Highlights

• The Sun is in Taurus, the Moon is Third Quarter in Aquarius
• T CrB: magnitude 10.121 ± 0.005 [2025-05-20 10:52:14 UTC, CCD/CV, IDG/AAVSO]
• Comet C/2025 F2 (SWAN): magnitude 9.76 in Orion
• Comet C/2023 A3 (Tsuchinshan-ATLAS): magnitude 11.0 in Vulpecula
• Comet 29P/Schwassmann-Wachmann: magnitude 12.6 in Leo
• Next NEO approach: Asteroid (NEO) 2025 KF, May 21 2025 at 17:30 UTC, 115,359 km, 0.30 lunar distances
• Asteroid 3 Juno is close to opposition
• Asteroid 9 Metis is close to opposition
• Asteroid 349 Dembowska (1892 T) is close to opposition

Popular Objects

Popular objects during the last 7 days based on the number of visualizations.

Sun and Moon

How the Sun and the Moon look like today.

	R.A.	Decl.	Apparent Diameter	MagnitudeMag	ConstellationConst	Charts
radio_button_checked Sun	03h 50m 54s	+20° 07’ 38”	1,896.2”	-26.72 trending_flat	Taurus	map my_location
radio_button_checked Moon	22h 18m 57s	-13° 05’ 38”	1,896.5”	-10.04 trending_down	Aquarius	map

The Planets

Current essential information about the planets. Click each planet to view full details.

Planet	R.A.	Decl.	Diameter	MagnitudeMag	ConstellationConst	Charts
radio_button_checked Mercury	03h 06m 43s	+16° 23’ 24”	5.3”	-1.21 trending_up	Aries	map my_location
radio_button_checked Venus	00h 55m 45s	+04° 29’ 18”	27.4”	-4.54 trending_down	Pisces	map my_location
radio_button_checked Mars	09h 12m 30s	+17° 51’ 00”	5.8”	1.15 trending_down	Cancer	map my_location
radio_button_checked Jupiter	05h 40m 25s	+23° 09’ 36”	32.0”	-1.93 trending_flat	Taurus	map my_location
radio_button_checked Saturn	00h 02m 00s	-02° 01’ 53”	16.0”	1.12 trending_flat	Pisces	map my_location
radio_button_checked Uranus	03h 40m 56s	+19° 22’ 58”	3.4”	5.85 trending_flat	Taurus	map my_location
radio_button_checked Neptune	00h 08m 02s	-00° 31’ 59”	2.2”	7.79 trending_flat	Pisces	map my_location

Jupiter Moons

Position of the Galilean satellites of Jupiter. A dedicated tool is available, with more advanced features.

List of 5 upcoming phenomena of Jupiter's satellites:

Date	Local Time	Satellite	Event
May 21	00:40	Io	Begin Transit
May 21	01:14	Io	Begin Shadow Transit
May 21	02:54	Io	End Transit
May 21	03:29	Io	End Shadow Transit
May 21	21:50	Io	Begin Occultation

To see the complete list of the upcoming phenomena for the next 7 days consult the dedicated Jupiter's Galilean Moons section.

Saturn Moons & Rings

Inclination of the rings of Saturn and positions of major satellites. A dedicated tool is available, with more advanced features.

Apparent Planet Sizes

Comparison between the apparent size of the planets, measured in seconds of a degree, as they appear today.

Credits for the planet images: NASA-APL - NASA.

Brightest Comets

List of the 10 brightest comets (open the full list of 243 comets).

	Comet	R.A.	Decl.	Magnitude (COBS)Mag Obs	Magnitude (JPL)Mag Pred		ConstellationConst	Charts
radio_button_checked	C/2025 F2 (SWAN)	05h 13m 15s	-04° 39’ 44”	-	9.76	trending_down	Orion Ori	map my_location
radio_button_checked	C/2023 A3 (Tsuchinshan-ATLAS)	19h 57m 22s	+26° 56’ 32”	11.0	14.37	trending_flat	Vulpecula Vul	map my_location
radio_button_checked	29P/Schwassmann-Wachmann	09h 41m 24s	+10° 20’ 09”	12.6	17.69	trending_down	Leo Leo	map my_location
radio_button_checked	C/2021 G2 (Atlas)	15h 17m 09s	-05° 20’ 40”	13.3	14.87	trending_flat	Libra Lib	map my_location
radio_button_checked	P/2010 H2 (Vales)	13h 09m 33s	+05° 11’ 23”	-	13.73	trending_down	Virgo Vir	map my_location
radio_button_checked	C/2024 J2 (Wierzchos)	01h 31m 14s	+12° 11’ 57”	-	14.66	trending_down	Pisces Psc	map my_location
radio_button_checked	C/2023 H5 (Lemmon)	10h 37m 49s	+65° 30’ 43”	15.1	16.57	trending_down	Ursa Major UMa	map my_location
radio_button_checked	C/2022 E2 (ATLAS)	01h 52m 37s	+49° 34’ 23”	-	15.37	trending_down	Perseus Per	map my_location
radio_button_checked	C/2022 N2 (PANSTARRS)	01h 44m 25s	+15° 04’ 47”	-	15.48	trending_flat	Pisces Psc	map my_location
radio_button_checked	C/2024 G3 (ATLAS)	02h 20m 22s	-51° 12’ 09”	-	15.65	trending_down	Eridanus Eri	map my_location

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.

Brightest Asteroids

List of the 10 brightest asteroids (open the full list of 78 asteroids and dwarf planets.)

	Asteroid	R.A.	Decl.	MagnitudeMag		ConstellationConst	Charts
radio_button_checked	4 Vesta	14h 35m 52s	-03° 59’ 15”	5.86	trending_down	Virgo	map my_location
radio_button_checked	1 Ceres	00h 19m 26s	-08° 01’ 32”	9.28	trending_flat	Cetus	map my_location
radio_button_checked	7 Iris	04h 05m 49s	+21° 44’ 35”	9.51	trending_up	Taurus	map my_location
radio_button_checked	6 Hebe	21h 57m 46s	-07° 07’ 48”	9.90	trending_up	Aquarius	map my_location
radio_button_checked	9 Metis	14h 57m 42s	-14° 00’ 56”	9.95	trending_down	Libra	map my_location
radio_button_checked	3 Juno	15h 38m 33s	-02° 14’ 33”	10.01	trending_down	Serpens	map my_location
radio_button_checked	2 Pallas	21h 06m 22s	+14° 50’ 38”	10.24	trending_up	Delphinus	map my_location
radio_button_checked	349 Dembowska	15h 04m 35s	-21° 49’ 12”	10.40	trending_down	Libra	map my_location
radio_button_checked	15 Eunomia	07h 15m 00s	+20° 24’ 17”	10.73	trending_flat	Gemini	map my_location
radio_button_checked	5 Astraea	17h 17m 06s	-15° 08’ 33”	10.84	trending_up	Ophiuchus	map my_location

Active Meteor Showers

List of the currently active meteor showers.

	Name	Peak	Radiant R.A.	Radiant Decl.	ZHR ⓘ	Rating	Parent Object	Charts
radio_button_checked	Eta Aquariids	6 May	22h 30m	-01°	50	bright	1P/Halley	map
radio_button_checked	Daytime Arietids	7 Jun	02h 53m	+24°	50	medium	1566 Icarus ?	map