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249274 (2008 SH198)
Classification: Main-belt Asteroid          SPK-ID: 2249274
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06703838532799321 8.3866e-08  
a 3.044046296011007 4.6162e-08 au
q 2.83997834746277 2.7082e-07 au
i 4.275023838403792 7.9851e-06 deg
node 70.85758521074213 0.00011349 deg
peri 310.87895565 0.00012744 deg
M 81.79477998231914 5.9428e-05 deg
tp 2458559.743836190499
(2019-Mar-17.24383619)
0.0003173 TDB
period 1939.881970533072
5.31
4.4127e-05
1.208e-07
d
yr
n .1855783008803744 4.2214e-09 deg/d
Q 3.248114244559243 4.9257e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      9419 days (25.79 yr)  
   first obs. used      1993-12-14  
   last obs. used      2019-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60161  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:49  

Additional Information
 Earth MOID = 1.84539 au 
 Jupiter MOID = 2.11446 au 
 T_jup = 3.231 
[ 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 16.0   n/a MPO454847  
diameter diameter 4.654 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249274 (2008 SH198)          Discovered 2008-Sep-25 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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