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243322 (2008 SG31)
Classification: Jupiter Trojan          SPK-ID: 2243322
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09326418406202638 1.2229e-07  
a 5.178782615587389 1.8259e-07 au
q 4.695787680510024 7.2783e-07 au
i 6.886391382042228 8.5252e-06 deg
node 295.1339557762939 8.9515e-05 deg
peri 45.45785979349414 9.8771e-05 deg
M 26.61492080485284 4.0062e-05 deg
tp 2458682.254239786626
(2019-Jul-17.75423979)
0.000481 TDB
period 4304.670846735149
11.79
0.00022766
6.233e-07
d
yr
n .08363008759962211 4.4229e-09 deg/d
Q 5.661777550664754 1.9962e-07 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      8837 days (24.19 yr)  
   first obs. used      1995-07-23  
   last obs. used      2019-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55917  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:14:37  

Additional Information
 Earth MOID = 3.69153 au 
 Jupiter MOID = .230528 au 
 T_jup = 2.977 
[ 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 13.1   n/a MPO338726  
diameter diameter 12.391 km 0.777 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.073   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243322 (2008 SG31)          Discovered 2008-Sep-20 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2008 SG31 = 2007 RZ34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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