Astronomy:322 Phaeo
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Short description: Main-belt asteroid
 Orbital diagram | |
| Discovery [1] | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery site | Marseille Obs. |
| Discovery date | 27 November 1891 |
| Designations | |
| (322) Phaeo | |
| Pronunciation | /ˈfiːoʊ/[6] |
| Named after | Φαιώ Phaiō[2] (Greek mythology) |
| Minor planet category | main-belt [1][3] · (middle) Phaeo [4][5] |
| Adjectives | Phaeoian /fiːˈoʊ.iən/ |
| Orbital characteristics [3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 126.48 yr (46,198 d) |
| |{{{apsis}}}|helion}} | 3.4656 AU |
| |{{{apsis}}}|helion}} | 2.0960 AU |
| 2.7808 AU | |
| Eccentricity | 0.2463 |
| Orbital period | 4.64 yr (1,694 d) |
| Mean anomaly | 110.49° |
| Mean motion | 0° 12m 45s / day |
| Inclination | 8.0544° |
| Longitude of ascending node | 252.36° |
| 115.00° | |
| Physical characteristics | |
| Mean diameter | 69.855±0.320 km[7] 71.88 ± 4.32 km[8] |
| Mass | (1.86 ± 0.04) × 1018 kg[8] |
| Mean density | 9.56 ± 1.73 g/cm3[8] |
| Rotation period | 17.5845±0.0001 h[9] |
| Geometric albedo | 0.089±0.014[7] |
| Tholen = X [3] SMASS = X [3] B–V = 0.719[3] U–B = 0.230[3] | |
| Absolute magnitude (H) | 9.01[3] |
Phaeo (minor planet designation: 322 Phaeo) is an asteroid from the central regions of the asteroid belt, approximately 70 kilometers (43 miles) in diameter. It was discovered on 27 November 1891, by French astronomer Alphonse Borrelly at the Marseille Observatory in southern France.[1] The presumably metallic X-type asteroid is the principal body of the Phaeo family and has a rotation period of 17.6 hours. It was named for the Greek mythological figure Phaeo, one of the Hyades or nymphs. Several other asteroids were named for other of the Hyades – 106 Dione, 158 Koronis, 217 Eudora, and 308 Polyxo.[10]
References
- ↑ 1.0 1.1 1.2 "322 Phaeo". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=322.
- ↑ Schmadel, Lutz D. (2007). "(322) Phaeo". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. pp. 42. doi:10.1007/978-3-540-29925-7_323. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "JPL Small-Body Database Browser: 322 Phaeo". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000322.
- ↑ "Asteroid 322 Phaeo". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=322+Phaeo.
- ↑ 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.
- ↑ As in phæochrome (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=ph%C3%A6ochrome (Subscription or UK public library membership required.)
- ↑ 7.0 7.1 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.
- ↑ 8.0 8.1 8.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C See Table 1.
- ↑ "LCDB Data for (322) Phaeo". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=322%7CPhaeo.
- ↑ Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 42. Springer, ISBN:3-540-00238-3.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 322 Phaeo at AstDyS-2, Asteroids—Dynamic Site
- 322 Phaeo at the JPL Small-Body Database
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