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295558 (2008 SM55)
Classification: Jupiter Trojan          SPK-ID: 2295558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09063468753413871 4.9781e-08  
a 5.154247039918918 1.3192e-07 au
q 4.687093469982107 2.458e-07 au
i 15.34044178065116 1.0683e-05 deg
node 199.6192465080768 1.9134e-05 deg
peri 106.3669628331359 6.3183e-05 deg
M 63.62396260126284 5.7342e-05 deg
tp 2458245.121733065030
(2018-May-06.62173307)
0.00068222 TDB
period 4274.115678723722
11.70
0.00016409
4.493e-07
d
yr
n .08422794960652498 3.2337e-09 deg/d
Q 5.621400609855728 1.4388e-07 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      9220 days (25.24 yr)  
   first obs. used      1995-07-28  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:48:56  

Additional Information
 Earth MOID = 3.71391 au 
 Jupiter MOID = .0588158 au 
 T_jup = 2.921 
[ 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 13.7   n/a MPO413252  

295558 (2008 SM55)          Discovered 2008-Sep-20 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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