Global Information456 Abnoba information
| Discovery [1] | |
|---|---|
| Discovered by | M. F. Wolf A. Schwassmann |
| Discovery site | Heidelberg Obs. |
| Discovery date | 4 June 1900 |
| Designations | |
MPC designation | (456) Abnoba |
| Pronunciation | /ˈæbnəbə/[2][3] |
Named after | Abnoba [4] (Celtic mythology) |
Alternative designations | 1900 FH · 1952 YF |
Minor planet category | main-belt · (middle) background [5] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.07 yr (42,761 days) |
| Aphelion | 3.2873 AU |
| Perihelion | 2.2894 AU |
Semi-major axis | 2.7884 AU |
| Eccentricity | 0.1789 |
Orbital period (sidereal) | 4.66 yr (1,701 days) |
Mean anomaly | 86.313° |
Mean motion | 0° 12m 42.12s / day |
| Inclination | 14.439° |
Longitude of ascending node | 229.21° |
Argument of perihelion | 6.6794° |
| Physical characteristics | |
| Dimensions | 37.64±1.44 km[6] 37.713±0.222 km[7] 39.76±3.6 km[8] 39.94 km (derived)[9] 42.65±0.65 km[10] 50.495±1.215 km[11] |
Synodic rotation period | 18±1 h[12] 18.2026±0.0002 h[12] 18.273±0.005 h[13][a] 18.281±0.001 h[14] |
Geometric albedo | 0.1467±0.0261[11] 0.204±0.008[10] 0.2335±0.048[8] 0.2537 (derived)[9] 0.286±0.033[6] |
Spectral type | SMASS = S [1][9] S [15] |
Absolute magnitude (H) | 9.10[6][9] · 9.20[1][8][10][11] |
Abnoba (minor planet designation: 456 Abnoba), provisional designation 1900 FH, is a stony background asteroid from the central regions of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 4 June 1900, by astronomers Max Wolf and Arnold Schwassmann at the Heidelberg-Königstuhl State Observatory in southwest Germany.[16] The asteroid was named after the Celtic deity Abnoba.[4]
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