Astronomy:323 Brucia

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Short description: Phocaea asteroid
323 Brucia
323 Brucia.gif
Orbital diagram of Brucia
Discovery [1]
Discovered byM. F. Wolf
Discovery siteHeidelberg Obs.
Discovery date22 December 1891
Designations
(323) Brucia
Pronunciation/ˈbruːsiə, ˈbruːʃə/
Named afterCatherine Wolfe Bruce [2]
(American philanthropist)
1934 JC · A923 JA
Minor planet categorymain-belt · (inner)
Phocaea [3] · ex-Mars-crosser[4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc125.35 yr (45,785 days)
|{{{apsis}}}|helion}}3.0979 AU
|{{{apsis}}}|helion}}1.6662 AU
2.3820 AU
Eccentricity0.3005
Orbital period3.68 yr (1,343 days)
Mean anomaly106.64°
Mean motion0° 16m 5.16s / day
Inclination24.230°
Longitude of ascending node97.398°
291.26°
Mars MOID0.3464 AU
Physical characteristics
Dimensions27.714±0.300 km[5]
29.23±2.92 km[6]
32.395±0.317 km[7]
35.82±1.7 km[4][8]
37.29±0.76 km[9]
Rotation period9.46 h[10]
9.4602±0.0001 h[11]
9.463±0.005 h[12]
10 h[4]
Geometric albedo0.165±0.007[9]
0.1765±0.018[8]
0.2174±0.0421[7]
0.265±0.053[6]
0.295±0.046[5]
Tholen = S [1][4]
B–V = 0.893[1]
U–B = 0.480[1]
Absolute magnitude (H)9.09±0.58[13] · 9.73[1][4][6][7][8][9]


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.[14]

Description

Brucia was also the first of over 200 asteroids discovered by Max Wolf, a pioneer in that method of finding astronomical objects. Discovered on December 22, 1891, when he was 28 years old, 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.[2][15]

The asteroid is a member of the Phocaea family (701),[3] a large family of stony S-type asteroids with nearly two thousand known members.[16]:23 It was an outer Mars-crossing asteroid with perihelion less than 1.666 AU[1] until July 2017. For comparison, asteroid 4222 Nancita will become a Mars-crosser in June 2019. (6454) 1991 UG1 was a Mars-crossing asteroid until January 2016.[17][needs update]

Brucia has a synodic rotation period of 9.463 hours (as of 1998).[4] According to the survey carried out by the Infrared Astronomical Satellite, Brucia measures 35.82 kilometers in diameter and its surface has an albedo of 0.1765.[8]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "JPL Small-Body Database Browser: 323 Brucia". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000323. 
  2. ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(323) Brucia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 42. doi:10.1007/978-3-540-29925-7_324. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 "Asteroid 323 Brucia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=323+Brucia. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 "LCDB Data for (323) Brucia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=323%7CBrucia. 
  5. ↑ 5.0 5.1 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 1 November 2017. 
  6. ↑ 6.0 6.1 6.2 Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data". Astronomy and Astrophysics 603: 8. doi:10.1051/0004-6361/201629917. Bibcode: 2017A&A...603A..55A. 
  7. ↑ 7.0 7.1 7.2 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  8. ↑ 8.0 8.1 8.2 8.3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  9. ↑ 9.0 9.1 9.2 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  Online catalog
  10. ↑ Schober, H. J.; Erikson, A.; Hahn, G.; Lagerkvist, C. I.; Oja, T. (November 1993). "Physical Studies of Asteroids. Part XXVI. Rotation and Photoelectric Photometry of Asteroids 323, 350, 582, 1021 and 1866". Astronomy and Astrophysics Supplement 101 (3): 507. Bibcode: 1993A&AS..101..499S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1993A&AS..101..499S. Retrieved 1 November 2017. 
  11. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (323) Brucia". Geneva Observatory. http://obswww.unige.ch/~behrend/page1cou.html#000323. 
  12. ↑ Warner, Brian D. (July 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January–March". The Minor Planet Bulletin 41 (3): 144–155. ISSN 1052-8091. PMID 32549049. Bibcode: 2014MPBu...41..144W. 
  13. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 – Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 1 November 2017. 
  14. ↑ Campbell, W. W. (1892). "Discovery of Asteroids by Photography". Publications of the Astronomical Society of the Pacific 4 (26): 264. doi:10.1086/120521. Bibcode: 1892PASP....4..264C. 
  15. ↑ "323 Brucia". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=323. 
  16. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N. 
  17. ↑ Webcite archive of asteroid 6454 with Epoch 2016

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