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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03939263669940925 4.9496e-08  
a 5.147520543518547 1.1289e-07 au
q 4.944746136844975 3.1433e-07 au
i 20.31622180096392 6.1568e-06 deg
node 198.9163253500971 1.4096e-05 deg
peri 88.30318309302176 0.00010037 deg
M 258.7507830080052 0.00010409 deg
tp 2459800.233352047817
(2022-Aug-08.73335205)
0.0012511 TDB
period 4265.75157387501
11.68
0.00014032
3.842e-07
d
yr
n .08439310019945112 2.7761e-09 deg/d
Q 5.350294950192119 1.1733e-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 = 4.0061 au 
 Jupiter MOID = .198734 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 11.5   n/a MPO436008  
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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