+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   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 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 47 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3065250946871184 4.3824e-07   a 8.336094362362775 4.5635e-06 AU q 5.780872248618771 9.4358e-07 AU i 15.6589643552908 1.3806e-05 deg node 173.1110378159996 3.6412e-05 deg peri 337.4480889064463 5.6617e-05 deg M 78.39280509210073 5.1619e-05 deg tp 2454486.173267339586 (2008-Jan-20.67326734) 0.00063927 JED period 8791.082586572631 24.07 0.0072188 1.976e-05 d yr n .04095058787752246 3.3627e-08 deg/d Q 10.89131647610678 5.9623e-06 AU   Orbit Determination Parameters    # obs. used (total)      495      data-arc span      5031 days (13.77 yr)      first obs. used      1998-09-13      last obs. used      2012-06-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .55558      data source      ORB      producer      Otto Matic      solution date      2012-Jul-09 15:07:07   Additional Information  Earth MOID = 4.79747 AU   T_jup = 2.944  [ 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 10.776 mag .4929 47 autocmod 2.5b rotation period rot_per 9.72 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) [Result based on less than full coverage, so that the period may be wrong by 30 percent or so.] 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.arc Last Updated: 2005-04-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 04:30 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin