Global Information1146 Biarmia information
| Discovery[1] | |
|---|---|
| Discovered by | G. Neujmin |
| Discovery site | Simeiz Obs. |
| Discovery date | 7 May 1929 |
| Designations | |
MPC designation | (1146) Biarmia |
| Pronunciation | /biˈɑːrmiə/[2] |
Named after | Bjarmaland (Permia) (territory in Norse sagas)[3] |
Alternative designations | 1929 JF · 1941 WD1 A913 KA |
Minor planet category | main-belt · (outer)[4] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.88 yr (32,098 days) |
| Aphelion | 3.8212 AU |
| Perihelion | 2.2678 AU |
Semi-major axis | 3.0445 AU |
| Eccentricity | 0.2551 |
Orbital period (sidereal) | 5.31 yr (1,940 days) |
Mean anomaly | 184.40° |
Mean motion | 0° 11m 7.8s / day |
| Inclination | 17.067° |
Longitude of ascending node | 213.89° |
Argument of perihelion | 63.801° |
| Physical characteristics | |
| Dimensions | 21.59±1.52 km[5] 31.14±1.2 km[6] 32.39±0.97 km[7] 32.925±0.148 km[8] 38.567±0.735 km[9] |
Synodic rotation period | 5.33±0.01 h[10] 5.468±0.004 h[11] 5.4700±0.0002 h[12][a] 11.514±0.004 h[13] 21.6 h (retracted)[b] |
Geometric albedo | 0.1436±0.0147[9] 0.196±0.024[8] 0.219±0.015[7] 0.2190±0.018[6] 0.455±0.096[5] |
Spectral type | Tholen = X[1][4] · M[9][14][15] B–V = 0.690[1] U–B = 0.247[1] |
Absolute magnitude (H) | 9.80[1][4][5][6][7][9] · 9.99±0.33[16] |
1146 Biarmia, provisional designation 1929 JF, is a metallic background asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 7 May 1929, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.[17] The asteroid was named for the Bjarmaland mentioned in Norse sagas.
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