9971 Ishihara

9971 Ishihara
Shape model of Ishihara from its lightcurve
Discovery [1]
Discovered byK. Endate
K. Watanabe
Discovery siteKitami Observatory
Discovery date16 April 1993
Designations
(9971) Ishihara
Named after
Takahiro Ishihara
(Japanese astronomer)[2]
1993 HS · 1991 YC2
1996 EU1
main-belt [1][3] · Flora [4]
Orbital characteristics [3]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc24.91 yr (9,097 days)
Aphelion2.4465 AU
Perihelion1.9164 AU
2.1814 AU
Eccentricity0.1215
3.22 yr (1,177 days)
158.69°
0° 18m 21.24s / day
Inclination2.7482°
20.550°
246.01°
Physical characteristics
Dimensions4.986±0.053 km[5]
5.012±0.069 km[6]
6.715±0.0036 h[7]
6.71574±0.00001 h[8]
(42.0°, 76.0°) (λ1/β1)[8]
0.2328±0.0281[6]
0.235±0.027[5]
S (assumed)[4]
13.7[6] · 13.9[3] · 13.852±0.006 (R)[7] · 14.3[4]

9971 Ishihara (prov. designation: 1993 HS) is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3.1 miles) in diameter. It was discovered by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory on 16 April 1993,[1] and named after Takahiro Ishihara, president of the astronomical society at Hiroshima.[2]

  1. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Waszczak-2015 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Durech-2016 was invoked but never defined (see the help page).