+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   54598 Bienor (2000 QC243) Classification: Centaur          SPK-ID: 2054598 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 55 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1991397910027986 3.9303e-07   a 16.45641051186018 4.4346e-06 au q 13.17928436187209 7.6552e-06 au i 20.74508251081972 7.2976e-06 deg node 337.7119063112677 3.1234e-05 deg peri 153.1625305900613 7.8466e-05 deg M 321.6184202330271 5.6852e-05 deg tp 2461800.189265581388 (2028-Jan-29.68926558) 0.0031391 TDB period 24383.78360899634 66.76 0.0098562 2.698e-05 d yr n .01476391054697429 5.9677e-09 deg/d Q 19.73353666184827 5.3177e-06 au   Orbit Determination Parameters    # obs. used (total)      744      data-arc span      24842 days (68.01 yr)      first obs. used      1953-01-12      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41886      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 05:30:31   Additional Information  Earth MOID = 12.2066 au   Jupiter MOID = 7.88144 au   T_jup = 3.576  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.55   n/a E2021B10   diameter diameter 187.500 km 15.500 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)   rotation period rot_per 9.14 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Ortiz, J.L.; Baumont, S.; Gutierrez, P.J.; Roos-Serote, M. (2002) Astron. Astrophys. 388, 661-666.] [Ortiz, J.L.; Gutierrez, P.J.; Casanova, V.; Sota, A. (2003) Astron. Astrophys. 407, 1149-1155.] [Rabinowitz, D.L.; Schaefer, B.E.; Tourtellotte, S.W. (2007) Astron. J. 133, 26-43.] [Fernandez-Valenzuela, E.; Ortiz, J.L.; Duffard, R.; Morales, N.; Santoz-Sanz, P. (2017) Mon. Not. Royal Ast. Soc. 466, 4147-4158.] geometric albedo albedo 0.050   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)   54598 Bienor           Discovered 2000 Aug. 27 by the Deep Ecliptic Survey. Bienor, one of the centaurs who tried to kidnap the bride Hippodame and other women at the wedding of Pirithous, was overcome by the hero Theseus, who jumped on his back, smashed his face and pounded his temples. The name was suggested by E. K. Elliot. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040107/MPCPages.arc Last Updated: 2004-01-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 14:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin