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44 Nysa
From Wikipedia, the free encyclopedia
| Discovery | |
|---|---|
| Discovered by: | H. Goldschmidt |
| Discovery date: | May 27, 1857 |
| Alternative names: | 1977 CE |
| Minor planet category: | Main belt (Nysa) |
| Orbital characteristics | |
| Epoch July 14, 2004 (JD 2453200.5) | |
| Aphelion distance: | 416.457 Gm (2.784 AU) |
| Perihelion distance: | 308.491 Gm (2.062 AU) |
| Semi-major axis: | 362.474 Gm (2.423 AU) |
| Eccentricity: | 0.149 |
| Orbital period: | 1377.608 d (3.77 a) |
| Avg. orbital speed: | 19.13 km/s |
| Mean anomaly: | 112.959° |
| Inclination: | 3.703° |
| Longitude of ascending node: | 131.610° |
| Argument of perihelion: | 342.519° |
| Physical characteristics | |
| Dimensions: | 70.6 km |
| Mass: | 3.7×1017 kg |
| Mean density: | 2.0 g/cm³ |
| Equatorial surface gravity: | 0.0197 m/s² |
| Escape velocity: | 0.0373 km/s |
| Rotation period: | 0.2676 d |
| Albedo: | 0.546 2 |
| Temperature: | ~151 K |
| Spectral type: | E |
| Absolute magnitude: | 7.03 |
44 Nysa (IPA: [ˈnaɪsə]) is a quite large and very bright main belt asteroid. It is also the brightest member of the Nysa asteroid family. It is classified as a rare class E asteroid and is probably the largest of this type (though 55 Pandora is only slightly smaller).
It was discovered by H. Goldschmidt on May 27, 1857 and named after the mythical land of Nysa in Greek mythology.
The shape model constructed from the lightcurve of Nysa is conical, indicating that the asteroid may actually be a contact binary [1].
Nysa has so far been reported occulting a star twice.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 44 Nysa | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
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.