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266649 (2008 SG287)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266649
[ 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08709236542810127 5.6491e-08  
a 3.952820555030096 9.1583e-08 au
q 3.608560062779704 2.4052e-07 au
i 8.95581648947574 7.7105e-06 deg
node 339.7378532983724 3.8423e-05 deg
peri 109.0796506311411 5.8641e-05 deg
M 67.35569840093416 4.4007e-05 deg
tp 2458063.429969498200
(2017-Nov-05.92996950)		 0.00035341 TDB
period 2870.510076664375
7.86		 9.9761e-05
2.731e-07		 d
yr
n .1254132507412521 4.3586e-09 deg/d
Q 4.297081047280487 9.956e-08 au
   Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      6402 days (17.53 yr)  
   first obs. used      2001-12-09  
   last obs. used      2019-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61826  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:36:46  

Additional Information
 Earth MOID = 2.63969 au 
 Jupiter MOID = .914089 au 
 T_jup = 3.032 
[ 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 14.2   n/a MPO433731  
diameter diameter 7.440 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.073   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

266649 (2008 SG287)          Discovered 2008-Sep-23 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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