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JPL Small-Body Database Browser
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52872 Okyrhoe (1998 SG35)
Classification: Centaur          SPK-ID: 2052872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3033204626574377 1.4695e-07  
a 8.371852458481325 1.1077e-06 au
q 5.832498297474962 7.7225e-07 au
i 15.64521359726637 8.7449e-06 deg
node 173.0728173617621 3.17e-05 deg
peri 337.8278663544112 3.5447e-05 deg
M 184.2080890496907 4.5329e-05 deg
tp 2463320.931881509733
(2032-Mar-29.43188151)
0.001955 TDB
period 8847.707889034511
24.22
0.001756
4.808e-06
d
yr
n .04068850424483039 8.0753e-09 deg/d
Q 10.91120661948769 1.4437e-06 au
  Orbit Determination Parameters
   # obs. used (total)      537  
   data-arc span      7279 days (19.93 yr)  
   first obs. used      1998-09-13  
   last obs. used      2018-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5184  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:04:07  

Additional Information
 Earth MOID = 4.84901 au 
 Jupiter MOID = .502989 au 
 T_jup = 2.949 
[ 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 10.8   n/a MPO263768  
diameter diameter 36.000 km 1.200 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  
rotation period rot_per 9.72 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.058   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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