630 Euphemia
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| Discovery A | |
|---|---|
| Discoverer | August Kopff |
| Discovery date | March 7, 1907 |
| Alternate designations B |
1907 XW; A924 DC |
| Category | Main belt (Eunomia family) |
| Orbital elements C | |
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| Eccentricity (e) | 0.114 |
| Semi-major axis (a) | 392.5 Gm (2.624 AU) |
| Perihelion (q) | 348.0 Gm (2.326 AU) |
| Aphelion (Q) | 437.1 Gm (2.922 AU) |
| Orbital period (P) | 1552.5 d (4.76 a) |
| Mean orbital speed | 18.33 km/s |
| Inclination (i) | 13.844° |
| Longitude of the ascending node (Ω) |
105.571° |
| Argument of perihelion (ω) |
40.580° |
| Mean anomaly (M) | 65.452° |
| Physical characteristics D | |
| Dimensions | 17 km[1] |
| Mass | ~7×1015 kg (estimate) |
| Density | ~2.7 g/cm³ (estimate)[2] |
| Surface gravity | ~0.006 m/s² (estimate) |
| Escape velocity | ~0.011 km/s (estimate) |
| Rotation period | unknown |
| Spectral class | S-type asteroid |
| Absolute magnitude | 11.00 |
| Albedo (geometric) | 0.238 |
| Mean surface temperature |
~165 K max: 248K (-26° C) |
630 Euphemia is a minor planet orbiting the Sun.
[edit] References
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G. A. Krasinsky et al Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).
[edit] External links
| Minor planets | ||
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| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
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