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JPL Small-Body Database Browser
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34785 (2001 RG87)
Classification: Jupiter Trojan          SPK-ID: 2034785
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03977792914727109 4.9394e-08  
a 5.145668173283777 1.1207e-07 au
q 4.940984149271527 3.1326e-07 au
i 20.32028531113112 6.1579e-06 deg
node 198.9161564651351 1.4094e-05 deg
peri 88.87865852572732 9.9694e-05 deg
M 291.988429810388 0.00010391 deg
tp 2459805.955205385153
(2022-Aug-14.45520539)
0.0012424 TDB
period 4263.449191516296
11.67
0.00013929
3.814e-07
d
yr
n .08443867484485396 2.7586e-09 deg/d
Q 5.350352197296028 1.1653e-07 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      23514 days (64.38 yr)  
   first obs. used      1954-12-22  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:52:34  

Additional Information
 Earth MOID = 4.00314 au 
 Jupiter MOID = .19585 au 
 T_jup = 2.875 
[ 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 11.6   n/a MPO474202  
diameter diameter 29.077 km 0.351 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.058   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

34785 (2001 RG87)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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