File:Ceres_-_RC3_-_Haulani_Crater_(22381131691)_(cropped).jpg · Wikimedia Commons · See Wikimedia Commons

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ケレス

Also known as (1) Ceres, 1 Ceres, Ceres (dwarf planet)

小惑星帯にある太陽系の準惑星

AI overview

Ceres is the largest asteroid in the asteroid belt between Mars and Jupiter, and it's officially classified as a dwarf planet. Scientists study it because understanding its composition and structure helps reveal how the early Solar System formed.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Instance of: planet
Named after: Ceres
Followed by: 2 Pallas
Location: asteroid belt
Parent body: Sun
Minor-planet group: asteroid belt
Diameter: 939.4
Mass: 939300000000000000000
Orbital period: 1679.910572771899
Image: Ceres - RC3 - Haulani Crater (22381131691) (cropped).jpg
Has use: colonization of Ceres

Show 30 more facts

IPA transcription: ˈt͡seːʁɛs
discoverer or inventor: Giuseppe Piazzi
Commons category: Ceres (dwarf planet)
site of astronomical discovery: Astronomical observatory of Palermo
Unicode character: ⚳
time of discovery or invention: 1801-01-01
topic's main category: Category:Ceres (dwarf planet)
Commons gallery: (1) Ceres
described by source: The Nuttall Encyclopædia
provisional designation: A801 AA
apparent magnitude: 6.79
albedo: 0.090
asteroid spectral type: C-type asteroid
density: 2.162
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
rotation period: 9.07417
absolute magnitude: 3.34
volume as quantity: 434000000
angular diameter: 0.854
orbital eccentricity: 0.07957631994408416
semi-major axis of an orbit: 2.765615651508659
periapsis: 2.545538135581839
apoapsis: 2.985693167435478
orbital inclination: 10.58788658206854
longitude of ascending node: 80.24963090816965
argument of periapsis: 73.29975464616518
mean anomaly: 231.5397330043706
time of periapsis: 2461599.9493352976
epoch: November 21, 2025
maintained by WikiProject: WikiProject Astronomy

Sources (8)

via Wikidata · CC0

Article · 日本語

ケレスまたはセレス（英語: Ceres [ˈsɪəriːz]; シンボル: ）は、火星と木星の間の小惑星帯（メインベルト）に位置する準惑星。直径は945 kmと、メインベルト最大の天体である。海王星軌道の内側にある（海王星より軌道長半径が小さい）唯一の準惑星でもある。既知の太陽系の天体の中で33番目に大きい。

Abstract from DBpedia / Wikipedia · CC BY-SA