323 Brucia
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323 Brucia
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Discovery[1]
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| Discovered by | Max Wolf |
| Discovery date | December 22, 1891 |
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Designations
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| Named after | Catherine Wolfe Bruce |
| Alternate name(s) | 1923 JA; 1934 JC[1] |
| Minor planet category |
Main belt (Mars-crosser) |
| 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° |
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Physical characteristics
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| 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 (
/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. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=323. 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
- Orbital simulation from JPL (Java) / Ephemeris
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