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54598 Bienor (2000 QC243)
Classification: Centaur          SPK-ID: 2054598
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989373530629901 4.1481e-07  
a 16.44350758868956 4.4361e-06 au
q 13.17227971392446 8.0272e-06 au
i 20.7445374400756 7.6159e-06 deg
node 337.7284477222506 3.2154e-05 deg
peri 153.3736177989362 7.866e-05 deg
M 318.4731381867455 5.9605e-05 deg
tp 2461809.920411541371
(2028-Feb-08.42041154)		 0.003312 TDB
period 24355.11146262632
66.68		 0.0098558
2.698e-05		 d
yr
n .0147812914160722 5.9815e-09 deg/d
Q 19.71473546345465 5.3186e-06 au
   Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      24775 days (67.83 yr)  
   first obs. used      1953-01-12  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4268  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:54:50  

Additional Information
 Earth MOID = 12.1994 au 
 Jupiter MOID = 7.87311 au 
 T_jup = 3.575 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456840.5 (2014-Jul-02.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2020343540024927 4.1396e-07  
q 13.18357822502293 7.9958e-06 au
tp 2461769.125480667819
(2027-Dec-29.62548067)		 0.0032405 TDB
node 337.8858774324274 3.2075e-05 deg
peri 152.470330694237 7.8265e-05 deg
i 20.75209263147092 7.6315e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      24775 days (67.83 yr)  
   first obs. used      1953-01-12  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4268  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:54:50  

Additional Information
 Jupiter MOID = 7.87311 au 
 T_jup = 3.575 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.713656719282251E-13 -2.965479080685184E-12 -6.318223496925643E-10 -2.657417176917734E-13 1.088133076636988E-11 -1.030549878433681E-13
q -2.965479080685184E-12 6.393226359817582E-11 4.116475131789907E-9 5.142214262624669E-12 -3.976381133201911E-10 2.155849580109481E-12
tp -6.318223496925643E-10 4.116475131789907E-9 1.050105056008206E-5 8.07524253509229E-10 1.414534878842789E-7 4.500077281341166E-10
node -2.657417176917734E-13 5.142214262624669E-12 8.07524253509229E-10 1.028807979309867E-9 -9.856712524606176E-10 1.842624351291714E-10
peri 1.088133076636988E-11 -3.976381133201911E-10 1.414534878842789E-7 -9.856712524606176E-10 6.125363490307987E-9 -1.807262487950806E-10
i -1.030549878433681E-13 2.155849580109481E-12 4.500077281341166E-10 1.842624351291714E-10 -1.807262487950806E-10 5.823951525922378E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.5   n/a MPO240621  
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.arcLast Updated: 2004-01-07
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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