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295412 (2008 JR28)
Classification: Jupiter Trojan          SPK-ID: 2295412
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05035677046437129 6.7988e-08  
a 5.214005219818581 1.3579e-07 au
q 4.951444755764143 3.98e-07 au
i 12.91935068686554 7.2833e-06 deg
node 212.9325882654459 2.3953e-05 deg
peri 13.76684061235946 6.9661e-05 deg
M 17.5530579522423 6.1035e-05 deg
tp 2458788.465805270929
(2019-Oct-31.96580527)
0.00074151 TDB
period 4348.661658279009
11.91
0.00016988
4.651e-07
d
yr
n .08278409043725665 3.2339e-09 deg/d
Q 5.476565683873019 1.4262e-07 au
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      8887 days (24.33 yr)  
   first obs. used      1996-04-20  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52913  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:49:30  

Additional Information
 Earth MOID = 3.94401 au 
 Jupiter MOID = .481078 au 
 T_jup = 2.947 
[ 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 12.9   n/a MPO437321  

295412 (2008 JR28)          Discovered 2008-May-08 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 2008 JR28 = 2007 EC209 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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