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249256 (2008 SH38)
Classification: Jupiter Trojan          SPK-ID: 2249256
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01270278650123905 5.67e-08  
a 5.252876480343424 1.9915e-07 au
q 5.186150311896242 3.642e-07 au
i 7.296630723344728 8.2346e-06 deg
node 187.2662250016001 4.4247e-05 deg
peri 288.5123921633787 0.00041173 deg
M 254.8047852855983 0.00041647 deg
tp 2460285.454333700231
(2023-Dec-06.95433370)
0.0051316 TDB
period 4397.382156478962
12.04
0.00025008
6.847e-07
d
yr
n .08186688970609195 4.6557e-09 deg/d
Q 5.319602648790607 2.0168e-07 au
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      8878 days (24.31 yr)  
   first obs. used      1995-07-26  
   last obs. used      2019-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62713  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:44:14  

Additional Information
 Earth MOID = 4.20995 au 
 Jupiter MOID = .217598 au 
 T_jup = 2.984 
[ 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 MPO454847  
diameter diameter 12.063 km 1.353 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.040   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

249256 (2008 SH38)          Discovered 2008-Sep-20 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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