322 Phaeo

322 Phaeo
Orbital diagram
Discovery [1]
Discovered byA. Borrelly
Discovery siteMarseille Obs.
Discovery date27 November 1891
Designations
(322) Phaeo
Pronunciation/ˈfiːoʊ/[2]
Named after
Φαιώ Phaiō[3]
(Greek mythology)
main-belt [1][4] · (middle)
Phaeo [5][6]
AdjectivesPhaeoian /fiːˈoʊ.iən/
Orbital characteristics [4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc126.48 yr (46,198 d)
Aphelion3.4656 AU
Perihelion2.0960 AU
2.7808 AU
Eccentricity0.2463
4.64 yr (1,694 d)
110.49°
0° 12m 45s / day
Inclination8.0544°
252.36°
115.00°
Physical characteristics
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]
17.5845±0.0001 h[9]
0.089±0.014[7]
Tholen = X [4]
SMASS = X [4]
B–V = 0.719[4]
U–B = 0.230[4]
9.01[4]

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]

  1. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ As in "phæochrome". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference jpldata was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Nesvorny-2014 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference lcdb was invoked but never defined (see the help page).
  10. ^ Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 42. Springer, ISBN 3-540-00238-3.