213 Lilaea
Lilaea (minor planet designation: 213 Lilaea) is a large main belt asteroid. It was discovered by German-American astronomer C. H. F. Peters on February 16, 1880, in Clinton, New York and was named after Lilaea, a Naiad in Greek mythology.
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | 16 February 1880 |
| Designations | |
MPC designation | (213) Lilaea |
| Pronunciation | /laɪˈliːə/ |
Named after | Lilaea |
Alternative designations | A880 DA, 1950 TE3 |
Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 136.08 yr (49704 d) |
| Aphelion | 3.1538 AU (471.80 Gm) |
| Perihelion | 2.34961 AU (351.497 Gm) |
Semi-major axis | 2.75172 AU (411.651 Gm) |
| Eccentricity | 0.14613 |
Orbital period (sidereal) | 4.56 yr (1667.3 d) |
Average orbital speed | 17.95 km/s |
Mean anomaly | 199.50° |
Mean motion | 0° 12m 57.312s / day |
| Inclination | 6.8028° |
Longitude of ascending node | 122.113° |
| 162.34° | |
| Physical characteristics | |
| Dimensions | 83.01±2.6 km |
Synodic rotation period | 8.045 h (0.3352 d) |
| 0.0897±0.006 | |
| F | |
| 8.64 | |
Photometric observations of this asteroid in 1986 gave a light curve with a period of 8.045 ± 0.008 hours and a brightness variation of 0.20 ± 0.01 in magnitude. The curve is asymmetrical with two distinct minima. This object has a spectrum that matches an F-type asteroid classification. As with C-type asteroids, its composition is primitive and rich in carbon.
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