1181 Lilith
1181 Lilith (prov. designation: 1927 CQ) is a metallic asteroid from the middle region of the asteroid belt, approximately 23 kilometers (14 miles) in diameter. It was discovered on 11 February 1927, by Russian–French astronomer Benjamin Jekhowsky at Algiers Observatory in Algeria, Northern Africa, and named after French composer Lili Boulanger.
| Discovery | |
|---|---|
| Discovered by | B. Jekhovsky |
| Discovery site | Algiers Obs. |
| Discovery date | 11 February 1927 |
| Designations | |
MPC designation | (1181) Lilith |
Named after | Lili Boulanger (French composer) |
Alternative designations | 1927 CQ · 1925 QF 1943 WC · 1953 CA 1964 PG · A914 BA |
Minor planet category | main-belt · (middle) background |
| Symbol | (astrological) |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 89.50 yr (32,689 d) |
| Aphelion | 3.1851 AU |
| Perihelion | 2.1457 AU |
Semi-major axis | 2.6654 AU |
| Eccentricity | 0.1950 |
Orbital period (sidereal) | 4.35 yr (1,589 d) |
Mean anomaly | 219.56° |
Mean motion | 0° 13m 35.4s / day |
| Inclination | 5.6012° |
Longitude of ascending node | 260.70° |
| 156.05° | |
| Physical characteristics | |
Mean diameter | 20.492±0.276 km |
Synodic rotation period | 15.04±0.01 h |
| 0.106±0.011 | |
| SMASS = X | |
| 11.3 | |
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