Discovery | |
---|---|
Discovered by | DES |
Discovery site | Cerro Tololo Obs. |
Discovery date | 27 August 2000 |
Designations | |
(54598) Bienor | |
Pronunciation | /baɪˈiːnɔːr/ [1] |
Named after | Biēnor |
2000 QC243 | |
Centaur [2] | |
Adjectives | Bienorian /baɪ.ɪˈnɔːriən/ |
Symbol | (astrological) |
Orbital characteristics [2] | |
Epoch 31 May 2020 ( JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 24775 days (67.83 yr) |
Aphelion | 19.715 AU (2.9493 Tm) |
Perihelion | 13.172 AU (1.9705 Tm) |
16.444 AU (2.4600 Tm) | |
Eccentricity | 0.19894 |
66.68 yr (24355 d) | |
Average
orbital speed | 7.26 km/ s |
318.473 ° | |
0° 0m 53.039s / day | |
Inclination | 20.745° |
337.728° | |
153.374° | |
Earth MOID | 12.199 AU (1.8249 Tm) |
Jupiter MOID | 7.873 AU (1.1778 Tm) |
TJupiter | 3.575 |
Physical characteristics | |
Mean diameter | 187.5±15.5
km
[3] 198 km [4] 207±30 km [5] |
9.14 h (0.381 d) [2] | |
0.03–0.05
[5] 0.05±0.019 [3] | |
Temperature | ~ 69 K |
BR
[4] B–V = 0.711±0.059 [6] V–R = 0.476±0.046 [6] | |
~ 19.2 [7] | |
7.5 [2] | |
54598 Bienor /baɪˈiːnɔːr/ is a centaur that grazes the orbit of Uranus. It is named after the mythological centaur Bienor. Its closest approach to the Sun ( perihelion) is 13.2 AU. [2] As of 2020 [update], Bienor is 14.2 AU from the Sun [7] and will reach perihelion in January 2028. [2] It measured approximately 198 kilometers (120 miles) in diameter. [4]
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