone: Europe/London
Sunrise: 5:24 
Transit: 12:55 
Sunset: 20:27
wb_twilight   (Astronomical Twilight)   What's Visible Now?

Solar System Object Locator

Use this form to visualize the position of Solar System objects at given date and time on an interactive sky map.
Time: : UTC

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

12P/Pons-Brooks   radio_button_checked

12P/Pons-Brooks
visibility

12P/Pons-Brooks   radio_button_checked

Magnitude: 4.7 (Observed - COBS) trending_down
Coma Diameter: 6.0'
Tail Length: 1.0°
Observation Date: 2024-05-03
RA: 04h 15m 14s   Decl: -00° 05’ 32”
in Eridanus

13P/Olbers   radio_button_checked

13P/Olbers
stars

13P/Olbers   radio_button_checked

Magnitude: 8.6 (Observed - COBS) trending_up
Coma Diameter: 3.0'
Tail Length: n/a
Observation Date: 2024-05-04
RA: 04h 48m 27s   Decl: +27° 53’ 43”
in Taurus

C/2023 A3 (Tsuchinshan-ATLAS)   radio_button_checked

C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)   radio_button_checked

Magnitude: 10.0 (Observed - COBS) trending_up
Coma Diameter: 2.0'
Tail Length: n/a
Observation Date: 2024-05-04
RA: 13h 12m 14s   Decl: -00° 15’ 08”
in Virgo

29P/Schwassmann-Wachmann   radio_button_checked

29P/Schwassmann-Wachmann

29P/Schwassmann-Wachmann   radio_button_checked

Magnitude: 13.4 (Observed - COBS) trending_flat
Coma Diameter: 2.8'
Tail Length: n/a
Observation Date: 2024-05-01
RA: 08h 11m 35s   Decl: +20° 27’ 02”
in Cancer

C/2021 S3 (PANSTARRS)   radio_button_checked

C/2021 S3 (PANSTARRS)
stars

C/2021 S3 (PANSTARRS)   radio_button_checked

Magnitude: 13.4 (Observed - COBS) trending_down
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-05-04
RA: 20h 23m 35s   Decl: +45° 14’ 19”
in Cygnus

C/2021 G2 (Atlas)   radio_button_checked

C/2021 G2 (Atlas)

C/2021 G2 (Atlas)   radio_button_checked

Magnitude: 13.9 (Observed - COBS) trending_flat
Coma Diameter: 1.1'
Tail Length: 1.9'
Observation Date: 2024-05-04
RA: 11h 52m 03s   Decl: -30° 21’ 18”
in Hydra

32P/Comas Sola   radio_button_checked

32P/Comas Sola

32P/Comas Sola   radio_button_checked

Magnitude: 14.0 (Observed - COBS) trending_down
Coma Diameter: 1.9'
Tail Length: 0.8'
Observation Date: 2024-04-27
RA: 06h 13m 15s   Decl: +30° 16’ 04”
in Auriga

62P/Tsuchinshan   radio_button_checked

62P/Tsuchinshan

62P/Tsuchinshan   radio_button_checked

Magnitude: 14.7 (Observed - COBS) trending_down
Coma Diameter: 1.8'
Tail Length: n/a
Observation Date: 2024-05-04
RA: 12h 05m 47s   Decl: +06° 07’ 51”
in Virgo

C/2022 L2 (ATLAS)   radio_button_checked

C/2022 L2 (ATLAS)

C/2022 L2 (ATLAS)   radio_button_checked

Magnitude: 14.7 (Observed - COBS) trending_down
Coma Diameter: 0.9'
Tail Length: 1.3'
Observation Date: 2024-05-04
RA: 10h 38m 11s   Decl: -32° 24’ 10”
in Antlia

C/2019 U5 (PANSTARRS)   radio_button_checked

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: 2024-05-04
RA: 07h 20m 55s   Decl: -34° 42’ 35”
in Puppis

C/2020 K1 (PANSTARRS)   radio_button_checked

C/2020 K1 (PANSTARRS)

C/2020 K1 (PANSTARRS)   radio_button_checked

Magnitude: 15.5 (Observed - COBS) trending_down
Coma Diameter: 0.8'
Tail Length: 1.3'
Observation Date: 2024-05-04
RA: 05h 16m 49s   Decl: -43° 43’ 05”
in Pictor

C/2019 T4 (ATLAS)   radio_button_checked

C/2019 T4 (ATLAS)

C/2019 T4 (ATLAS)   radio_button_checked

Magnitude: 15.6 (Observed - COBS) trending_down
Coma Diameter: 0.7'
Tail Length: n/a
Observation Date: 2024-05-02
RA: 17h 44m 17s   Decl: +30° 37’ 35”
in Hercules

C/2022 E2 (ATLAS)   radio_button_checked

C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)   radio_button_checked

Magnitude: 15.9 (Observed - COBS) trending_flat
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-05-04
RA: 06h 49m 19s   Decl: +32° 49’ 35”
in Gemini

144P/Kushida   radio_button_checked

144P/Kushida

144P/Kushida   radio_button_checked

Magnitude: 16.3 (Observed - COBS) trending_down
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-05-04
RA: 08h 42m 13s   Decl: +13° 41’ 11”
in Cancer

207P/NEAT   radio_button_checked

207P/NEAT

207P/NEAT   radio_button_checked

Magnitude: 17.2 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2024-04-29
RA: 11h 24m 41s   Decl: +04° 38’ 14”
in Leo

65P/Gunn   radio_button_checked

65P/Gunn

65P/Gunn   radio_button_checked

Magnitude: 17.6 (Observed - COBS) trending_down
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-05-04
RA: 12h 38m 16s   Decl: +05° 13’ 44”
in Virgo

C/2024 C4 (ATLAS)   radio_button_checked

C/2024 C4 (ATLAS)

C/2024 C4 (ATLAS)   radio_button_checked

Magnitude: 17.6 (Observed - COBS) trending_down
Coma Diameter: 0.3'
Tail Length: n/a
Observation Date: 2024-05-02
RA: 15h 40m 11s   Decl: +23° 36’ 31”
in Serpens

C/2021 T4 (Lemmon)   radio_button_checked

C/2021 T4 (Lemmon)

C/2021 T4 (Lemmon)   radio_button_checked

Magnitude: 17.8 (Observed - COBS) trending_down
Coma Diameter: n/a
Tail Length: n/a
Observation Date: 2024-05-04
RA: 12h 16m 42s   Decl: +22° 49’ 16”
in Coma

C/2023 V4 (Camarasa-Duszanowicz)   radio_button_checked

C/2023 V4 (Camarasa-Duszanowicz)

C/2023 V4 (Camarasa-Duszanowicz)   radio_button_checked

Magnitude: 14.3 (Predicted - JPL) trending_up
RA: 03h 43m 43s   Decl: +31° 59’ 38”
in Perseus

C/2020 V2 (ZTF)   radio_button_checked

C/2020 V2 (ZTF)

C/2020 V2 (ZTF)   radio_button_checked

Magnitude: 14.8 (Predicted - JPL) trending_flat
RA: 00h 27m 05s   Decl: -43° 59’ 12”
in Phoenix
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