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249278 (2008 SV254)
Classification: Main-belt Asteroid          SPK-ID: 2249278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2361119442634318 3.9228e-08  
a 3.170477640748956 4.0546e-08 au
q 2.421890000747982 1.3211e-07 au
i 16.73822809213123 8.0327e-06 deg
node 173.1296600788072 1.7078e-05 deg
peri 283.4785910534159 2.6067e-05 deg
M 325.2537585689224 2.0469e-05 deg
tp 2459199.517286796478
(2020-Dec-16.01728680)
0.00011974 TDB
period 2061.9848448601
5.65
3.9554e-05
1.083e-07
d
yr
n .1745890620376626 3.3491e-09 deg/d
Q 3.919065280749931 5.0119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      6356 days (17.40 yr)  
   first obs. used      2002-08-29  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:25  

Additional Information
 Earth MOID = 1.5021 au 
 Jupiter MOID = 1.6079 au 
 T_jup = 3.094 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO413152  
diameter diameter 2.755 km 0.574 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249278 (2008 SV254)          Discovered 2008-Sep-23 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 SV254 = 2002 RE161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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