Astronomy:54598 Bienor
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| Discovery | |
|---|---|
| Discovered by | DES |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 27 August 2000 |
| Designations | |
| (54598) Bienor | |
| Pronunciation | /baɪˈiːnɔːr/[2] |
| Named after | Biēnor |
| 2000 QC243 | |
| Minor planet category | Centaur [1] |
| Adjectives | Bienorian /baɪ.ɪˈnɔːriən/ |
| Orbital characteristics [1] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24775 days (67.83 yr) |
| |{{{apsis}}}|helion}} | 19.715 astronomical unit|AU (2.9493 Tm) |
| |{{{apsis}}}|helion}} | 13.172 AU (1.9705 Tm) |
| 16.444 AU (2.4600 Tm) | |
| Eccentricity | 0.19894 |
| Orbital period | 66.68 yr (24355 d) |
| Average Orbital speed | 7.26 km/s |
| Mean anomaly | 318.473° |
| Mean motion | 0° 0m 53.039s / day |
| Inclination | 20.745° |
| Longitude of ascending node | 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] |
| Sidereal rotation period | 9.14 h (0.381 d)[1] |
| Geometric albedo | 0.03–0.05[5] 0.05±0.019[3] |
| Physics | ~ 69 K |
| BR[4] B–V = 0.711±0.059[6] V–R = 0.476±0.046[6] | |
| Apparent magnitude | ~ 19.2[7] |
| Absolute magnitude (H) | 7.5[1] |
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.[1] (As of 2020), Bienor is 14.2 AU from the Sun[7] and will reach perihelion in January 2028.[1] It measured approximately 198 kilometers (120 miles) in diameter.[4]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 54598 Bienor (2000 QC243)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Bienor.
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 3.0 3.1 Bauer, J. M.; Grav, T.; Blauvelt, E.; Mainzer, A. K. (August 2013). "Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations". The Astrophysical Journal 773 (1): 11. doi:10.1088/0004-637X/773/1/22. Bibcode: 2013ApJ...773...22B.
- ↑ 4.0 4.1 4.2 Johnston, Wm. Robert (18 August 2020). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 12 August 2021.
- ↑ 5.0 5.1 Stansberry, J.; Grundy, W.; Brown, M.; Cruikshank, D. (20 February 2007). Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope.
- ↑ 6.0 6.1 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. doi:10.1051/0004-6361/201219566. Bibcode: 2012A&A...546A.115H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A.115H. Retrieved 26 September 2019.
- ↑ 7.0 7.1 "AstDyS (54598) Bienor Ephemerides". Department of Mathematics, University of Pisa, Italy. https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=Bienor.
External links
- 54598 Bienor at AstDyS-2, Asteroids—Dynamic Site
- 54598 Bienor at the JPL Small-Body Database
- 1953 precovery image by the Palomar Observatory Sky Survey (Bienor is the object at the centre).
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