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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: 5:05 
Transit: 12:55 
Sunset: 20:45
wb_twilight   (Astronomical Twilight)   What's Visible Now?

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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

242P/Spahr   radio_button_checked

242P/Spahr

242P/Spahr   radio_button_checked

Magnitude: 19.1 (Predicted - JPL) trending_up
RA: 02h 33m 27s   Decl: -00° 12’ 15”
in Cetus

164P/Christensen   radio_button_checked

164P/Christensen

164P/Christensen   radio_button_checked

Magnitude: 19.1 (Predicted - JPL) trending_up
RA: 21h 11m 13s   Decl: -25° 22’ 01”
in Capricornus

C/2023 R1 (PANSTARRS)   radio_button_checked

C/2023 R1 (PANSTARRS)

C/2023 R1 (PANSTARRS)   radio_button_checked

Magnitude: 19.2 (Predicted - JPL) trending_up
RA: 00h 20m 47s   Decl: +27° 16’ 56”
in Andromeda

226P/Pigott-LINEAR-Kowalski   radio_button_checked

226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski   radio_button_checked

Magnitude: 19.4 (Predicted - JPL) trending_down
RA: 04h 59m 05s   Decl: +43° 31’ 48”
in Auriga

209P/LINEAR   radio_button_checked

209P/LINEAR

209P/LINEAR   radio_button_checked

Magnitude: 19.5 (Predicted - JPL) trending_up
RA: 07h 30m 25s   Decl: +38° 53’ 25”
in Auriga

77P/Longmore   radio_button_checked

77P/Longmore

77P/Longmore   radio_button_checked

Magnitude: 19.5 (Predicted - JPL) trending_flat
RA: 22h 51m 46s   Decl: -31° 24’ 40”
in Pisces Austrinus

21P/Giacobini-Zinner   radio_button_checked

21P/Giacobini-Zinner

21P/Giacobini-Zinner   radio_button_checked

Magnitude: 19.6 (Predicted - JPL) trending_up
RA: 15h 27m 34s   Decl: +09° 29’ 59”
in Serpens

P/2021 N2 (Fuls)   radio_button_checked

P/2021 N2 (Fuls)

P/2021 N2 (Fuls)   radio_button_checked

Magnitude: 19.6 (Predicted - JPL) trending_down
RA: 08h 44m 01s   Decl: +05° 09’ 10”
in Hydra

C/2021 C5 (PANSTARRS)   radio_button_checked

C/2021 C5 (PANSTARRS)

C/2021 C5 (PANSTARRS)   radio_button_checked

Magnitude: 19.6 (Predicted - JPL) trending_flat
RA: 22h 11m 17s   Decl: -21° 23’ 59”
in Aquarius

P/2021 V2 (Fuls)   radio_button_checked

P/2021 V2 (Fuls)

P/2021 V2 (Fuls)   radio_button_checked

Magnitude: 19.7 (Predicted - JPL) trending_down
RA: 12h 57m 49s   Decl: -13° 36’ 09”
in Virgo

94P/Russell   radio_button_checked

94P/Russell

94P/Russell   radio_button_checked

Magnitude: 19.7 (Predicted - JPL) trending_flat
RA: 17h 57m 01s   Decl: -24° 45’ 06”
in Sagittarius

129P/Shoemaker-Levy   radio_button_checked

129P/Shoemaker-Levy

129P/Shoemaker-Levy   radio_button_checked

Magnitude: 19.7 (Predicted - JPL) trending_down
RA: 12h 38m 59s   Decl: -02° 58’ 06”
in Virgo

C/2020 F5 (MASTER)   radio_button_checked

C/2020 F5 (MASTER)

C/2020 F5 (MASTER)   radio_button_checked

Magnitude: 19.7 (Predicted - JPL) trending_down
RA: 00h 43m 07s   Decl: +40° 17’ 02”
in Andromeda

2P/Encke   radio_button_checked

2P/Encke

2P/Encke   radio_button_checked

Magnitude: 19.8 (Predicted - JPL) trending_flat
RA: 22h 46m 20s   Decl: -11° 10’ 26”
in Aquarius

C/2022 U4 (Bok)   radio_button_checked

C/2022 U4 (Bok)

C/2022 U4 (Bok)   radio_button_checked

Magnitude: 19.8 (Predicted - JPL) trending_down
RA: 20h 27m 34s   Decl: +04° 41’ 20”
in Delphinus

333P/LINEAR   radio_button_checked

333P/LINEAR

333P/LINEAR   radio_button_checked

Magnitude: 19.8 (Predicted - JPL) trending_up
RA: 09h 03m 04s   Decl: -45° 46’ 14”
in Vela

C/2019 F1 (ATLAS-Africano)   radio_button_checked

C/2019 F1 (ATLAS-Africano)

C/2019 F1 (ATLAS-Africano)   radio_button_checked

Magnitude: 19.8 (Predicted - JPL) trending_flat
RA: 02h 25m 17s   Decl: +09° 29’ 46”
in Cetus

49P/Arend-Rigaux   radio_button_checked

49P/Arend-Rigaux

49P/Arend-Rigaux   radio_button_checked

Magnitude: 19.9 (Predicted - JPL) trending_up
RA: 23h 29m 10s   Decl: -13° 48’ 15”
in Aquarius

26P/Grigg-Skjellerup   radio_button_checked

26P/Grigg-Skjellerup

26P/Grigg-Skjellerup   radio_button_checked

Magnitude: 19.9 (Predicted - JPL) trending_flat
RA: 22h 34m 36s   Decl: +14° 01’ 27”
in Pegasus

103P/Hartley   radio_button_checked

103P/Hartley

103P/Hartley   radio_button_checked

Magnitude: 20.0 (Predicted - JPL) trending_down
RA: 09h 05m 37s   Decl: +04° 09’ 19”
in Hydra
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