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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2359156719617157 4.012e-08  
a 3.169517868626523 4.1554e-08 au
q 2.421778930854832 1.3352e-07 au
i 16.73990009403155 8.0469e-06 deg
node 173.1315074784701 1.7523e-05 deg
peri 283.5353626088464 2.6379e-05 deg
M 255.3224992021775 1.9699e-05 deg
tp 2459199.792824879353
(2020-Dec-16.29282488)
0.00012015 TDB
period 2061.048604640122
5.64
4.0532e-05
1.11e-07
d
yr
n .1746683698722667 3.435e-09 deg/d
Q 3.917256806398214 5.1357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      6244 days (17.10 yr)  
   first obs. used      2002-08-29  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60143  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:49  

Additional Information
 Earth MOID = 1.50209 au 
 Jupiter MOID = 1.6098 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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