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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:45 
Transit: 13:02 
Sunset: 21:19
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Dwarf Planets and Asteroids » 

Asteroid 1 Ceres

Above the horizon.  Rise: 2:09 | Tran: 7:39 | Set: 13:09
Alt: 17.40°   Az: 236.18°   Direction: South

Asteroid 1 Ceres is in the constellation of Cetus, at a distance of 434,427,045.0 kilometers from Earth. The current Right Ascension is 00h 58m 10s and the Declination is -05° 33’ 08” (apparent coordinates). The magnitude of asteroid 1 Ceres is 9.05.

Finder Charts

The sky charts below show, at different resolutions, the position of asteroid 1 Ceres in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of asteroid 1 Ceres in the constellation of Cetus on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of asteroid 1 Ceres in the constellation of Cetus on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of asteroid 1 Ceres against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

1 Ceres
RA: 00h 56m 53s
Dec: -05° 41’ 22”
Simplified high-resolution deep sky chart showing the current position of asteroid 1 Ceres. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

00h 58m 10s
-05° 33’ 08”
03h 31m 11s
04h 29m 22s

J2000

00h 56m 53s
-05° 41’ 22”

Additional Information

Cetus
9.05

Rise and Set Times

The following table lists today's rise, transit and set times of asteroid 1 Ceres from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 95.6°
Max altitude: 33.0°
Azimuth: 264.5°

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Distance from Earth

The distance of asteroid 1 Ceres from Earth is currently 434,427,045.0 kilometers, equivalent to 2.9039654306 Astronomical Units. Light takes 24m 9.093s to travel from asteroid 1 Ceres and arrive to us.

434,427,045.0
2.9039654306
24m 9.093s

The following graph shows the distance of asteroid 1 Ceres from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of asteroid 1 Ceres from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of 1 Ceres from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 1600 and December 30, 2499, the closest approach of asteroid 1 Ceres to Earth happened on Monday 11 February 1636 at a distance of 1.573972 Astronomical Units, or 235,462,867 kilometers:

Monday 11 February 1636
235,462,867
1.573972

Note: the values for the closest approach are computed with a sampling interval of 1 day.

Light Curve

The following chart shows the light curve of asteroid 1 Ceres, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of asteroid 1 Ceres as a function of time

Orbital Elements

The following table lists the orbital elements of asteroid 1 Ceres at epoch February, 24 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.07881745
Orbit inclination i 10.58634327°
Perihelion distance q 2.54907953 AU
381,336,871 km
Aphelion distance Q 2.98528395 AU
446,592,124 km
Semi-major axis a 2.76718174 AU
413,964,497 km
Orbital period period 4.6033 years
1,681.3377 days
Date of perihelion transit Tp December 6, 2022
2,459,920.0963 JD
Next perihelion transit July 14, 2027
2,461,601.4340 JD
Argument of perihelion peri 73.470461544247°
Longitude of the ascending node node 80.260148690589°
Mean anomaly M 17.215651496148°
Mean motion n 0.21411522°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of asteroid 1 Ceres relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

Physical Properties

The table below lists the known key physical properties of asteroid 1 Ceres. The source for this data is the JPL Small-Body Database.

Physical Parameter Value Relative to Earth
Diameter 952.4 km 0.0747
Sideral Rotation 9.0742 hours 0.3791
Absolute Magnitude 3.34
Geometric Albedo 0.09

15 Days Ephemeris

The following table lists the ephemerides of asteroid 1 Ceres computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
Jun 19 2025 00h 51m 21s -05° 53’ 13” 9.11 Cetus
Jun 20 2025 00h 52m 19s -05° 50’ 11” 9.10 Cetus
Jun 21 2025 00h 53m 15s -05° 47’ 15” 9.09 Cetus
Jun 22 2025 00h 54m 11s -05° 44’ 25” 9.09 Cetus
Jun 23 2025 00h 55m 06s -05° 41’ 41” 9.08 Cetus
Jun 24 2025 00h 56m 01s -05° 39’ 03” 9.07 Cetus
Jun 25 2025 00h 56m 55s -05° 36’ 32” 9.06 Cetus
Jun 26 2025 00h 57m 48s -05° 34’ 07” 9.05 Cetus
Jun 27 2025 00h 58m 41s -05° 31’ 49” 9.04 Cetus
Jun 28 2025 00h 59m 32s -05° 29’ 37” 9.03 Cetus
Jun 29 2025 01h 00m 23s -05° 27’ 32” 9.02 Cetus
Jun 30 2025 01h 01m 14s -05° 25’ 32” 9.01 Cetus
Jul 01 2025 01h 02m 03s -05° 23’ 39” 9.00 Cetus
Jul 02 2025 01h 02m 52s -05° 21’ 54” 8.99 Cetus

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