Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Today's news and hilights

  • Recently discovered Comet C/2021 A1 Leonard is promising to become very bright by the end of the year, so it's definitely worth following it!
  • Check out our list of 2021 Astronomical events and plan for your observations!
  • The Sun is in the constellation of Capricornus. The Moon is in the constellation of Gemini and it is in Waxing Gibbous phase.
  • The Sun and Jupiter are in conjunction with an apparent angular separation of 1° 46’ 57”, currently decreasing. See in Planetarium.
  • Comet P/2016 J3 (STEREO) latest observed magnitude is 10.4 and it is in the constellation of Aquila. It should be visible with the help of a binocular with a 80mm aperture or a small telescope.
  • Comet 141P/Machholz 2 latest estimated magnitude is 10.80 and it is in the constellation of Cetus. It should be visible with the help of a telescope havng an aperture of 6 inches (150mm) or more.
  • Comet 88P/Howell latest observed magnitude is 11.1 and it is in the constellation of Aquarius. It should be visible with the help of a telescope havng an aperture of 6 inches (150mm) or more.
  • The next close approach with a Near Earth Object (NEO) will happen with Asteroid (NEO) 2021 BZ on Jan 28 2021 at 04:12 UTC (1 days 7 hours 4 minutes), at an approach distance of 2,149,362 kilometers, or 5.59 lunar distances, and a relative speed of 13.75 kilometers per second.
  • Asteroid 10 Hygiea is at opposition, current elongation 176.7°
  • Asteroid 14 Irene is at opposition, current elongation 169.6°
  • Asteroid 15 Eunomia is at opposition, current elongation 172.7°
  • Asteroid 18 Melpomene is at opposition, current elongation 170.0°

Your guide to the Solar System and the night sky

Quick links

Popular Objects This Week

Popular objects this week

Current Solar System Configuration

This interactive 3D model shows the today's configuration of the major bodies of the Solar System along their orbits. It is an experimental feature and it requires a WebGL enabled browser. For more advanced features, check out our 3D Solar System Simulator. Please provide us feedback!

Animate view
Left-click and drag to change the viewing angles; Right-click and drag to pan; Pinch or mouse-wheel to zoom.
View larger 3D Solar System Simulator

The Sun and the Moon Today

Here is how the Sun and the Moon look like today.

Credit: NASA, SDO, and the HMI Science Team
Information about the Sun
Current Sun Sky Map
Phase: Waxing Gibbous  Age: 12.85 days
Information about the Moon
Current Moon Sky Map
R.A. Decl. Apparent Diameter MagnitudeMag ConstellationConst Map
object currently below the horizon Sun 20h 36m 58s -18° 33’ 31” 1,948.8” -26.78 Capricornus Show sky map
current altitude greater than 30 degrees above the horizon Moon 07h 00m 47s +24° 27’ 07” 1,839.2” -12.11 Gemini Show sky map
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

The Planets Today

Key information about the Planets today. Click each row to go to each planet's detail page. Click the blue 'full screen' icon () to view an accurate deep sky chart showing the planet's current position.

Planet R.A. Decl. Apparent Diameter MagnitudeMag ConstellationConst Map
object currently below the horizon Venus 19h 37m 44s -21° 58’ 13” 10.2” -3.86 Sagittarius Show sky map
object currently below the horizon Jupiter 20h 44m 29s -18° 37’ 24” 31.8” -1.95 Capricornus Show sky map
object currently below the horizon Mercury 21h 47m 57s -12° 36’ 43” 7.6” -0.35 Capricornus Show sky map
current altitude greater than 30 degrees above the horizon Mars 02h 26m 57s +15° 50’ 38” 8.2” 0.35 Aries Show sky map
object currently below the horizon Saturn 20h 27m 16s -19° 34’ 00” 14.6” 1.33 Capricornus Show sky map
current altitude greater than 30 degrees above the horizon Uranus 02h 17m 16s +13° 16’ 16” 3.5” 5.78 Aries Show sky map
object currently below the horizon Neptune 23h 20m 35s -05° 24’ 26” 2.2” 7.94 Aquarius Show sky map
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Current Planets Apparent Size Comparison

Mercury
7.6”
Venus
10.2”
Mars
8.2”
Jupiter
31.8”
Saturn
14.6”
Uranus
3.5”
Neptune
2.2”

Images credits: NASA-APL - NASA.

Bright Comets Today

These are the brightest comets currently visible in the sky. The Observed Magnitude and Coma Diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemeris service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication.

Click on each line to go to the comet's detail page, or click the blue 'full screen' icon () to view an accurate deep sky chart showing the comet's current position in real time. Also check the full list of tracked comets (210)

Comet R.A. Decl. Magnitude (Observed)Mag Obs Magnitude (Estimated)Mag Pred Coma DiameterComa Diam ConstellationConst Map
object currently below the horizon P/2016 J3 (STEREO) 19h 33m 15s -08° 52’ 47” 10.4 26.40 3.5' Aquila Aql Show sky map
current altitude less than 30 degrees above the horizon 141P/Machholz 2 00h 36m 02s -01° 11’ 24” - 10.80 - Cetus Cet Show sky map
object currently below the horizon 88P/Howell 23h 20m 22s -06° 55’ 19” 11.1 16.61 3.1' Aquarius Aqr Show sky map
current altitude greater than 30 degrees above the horizon 156P/Russell-LINEAR 02h 25m 06s +35° 19’ 09” 11.4 16.38 3.6' Triangulum Tri Show sky map
current altitude greater than 30 degrees above the horizon C/2020 M3 (ATLAS) 05h 28m 11s +48° 41’ 43” 11.4 17.32 5.0' Auriga Aur Show sky map
object currently below the horizon C/2019 N1 (ATLAS) 15h 03m 10s -63° 14’ 29” 12.6 13.64 1.3' Circinus Cir Show sky map
current altitude greater than 30 degrees above the horizon C/2019 L3 (ATLAS) 00h 38m 47s +54° 12’ 09” 13.3 14.88 1.3' Cassiopeia Cas Show sky map
object currently below the horizon C/2021 A2 08h 27m 56s -30° 13’ 25” - 14.01 - Pyxis Pyx Show sky map
object currently below the horizon C/2019 T4 (ATLAS) 08h 14m 59s -40° 31’ 54” 14.3 16.05 0.8' Puppis Pup Show sky map
current altitude less than 30 degrees above the horizon C/2018 N2 (ASASSN) 16h 36m 44s +61° 58’ 29” 14.6 16.29 0.7' Draco Dra Show sky map
object currently below the horizon C/2017 K2 (PANSTARRS) 18h 07m 57s +35° 14’ 41” 14.8 15.58 0.9' Hercules Her Show sky map
object currently below the horizon C/2020 R4 (ATLAS) 21h 01m 03s -16° 09’ 56” - 14.94 - Capricornus Cap Show sky map
object currently below the horizon C/2020 S3 (Erasmus) 20h 53m 24s -06° 27’ 56” - 15.17 - Aquarius Aqr Show sky map
object currently below the horizon C/2020 J1 (SONEAR) 17h 49m 55s -41° 09’ 17” - 15.21 - Scorpius Sco Show sky map
object currently below the horizon C/2019 F1 (ATLAS-Africano) 17h 01m 42s -51° 45’ 48” - 15.47 - Ara Ara Show sky map
object currently below the horizon C/2020 F5 (MASTER) 21h 26m 57s -51° 19’ 21” - 15.48 - Indus Ind Show sky map
current altitude less than 30 degrees above the horizon C/2020 T2 (Palomar) 13h 40m 31s +27° 07’ 03” 15.5 16.20 1.1' Bootes Boo Show sky map
current altitude greater than 30 degrees above the horizon 29P/Schwassmann-Wachmann 1 02h 18m 10s +23° 53’ 20” - 15.84 - Aries Ari Show sky map
object currently below the horizon C/2017 T2 (PANSTARRS) 17h 17m 55s -29° 48’ 17” - 15.86 - Ophiucus Oph Show sky map
object currently below the horizon C/2021 A7 (NEOWISE) 06h 06m 20s -64° 07’ 07” 16.1 17.35 0.5' Dorado Dor Show sky map
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

Bright Asteroids Today

These are the top 10 brightest asteroids visible tonight. Click on each line to go to the asteroids's detail page, or click the blue 'full screen' icon () to view an accurate deep sky chart showing the asteroids's current position in real time. Also check the full list of tracked asteroids and dwarf planets (80)

Asteroid R.A. Decl. MagnitudeMag ConstellationConst Map
current altitude less than 30 degrees above the horizon 4 Vesta 11h 39m 47s +11° 15’ 26” 6.59 Leo Show sky map
current altitude greater than 30 degrees above the horizon 15 Eunomia 08h 07m 18s +16° 49’ 19” 8.51 Cancer Show sky map
object currently below the horizon 1 Ceres 23h 38m 05s -11° 36’ 40” 9.32 Aquarius Show sky map
current altitude greater than 30 degrees above the horizon 14 Irene 08h 36m 34s +28° 57’ 59” 9.34 Cancer Show sky map
current altitude greater than 30 degrees above the horizon 18 Melpomene 09h 03m 56s +11° 00’ 09” 9.57 Cancer Show sky map
current altitude less than 30 degrees above the horizon 29 Amphitrite 10h 49m 44s +12° 24’ 29” 9.68 Leo Show sky map
current altitude greater than 30 degrees above the horizon 10 Hygiea 08h 43m 50s +15° 40’ 56” 9.92 Cancer Show sky map
current altitude greater than 30 degrees above the horizon 8 Flora 02h 50m 30s +11° 46’ 42” 9.95 Aries Show sky map
object currently below the horizon 7 Iris 21h 42m 46s -09° 49’ 29” 10.20 Capricornus Show sky map
object currently below the horizon 2 Pallas 20h 55m 23s -00° 09’ 24” 10.49 Aquarius Show sky map
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Active Meteor Showers Today

This is a list of the currently active meteor showers. The celestial coordinates refer to the meteor shower radiant position, i.e. the point in the sky where the meteors appear to come from. The ZHR value refers to the Zenithal Hourly Rate, i.e. the average number of meteors an individual observer could see in an hour, assuming perfectly dark sky conditions. This number is an estimate, the actual number an observer could see depends on the actual intensity of the shower (which can be highly variable) and on the actual sky conditions. Clicking on the blue square icon will bring you to a sky map showing the radiant position. The data used here is derived from Wikipedia.

Name Peak Radiant R.A. Radiant Decl. ZHR Rating Parent Object Map
current altitude greater than 30 degrees above the horizon Dec. Leonis Minorids 20 Dec 10h 41m +30° 5 medium Show sky map
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]