155 Scylla
Main-belt asteroid
From Wikipedia, the free encyclopedia
155 Scylla is a main belt asteroid. It was discovered by Austrian astronomer Johann Palisa at the Austrian Naval Observatory on 8 November 1875, and named after the monster Scylla in Greek mythology. Two weeks after its discovery this asteroid became lost and was not recovered for 95 years. It was finally found by Paul Wild of Berne, Switzerland with the aid of an ephemeris created in 1970 by Conrad M. Bardwell at Cincinnati Observatory.[19]
_Scylla.png)
3D convex shape model of 155 Scylla | |
| Discovery[1] | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Austrian Naval Obs. |
| Discovery date | 8 November 1875 |
| Designations | |
| (155) Scylla | |
| Pronunciation | /ˈsɪlə/[2] |
Named after | Scylla (Greek mythology)[3] |
| A875 VE; 1907 TJ; 1930 UN; 1930 XS; 1934 RU; 1939 TK; 1941 HL; 1950 FL; 1950 FN | |
| main-belt[1][4] · (middle) background[5] | |
| Symbol | .svg){kind=small} |
| Orbital characteristics[4] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 142.38 yr (52,004 d) |
| Aphelion | 3.5207 AU |
| Perihelion | 1.9916 AU |
| 2.7562 AU | |
| Eccentricity | 0.2774 |
| 4.58 yr (1,671 d) | |
| 2.9234° | |
| 0° 12m 55.44s / day | |
| Inclination | 11.388° |
| 40.994° | |
| 45.838° | |
| Physical characteristics | |
| 32.90±12.33 km[6] 39.21±0.97 km[7] 39.605±0.198 km[8] 39.88±3.8 km[9] 41.38±11.37 km[10] 45.482±0.215 km[11] | |
| 7.955±0.005 h[12] 7.958±0.002 h[13] 7.95880±0.00005 h[14] 7.9597±0.0001 h[15] 7.960±0.001 h[16] 8.8±0.6 h[17] | |
| 0.0237±0.0022[11] 0.027±0.003[8] 0.03±0.01[10] 0.0309±0.007[9] 0.035±0.002[7] 0.05±0.03[6] | |
| Tholen = XFC[4][18] B–V = 0.688[4] U–B = 0.234[4] | |
| 11.23[6] 11.39[4][18][7][10][11] | |
Photometric observations of this asteroid during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico, gave an asymmetrical, bimodal light curve with a period of 7.9597 ± 0.0001 hours and a brightness variation of 0.46 ± 0.03 in magnitude.[15]
