Global Information1154 Astronomia information
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 8 February 1927 |
| Designations | |
MPC designation | (1154) Astronomia |
| Pronunciation | /æstroʊˈnoʊmiə/ |
Named after | astronomy[2] (a natural science) |
Alternative designations | 1927 CB · A911 RA |
Minor planet category | main-belt · (outer)[1][3] background[4] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 105.83 yr (38,656 days) |
| Aphelion | 3.6308 AU |
| Perihelion | 3.1511 AU |
Semi-major axis | 3.3910 AU |
| Eccentricity | 0.0707 |
Orbital period (sidereal) | 6.24 yr (2,281 days) |
Mean anomaly | 22.461° |
Mean motion | 0° 9m 28.08s / day |
| Inclination | 4.5323° |
Longitude of ascending node | 82.512° |
Argument of perihelion | 203.85° |
| Physical characteristics | |
| Dimensions | 55.4±5.5 km[5] 55.715±0.500 km[6] 57.253±0.339 km[7] 59±6 km[8] 59.68±18.01 km[9] 60.10±16.38 km[10] 61.08 km (SIMPS)[3][11] 64.20±1.11 km[12] |
Synodic rotation period | 18.1154±0.0139 h[a] |
Geometric albedo | 0.028±0.001[12] 0.0296 (SIMPS)[3][11] 0.03±0.01[8] 0.03±0.02[9] 0.03±0.03[10] 0.0337±0.0060[7] 0.036±0.008[6] 0.04±0.01[5] |
Spectral type | Tholen = FXU:[1][3] B–V = 0.658[1] U–B = 0.229[1] |
Absolute magnitude (H) | 10.46[10] · 10.51[1][3][5][7][8][9][12] · 10.80±0.10[13] |
1154 Astronomia, provisional designation 1927 CB, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 8 February 1927.[14] The asteroid was named for the natural science of astronomy.
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