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249266 (2008 SD127)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249266
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2601969956646629 7.6431e-08  
a 3.977379777211164 5.1075e-08 au
q 2.942477508563433 3.0134e-07 au
i 4.443760554422113 8.5978e-06 deg
node 218.7645974869508 6.9364e-05 deg
peri 185.0489684012154 7.3944e-05 deg
M 157.2563712613992 1.7819e-05 deg
tp 2457734.890378003133
(2016-Dec-12.39037800)
0.00013582 TDB
period 2897.303684831437
7.93
5.5809e-05
1.528e-07
d
yr
n .1242534574075705 2.3934e-09 deg/d
Q 5.012282045858895 6.4365e-08 au
  Orbit Determination Parameters
   # obs. used (total)      290  
   data-arc span      10041 days (27.49 yr)  
   first obs. used      1992-10-22  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:42:19  

Additional Information
 Earth MOID = 1.9516 au 
 Jupiter MOID = .404665 au 
 T_jup = 2.992 
[ 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 MPO433633  
diameter diameter 4.758 km 0.519 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.054   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

249266 (2008 SD127)          Discovered 2008-Sep-22 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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