Discovery[1] | |
---|---|
Discovered by | Max Wolf |
Discovery date | December 22, 1891 |
Designations | |
Named after | Catherine Wolfe Bruce |
Alternative names | 1923 JA; 1934 JC[1] |
Minor planet category | Main belt (Mars-crosser) |
Orbital characteristics[1] | |
Epoch 30 January 2005 (JD 2453400.5) | |
Aphelion | 463.848 Gm (3.101 AU) |
Perihelion | 248.71 Gm (1.663 AU) |
Semi-major axis | 356.279 Gm (2.382 AU) |
Eccentricity | 0.302 |
Orbital period | 1342.443 d (3.68 a) |
Average orbital speed | 18.9 km/s |
Mean anomaly | 313.443° |
Inclination | 24.227° |
Longitude of ascending node | 97.463° |
Argument of perihelion | 291.344° |
Physical characteristics | |
Dimensions | 35.8 ± 1.7 km (IRAS)[1] |
Mass | 4.8×1016 kg (assumed) |
Mean density | 2? g/cm³ |
Equatorial surface gravity | 0.010 m/s² |
Escape velocity | 0.019 km/s |
Rotation period | 0.394 d (9.46 h)[1] |
Albedo | 0.1765[1] |
Temperature | ~176 K |
Spectral type | S[1] |
Apparent magnitude | 11.2 to 15.8 |
Absolute magnitude (H) | 9.73[1] |
323 Brucia (pron.: /ˈbruːsiə/ BREW-see-ə or /ˈbruːʃə/ BREW-shə) was the first asteroid to be discovered by the use of astrophotography.[2] It was also the first of over 200 asteroids discovered by Max Wolf, a pioneer in that method of finding astronomical objects. Discovered in 1891, it was named in honour of Catherine Wolfe Bruce, a noted patroness of the science of astronomy, who had donated $10,000 for the construction of the telescope used by Wolf.
It is also a Mars-crosser asteroid.[1]
References
- ^ a b c d e f g h i "JPL Small-Body Database Browser: 323 Brucia". Jet Propulsion Laboratory. 2011-06-24 last obs. Retrieved 2005-01-30.
- ^ Campbell, W. W. (1892). "Discovery of Asteroids by Photography". Publications of the Astronomical Society of the Pacific 4 (26): 264. Bibcode:1892PASP....4..264C. doi:10.1086/120521.
External links
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