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216409 (2008 GM84)
Classification: Jupiter Trojan          SPK-ID: 2216409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03533845412220861 5.0228e-08  
a 5.1041799191849 1.3342e-07 au
q 4.923806091279286 3.4178e-07 au
i 5.855035785444656 5.1725e-06 deg
node 142.2848901909359 6.5342e-05 deg
peri 162.0597610243865 0.00012298 deg
M 293.730569089312 0.00010674 deg
tp 2459975.850603204282
(2023-Jan-31.35060320)
0.0012612 TDB
period 4211.990556094002
11.53
0.00016515
4.522e-07
d
yr
n .08547027710666252 3.3512e-09 deg/d
Q 5.284553747090514 1.3814e-07 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      5911 days (16.18 yr)  
   first obs. used      2004-12-11  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:41  

Additional Information
 Earth MOID = 3.90731 au 
 Jupiter MOID = .0582655 au 
 T_jup = 2.989 
[ 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 13.51   n/a E2021B55  

216409 (2008 GM84)          Discovered 2008-Apr-08 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 2008 GM84 = 2004 XP95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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