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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0667196486951387 8.3902e-08  
a 3.043349438482789 4.5832e-08 au
q 2.84029823309067 2.7071e-07 au
i 4.275512014485627 7.9862e-06 deg
node 70.85822540708769 0.00011347 deg
peri 310.88418176 0.00012755 deg
M 7.571768900190833 5.9194e-05 deg
tp 2458559.713070896906
(2019-Mar-17.21307090)
0.0003186 TDB
period 1939.215878173949
5.31
4.3806e-05
1.199e-07
d
yr
n .1856420443189604 4.1935e-09 deg/d
Q 3.246400643874908 4.889e-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 = 1.84495 au 
 Jupiter MOID = 2.11578 au 
 T_jup = 3.232 
[ 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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