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JPL Small-Body Database Browser
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65281 (2002 GM121)
Classification: Jupiter Trojan          SPK-ID: 2065281
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06328494854844541 7.7666e-08  
a 5.147731066939176 1.908e-07 au
q 4.821957171226696 5.0274e-07 au
i 23.15193379028306 8.287e-06 deg
node 61.86077668740467 2.2647e-05 deg
peri 21.43376166277036 8.8287e-05 deg
M 297.3881556968403 9.1961e-05 deg
tp 2459742.452662546467
(2022-Jun-11.95266255)
0.0011145 TDB
period 4266.013267768387
11.68
0.00023717
6.493e-07
d
yr
n .08438792319751062 4.6916e-09 deg/d
Q 5.473504962651656 2.0287e-07 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1997-11-25  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62397  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 05:44:11  

Additional Information
 Earth MOID = 3.84489 au 
 Jupiter MOID = .0667256 au 
 T_jup = 2.836 
[ 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 12.2   n/a MPO453047  
diameter diameter 19.917 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.071   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

65281 (2002 GM121)          Discovered 2002-Apr-10 by NEAT at Palomar
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 GM121 = 1998 XV30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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