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52872 Okyrhoe (1998 SG35)
Classification: Centaur          SPK-ID: 2052872
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3063972682272846 2.8793e-07  
a 8.351301933253275 2.6489e-06 au
q 5.79248583476323 8.0877e-07 au
i 15.66535375466712 1.0208e-05 deg
node 173.0259048357945 3.1906e-05 deg
peri 337.8658530024314 3.7782e-05 deg
M 127.0072497436036 5.78e-05 deg
tp 2454490.533463016655
(2008-Jan-25.03346302)
0.00036406 JED
period 8815.149966432442
24.13
0.0041941
1.148e-05
d
yr
n .04083878338665346 1.943e-08 deg/d
Q 10.91011803174332 3.4605e-06 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      5393 days (14.77 yr)  
   first obs. used      1998-09-13  
   last obs. used      2013-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52886  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 08:27:10  

Additional Information
 Earth MOID = 4.80792 au 
 Jupiter MOID = .472901 au 
 T_jup = 2.945 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.8 mag n/a MPO263768  
rotation period rot_per 9.72 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Thirouin, A.; Ortiz, J.L.; Duffard, R.; Santos-Sanz, P.; et al. (2010) Astron. Astrophys. 522, A93.]

52872 Okyrhoe           Discovered 1998 Sept. 19 by Spacewatch at Kitt Peak.
Okyrhoe was the daughter of Chiron and Chariklo. The name means "swift running" or "fast flowing". A prophet, she was changed into a mare by the gods as punishment for revealing their plans to humankind.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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