44 Nysa
Nysa (minor planet designation: 44 Nysa) is a large and very bright main-belt asteroid, and the brightest member of the Nysian 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).
Lightcurve-based 3D-model of Nysa | |
| Discovery | |
|---|---|
| Discovered by | H. Goldschmidt |
| Discovery date | 27 May 1857 |
| Designations | |
MPC designation | (44) Nysa |
| Pronunciation | /ˈnaɪsə/ |
Named after | Nysa |
Alternative designations | 1977 CE |
Minor planet category | Main belt (Nysa) |
| Adjectives | Nysian /ˈnɪsiən/ |
| Orbital characteristics | |
| Epoch 2008-05-14 (JD 2454600.5) | |
| Aphelion | 2.78291235 AU (416.3 Gm) |
| Perihelion | 2.06469721 AU (308.9 Gm) |
Semi-major axis | 2.42380478 AU (362.6 Gm) |
| Eccentricity | 0.148158617 ± 5.7499e-08 |
Orbital period (sidereal) | 3.77 yr |
Mean anomaly | 118.743236 ± 2.4281e-05° |
| Inclination | 3.7028885 ± 6.2628e-06° |
Longitude of ascending node | 131.59519 ± 1.0657e-04° |
| 342.52066 ± 1.0904e-04° | |
| Physical characteristics | |
| Dimensions | 113±10 × 67±10 × 65±12 km |
| Mass | (7.72 ± 3.92/1.52)×1017 kg |
Mean density | 3.405 ± 1.727/0.672 g/cm3 |
Synodic rotation period | 6.421417 ± 0.000001 |
Pole ecliptic latitude | +58 ± 3° |
Pole ecliptic longitude | 98 ± 2° |
| 0.44 ± 0.10 (vis.) 0.19 ± 0.06 (rad.) | |
| E | |
| 8.83 to 12.46 | |
| 7.03 | |
| 0.09" to 0.026" | |
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