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187953 (2001 OB8)
Classification: Main-belt Asteroid          SPK-ID: 2187953
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2270970018696134 5.0478e-08  
a 2.346840759399245 9.1879e-09 au
q 1.813880259074269 1.2243e-07 au
i 3.840469975853997 4.042e-06 deg
node 262.9891761432728 8.3212e-05 deg
peri 127.5771265705134 8.4936e-05 deg
M 95.28284798167283 1.4343e-05 deg
tp 2458852.934957609300
(2020-Jan-04.43495761)		 5.1434e-05 TDB
period 1313.178792522225
3.60		 7.7117e-06
2.111e-08		 d
yr
n .2741439338268228 1.6099e-09 deg/d
Q 2.87980125972422 1.1274e-08 au
   Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      7704 days (21.09 yr)  
   first obs. used      1998-11-18  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52508  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:45:49  

Additional Information
 Earth MOID = .821532 au 
 Jupiter MOID = 2.57598 au 
 T_jup = 3.522 
[ 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 16.6   n/a MPO494037  
diameter diameter 3.095 km 0.955 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187953 (2001 OB8)          Discovered 2001-Jul-17 by LONEOS at Anderson Mesa
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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