322 Phaeo

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322 Phaeo
Discovery [1]
Discovered by A. Borrelly
Discovery site Marseille Obs.
Discovery date 27 November 1891
Designations
MPC designation (322) Phaeo
Named after
Phaeo[2]
(Greek mythology)
main-belt[1][3] · (middle)
Phaeo[4][5]
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 126.48 yr (46,198 d)
Aphelion 3.4656 AU
Perihelion 2.0960 AU
2.7808 AU
Eccentricity 0.2463
4.64 yr (1,694 d)
110.49°
0° 12m 45s / day
Inclination 8.0544°
252.36°
115.00°
Physical characteristics
Mean diameter
69.855±0.320 km[6]
71.88 ± 4.32 km[7]
Mass (1.86 ± 0.04) × 1018 kg[7]
Mean density
9.56 ± 1.73 g/cm3[7]
17.5845±0.0001 h[8]
0.089±0.014[6]
Tholen = X[3]
SMASS = X[3]
B–V = 0.719[3]
U–B = 0.230[3]
9.01[3]

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.[9]

References[edit]

  1. ^ a b c "322 Phaeo". Minor Planet Center. Retrieved 12 July 2018. 
  2. ^ Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (322) Phaeo. Springer Berlin Heidelberg. ISBN 978-3-540-00238-3. Retrieved 12 July 2018. 
  3. ^ a b c d e f g "JPL Small-Body Database Browser: 322 Phaeo" (2018-05-25 last obs.). Jet Propulsion Laboratory. Retrieved 12 July 2018. 
  4. ^ "Asteroid 322 Phaeo". Small Bodies Data Ferret. Retrieved 12 July 2018. 
  5. ^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families" (PDF). Asteroids IV: 297–321. arXiv:1502.01628Freely accessible. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. Retrieved 12 July 2018. 
  6. ^ a b 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" (PDF). The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 12 July 2018. 
  7. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336Freely accessible, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009  See Table 1.
  8. ^ "LCDB Data for (322) Phaeo". Asteroid Lightcurve Database (LCDB). Retrieved 12 July 2018. 
  9. ^ Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 42. Springer, ISBN 3-540-00238-3.

External links[edit]