323 Brucia
Brucia (minor planet designation: 323 Brucia) is a stony Phocaea asteroid and former Mars-crosser from the inner regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was the first asteroid to be discovered by the use of astrophotography.
Orbital diagram of Brucia | |
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 22 December 1891 |
| Designations | |
MPC designation | (323) Brucia |
| Pronunciation | /ˈbruːsiə, ˈbruːʃə/ |
Named after | Catherine Wolfe Bruce (American philanthropist) |
Alternative designations | 1934 JC · A923 JA |
Minor planet category | main-belt · (inner) Phocaea · ex-Mars-crosser |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 125.35 yr (45,785 days) |
| Aphelion | 3.0979 AU |
| Perihelion | 1.6662 AU |
Semi-major axis | 2.3820 AU |
| Eccentricity | 0.3005 |
Orbital period (sidereal) | 3.68 yr (1,343 days) |
Mean anomaly | 106.64° |
Mean motion | 0° 16m 5.16s / day |
| Inclination | 24.230° |
Longitude of ascending node | 97.398° |
| 291.26° | |
| Mars MOID | 0.3464 AU |
| Physical characteristics | |
| Dimensions | 27.714±0.300 km 29.23±2.92 km 32.395±0.317 km 35.82±1.7 km 37.29±0.76 km |
Synodic rotation period | 9.46 h 9.4602±0.0001 h 9.463±0.005 h 10 h |
| 0.165±0.007 0.1765±0.018 0.2174±0.0421 0.265±0.053 0.295±0.046 | |
| Tholen = S B–V = 0.893 U–B = 0.480 | |
| 9.09±0.58 · 9.73 | |
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