208 Lacrimosa
Lacrimosa (minor planet designation: 208 Lacrimosa) is a main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on October 21, 1879, in Pola. The name derives from Our Lady of Sorrows, a title given to Mary, the mother of Jesus. It is orbiting the Sun at a distance of 2.89320 AU with a period of 4.92 yr and an eccentricity (ovalness) of 0.013. The orbital plane is inclined at an angle of 1.7° to the plane of the ecliptic.
A three-dimensional model of 208 Lacrimosa based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 21 October 1879 |
| Designations | |
MPC designation | (208) Lacrimosa |
| Pronunciation | /lækrɪˈmoʊsə/ |
Named after | Our Lady of Sorrows (lacrimōsa) |
Alternative designations | A879 UB |
Minor planet category | Main belt (Koronis) |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.12 yr (42,049 d) |
| Aphelion | 2.9309 AU (438.46 Gm) |
| Perihelion | 2.85551 AU (427.178 Gm) |
Semi-major axis | 2.89320 AU (432.817 Gm) |
| Eccentricity | 0.013028 |
Orbital period (sidereal) | 4.92 yr (1,797.5 d) |
Average orbital speed | 17.51 km/s |
Mean anomaly | 209.78° |
Mean motion | 0° 12m 1.008s / day |
| Inclination | 1.7458° |
Longitude of ascending node | 4.2626° |
| 108.363° | |
| Physical characteristics | |
| Dimensions | 41.33±1.7 km |
Synodic rotation period | 14.085734 h (0.5869056 d) |
| 0.2696±0.023 | |
| S | |
| 8.96 | |
During 2003, the asteroid was observed occulting a star. The resulting chords provided a cross-section diameter estimate of 44.3 km. 10μ radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 42 km for this asteroid. It is classified as an S-type asteroid and is one of the largest members of the Koronis asteroid family. Hence it is probably a piece of the original asteroid that was shattered in an ancient impact that created the family.