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JPL Small-Body Database Browser
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30506 (2000 RO85)
Classification: Jupiter Trojan          SPK-ID: 2030506
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0806768168889877 7.2472e-08  
a 5.126780368794518 1.0383e-07 au
q 4.713168047751226 3.8479e-07 au
i 20.05616649513351 7.5371e-06 deg
node 343.3615073501567 1.4883e-05 deg
peri 11.54415584401638 4.4841e-05 deg
M 206.4873108409887 4.7367e-05 deg
tp 2460408.536837250575
(2024-Apr-08.03683725)
0.00059164 TDB
period 4239.996478310661
11.61
0.0001288
3.526e-07
d
yr
n .084905730898964 2.5792e-09 deg/d
Q 5.54039268983781 1.122e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      23963 days (65.61 yr)  
   first obs. used      1953-10-01  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53831  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:36:40  

Additional Information
 Earth MOID = 3.7087 au 
 Jupiter MOID = .108352 au 
 T_jup = 2.874 
[ 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 11.0   n/a MPO435975  
diameter diameter 34.356 km 0.698 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 7.985 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.060   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

30506 (2000 RO85)          Discovered 2000-Sep-02 by LONEOS at Anderson Mesa
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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