1318 Nerina
1318 Nerina (/nɪˈraɪnɑː/), provisional designation 1934 FG, is a Phocaea asteroid from the inner regions of the asteroid belt, approximately 13 kilometers (8 miles) in diameter. It was discovered on 24 March 1934, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The possibly metallic X-type asteroid has a notably short rotation period of 2.5 hours. It was named for the flowering plant Nerine, also known as "Guernsey lily" or "Jersey lily".
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 24 March 1934 |
| Designations | |
MPC designation | (1318) Nerina |
| Pronunciation | /nɪˈraɪnɑː/ |
Named after | Nerine (flowering plant) |
Alternative designations | 1934 FG · 1955 FA |
Minor planet category | main-belt · (inner) Phocaea |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.16 yr (30,740 d) |
| Aphelion | 2.7778 AU |
| Perihelion | 1.8368 AU |
Semi-major axis | 2.3073 AU |
| Eccentricity | 0.2039 |
Orbital period (sidereal) | 3.50 yr (1,280 d) |
Mean anomaly | 346.11° |
Mean motion | 0° 16m 52.32s / day |
| Inclination | 24.663° |
Longitude of ascending node | 358.33° |
| 196.24° | |
| Physical characteristics | |
Mean diameter | 10.68±0.72 km 13.02±0.6 km 13.272±0.213 km |
Synodic rotation period | 2.5280±0.0005 h |
| 0.176±0.023 0.1811 0.269 | |
| M · S (assumed) X (S3OS2-TH) Xe (S3OS2-BB) | |
| 11.90 12.20 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.