912 Maritima
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| Discovery[1] | |
|---|---|
| Discovered by |
A. Schwassmann Bergedorf |
| Discovery date | April 27, 1919 |
| Designations | |
| Minor planet category | Main belt[1] |
| Orbital characteristics[1] | |
|
Epoch 2012-Mar-14 (JD 2456000.5) | |
| Aphelion | 3.6815 AU (Q) |
| Perihelion | 2.5823 AU (q) |
| Semi-major axis | 3.1319 AU (a) |
| Eccentricity | 0.17547 |
| Orbital period | 5.54 yr |
| Mean anomaly | 358.43° (M) |
| Inclination | 18.348° |
| Longitude of ascending node | 34.068° |
| Argument of perihelion | 88.481° |
| Physical characteristics | |
| Dimensions | 83.2 ± 2 km (IRAS)[1] |
| Mass | 6.0×1017 kg (assumed) |
| Sidereal rotation period | 1332 hr (55.5 d)[1][2] |
| Albedo | 0.1115[1] |
| Spectral type | C[1] |
| Apparent magnitude | 13.3 to 16.9 |
| Absolute magnitude (H) | 8.40[1] |
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912 Maritima is an asteroid in the asteroid belt. Based on lightcurve studies observing Maritima over a three-month period, Maritima has a rotation period of 1332 hours.[1] Analysis reveals a possible synodic period of 1332 ± 5 hours.[2] Super slow rotators, those with periods longer than a few days, are generally small asteroids.[2] The current paradigm is that slowing of an asteroids spin rate is the result of YORP radiation pressure, which acts on the target as the inverse square of its size and the inverse of its semi-major axis.[2] The rotation period is less than conclusive.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "JPL Small-Body Database Browser: 912 Maritima (1919 FJ)". Jet Propulsion Laboratory. 2011-12-30 last obs. Retrieved 2012-01-31.
- ↑ 2.0 2.1 2.2 2.3 2.4 Higgins, David; Martinez, Luis (2011). "Period Determination of Asteroid 912 Maritima". The Minor Planet Bulletin (ISSN 1052-8091) 38 (2): 78–79. Bibcode:2011MPBu...38...78H.
External links
- Orbital simulation from JPL (Java) / Ephemeris
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