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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06298645196226355 7.7449e-08  
a 5.144457762084612 1.9101e-07 au
q 4.820426620381176 5.0065e-07 au
i 23.15339695101567 8.2879e-06 deg
node 61.85321399288551 2.2651e-05 deg
peri 21.96956255468504 8.8863e-05 deg
M 263.0604286590288 9.1473e-05 deg
tp 2459748.141989997506
(2022-Jun-17.64199000)
0.001121 TDB
period 4261.944948630954
11.67
0.00023736
6.499e-07
d
yr
n .08446847726544221 4.7043e-09 deg/d
Q 5.468488903788049 2.0304e-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 = 3.84361 au 
 Jupiter MOID = .0620106 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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