Back 4959 Niinoama (كويكب) ARZ (4959) Нииноама CE 4959 Niinoama Esperanto (4959) Niinoama Spanish سیارک ۴۹۵۹ Persian (4959) Niinoama French 4959 Niinoama Hungarian (4959) Նիինոամա Armenian 4959 Niinoama Italian 二位尼 (小惑星) Japanese

4959 Niinoama

4959 Niinoama
Shape model of Niinoama from its lightcurve
Discovery [1]
Discovered byA. Natori
T. Urata
Discovery siteJCPM Yakiimo Stn.
Discovery date15 August 1991
Designations
(4959) Niinoama
Named after
Taira no Tokiko
(Imperial House of Japan)[2]
1991 PA1 · 1958 TZ
1966 CB · 1968 MC
1972 EB · 1979 OU13
1980 TG1 · 1980 TS8
1984 OO · 1985 OD
1986 VS1 · 1989 FE1
main-belt · (outer) [3]
background
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc67.15 yr (24,528 days)
Aphelion3.1759 AU
Perihelion3.1272 AU
3.1516 AU
Eccentricity0.0077
5.59 yr (2,044 days)
129.49°
0° 10m 34.32s / day
Inclination8.9913°
128.79°
320.53°
Physical characteristics
26.50±0.73 km[4]
27.96±2.4 km[5]
35.842±0.117 km[6]
36.21±0.80 km[7]
42.507±0.576 km[8]
4.73±0.01 h[9]
0.0468±0.0109[8]
0.066±0.003[7]
0.079±0.010[6]
0.1081 (derived)[3]
0.1082±0.021[5]
0.120±0.014[4]
C (assumed)[3]
10.8[3][4][5][7][8] · 10.9[1]

4959 Niinoama (prov. designation: 1991 PA1) is a dark background asteroid from the outer regions of the asteroid belt. It was discovered by Japanese astronomers Akira Natori and Takeshi Urata at JCPM Yakiimo Station on 15 August 1991.[10] The presumed carbonaceous C-type asteroid has a rotation period of 4.7 hours and measures approximately 36 kilometers (22 miles) in diameter. It was named after Taira no Tokiko (1126–1185) of the Imperial House of Japan during the Heian period.

  1. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Carbo-2009a was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference MPC-Niinoama was invoked but never defined (see the help page).
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