31 اوفروسين
 Three-dimensional model of 31 Euphrosyne created based on light-curve | |
| الاكتشاف | |
|---|---|
| اكتشفه | ج. فرگسن |
| تاريخ الاكتشاف | September 1, 1854 |
| التسميات | |
| تعيين الكوكب الأصغر | (31) Euphrosyne |
| النطق | []juːˈfrɒzɪni[] yoo-FROZ-i-nee |
مسمى على اسم | Euphrosyne |
| A907 GP; A918 GB | |
| Main belt | |
| السمات المدارية[1] | |
| حقبة April 27, 2019 (JD 2458600.5) | |
| Aphelion | 3.8523 AU (576.296 Gm) |
| Perihelion | 2.4585 AU (367.786 Gm) |
| 3.1554 AU (472.041 Gm) | |
| Eccentricity | 0.2209 |
| 5.61 yr (2041.585 d) | |
| 87.1671° | |
| Inclination | 26.3033° |
| 31.1186° | |
| 61.4704° | |
| السمات الطبيعية | |
| الأبعاد | 267.08±2.611 km (IRAS)[1] |
| Mass | (5.81±1.97)×1019 kg[2] |
Mean density | 6.61 ± 2.41 g/cm³[2] |
| 0.2305 d (5.531 h)[1] | |
| 0.0543[3] | |
| C[1][4] | |
| 10.16[5] to 13.61 | |
| 6.74[1] | |
أوفروسين 31 31 Euphrosyne كويكب سماوي يقع في حزام الكويكبات الواقع بين مداري كوكبى المريخ والمشتري .
Its rotation period is typical for large asteroids.[بحاجة لمصدر] Nothing is known of its axial tilt.
Euphrosyne has been studied by radar.[6]
This object is the namesake of a family of 323–2066 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[7]
Asteroid Euphrosyne—time-lapse view by WISE (May 17, 2010)
الاكتشاف
اكتشف سنة 1854 يبلغ قطره نحو 270 كيلو مترا وبعده المتوسط عن الشمس نحو 3,15 وحدة فلكية.
انظر أيضا
المراجع
- ^ أ ب ت ث ج "JPL Small-Body Database Browser: 31 Euphrosyne" (2018-06-15 last obs). Retrieved 2019-04-28.
- ^ أ ب Baer, James; Chesley, Steven R; Matson, Robert D (2011). "Astrometric Masses of 26 Asteroids and Observations on Asteroid Porosity". The Astronomical Journal. 141 (5): 143. Bibcode:2011AJ....141..143B. doi:10.1088/0004-6256/141/5/143.
- ^ Albedo table
- ^ Astrometric and Geodetic Properties of Earth and the Solar System
- ^ "Bright Minor Planets 2000". Minor Planet Center. Retrieved 2008-05-23.[dead link]
- ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 2011-10-30.
- ^ Novaković, Bojan; Cellino, Alberto; Knežević, Zoran (November 2011), Families among high-inclination asteroids, 216, pp. 69–81, doi:, Bibcode: 2011Icar..216...69N.
المصادر
- مؤمن, عبد الأمير (2006). قاموس دار العلم الفلكي. بيروت، لبنان: دار العلم للملايين.
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وصلات خارجية
- Orbital simulation from JPL (Java) / Horizons Ephemeris
الكلمات الدالة:
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