188 Menippe
Menippe (minor planet designation: 188 Menippe) is a main belt asteroid. The object has a bright surface and rocky composition. It was discovered by C. H. F. Peters on June 18, 1878, in Clinton, New York, and named after Menippe, one of the daughters of Orion in Greek mythology.
A three-dimensional model of 188 Menippe based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters, 1878 |
| Discovery date | 18 June 1878 |
| Designations | |
MPC designation | (188) Menippe |
| Pronunciation | /mɛˈnɪpiː/ |
Alternative designations | A878 MA; 1897 QA; 1948 WQ |
Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 100.84 yr (36833 d) |
| Aphelion | 3.2542 AU (486.82 Gm) |
| Perihelion | 2.2691 AU (339.45 Gm) |
Semi-major axis | 2.7617 AU (413.14 Gm) |
| Eccentricity | 0.17835 |
Orbital period (sidereal) | 4.59 yr (1676.3 d) |
Mean anomaly | 346.69° |
Mean motion | 0° 12m 53.1s / day |
| Inclination | 11.703° |
Longitude of ascending node | 240.91° |
| 70.177° | |
| Earth MOID | 1.286 AU (192.4 Gm) |
| Jupiter MOID | 2.07085 AU (309.795 Gm) |
| TJupiter | 3.288 |
| Physical characteristics | |
Mean radius | 19.305±0.5 km |
Synodic rotation period | 11.98 h (0.499 d) |
| 0.2431±0.013 | |
| S | |
| 9.22 | |
Photometric observations during 2010 showed a synodic rotation period of 11.98 ± 0.02 hours and a brightness variation of 0.28 ± 0.02 in magnitude. Because the rotation period is close to twelve hours, observations were needed at two widely separated observatories in order to build a light curve for the complete rotation.
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