54598 Bienor

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.[3] As of 2015, Bienor is currently 15.8 AU from the Sun[6] and will reach perihelion in January 2028.[3]

54598 Bienor
Discovery
Discovered byDES
Discovery siteCerro Tololo Obs.
Discovery date27 August 2000
Designations
(54598) Bienor
Pronunciation/baɪˈiːnɔːr/[1]
Named after
Biānor[2]
2000 QC243
Centaur [3]
AdjectivesBienorian /baɪ.ɪˈnɔːriən/
Orbital characteristics [3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 1
Observation arc14789 days (40.49 yr)
Aphelion19.802 AU (2.9623 Tm)
Perihelion13.157 AU (1.9683 Tm)
16.480 AU (2.4654 Tm)
Eccentricity0.20164
66.90 yr (24435 d)
7.26 km/s
295.216°
0° 0m 53.039s / day
Inclination20.754°
337.895°
153.132°
Earth MOID12.1841 AU (1.82272 Tm)
Jupiter MOID7.8707 AU (1.17744 Tm)
TJupiter3.576
Physical characteristics
Dimensions207±30 km[4]
9.14 h (0.381 d)
9.14 h[3]
0.03–0.05[4]
Temperature~ 69 K
B–V = 0.711±0.059[5]
V–R = 0.476±0.046[5]
~ 20.1[6]
7.5[3]

    See also

    References
    1. Noah Webster (1884) A Practical Dictionary of the English Language
    2. perhaps confused with the Trojan warrior Βιήνωρ Biēnōr
    3. "JPL Small-Body Database Browser: 54598 Bienor (2000 QC243)" (2011-10-19 last obs). Jet Propulsion Laboratory. Retrieved 12 April 2016.
    4. Stansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope (2007) Preprint arXiv
    5. Hainaut, O. R.; Boehnhardt, H.; Protopapa, S. (October 2012). "Colours of minor bodies in the outer solar system. II. A statistical analysis revisited". Astronomy and Astrophysics. 546: 20. arXiv:1209.1896. Bibcode:2012A&A...546A.115H. doi:10.1051/0004-6361/201219566. Retrieved 26 September 2019.
    6. "AstDyS (54598) Bienor Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 16 January 2012.


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