771 Libera

771 Libera
Modelled shape of Libera from its lightcurve
Discovery [1]
Discovered byJ. Rheden
Discovery siteVienna Observatory
Discovery date21 November 1913
Designations
(771) Libera
PronunciationClassically /ˈlɪbərə/[2]
Named after
friend of discoverer[3]
1913 TO · 1958 HA
main-belt · (middle) [4]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc101.75 yr (37166 d)
Aphelion3.3092 AU (495.05 Gm)
Perihelion1.9937 AU (298.25 Gm)
2.6514 AU (396.64 Gm)
Eccentricity0.24808
4.32 yr (1576.9 d)
268.14°
0° 13m 41.844s / day
Inclination14.936°
218.19°
227.36°
Earth MOID1.03684 AU (155.109 Gm)
Jupiter MOID2.11238 AU (316.008 Gm)
TJupiter3.299
Physical characteristics
Dimensions29.38±1.1 km (IRAS:6)[1][5]
28.91±0.72 km[6]
29.000±1.403 km[7]
29.33 km (derived)[4]
14.69±0.55 km
5.892±0.002 h[8]
5.92 h[9]
5.886±0.001 h[10]
5.89±0.05 h[10]
5.890±0.001 h[11]
5.892 h (0.2455 d)[1]
0.1303±0.010 (IRAS:6)[1] [5]
0.141±0.008[6]
0.1299±0.0158[7]
0.1226 (SIMPS)[4]
B–V = 0.687
U–B = 0.300
X (Tholen), X (SMASS), X [4]
10.49[1]

771 Libera, provisional designation 1913 TO, is a metallic asteroid from the middle region of the asteroid belt, about 29 kilometers in diameter. It was discovered by Austrian astronomer Joseph Rheden at the Vienna Observatory in Austria, on 21 November 1913.[12]

  1. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^ Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference AKARI was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference WISE was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Warner-2000a was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Binzel-1987b was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Marciniak-2009b was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference MPC-Libera was invoked but never defined (see the help page).