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JPL Small-Body Database Browser
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249285 (2008 SP304)
Classification: Main-belt Asteroid          SPK-ID: 2249285
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162373960917603 7.3616e-08  
a 2.341002959895021 1.981e-08 au
q 2.06889087159372 1.7073e-07 au
i 2.258814339328543 7.4186e-06 deg
node 59.82414553144807 0.00015021 deg
peri 160.5420116140082 0.00015184 deg
M 142.2282963630778 2.5099e-05 deg
tp 2458083.625771900071
(2017-Nov-26.12577190)		 8.8277e-05 TDB
period 1308.282014719254
3.58		 1.6606e-05
4.546e-08		 d
yr
n .2751700290531419 3.4927e-09 deg/d
Q 2.613115048196322 2.2112e-08 au
   Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      6091 days (16.68 yr)  
   first obs. used      2003-03-24  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58688  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:47:07  

Additional Information
 Earth MOID = 1.06091 au 
 Jupiter MOID = 2.35795 au 
 T_jup = 3.554 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.5   n/a MPO454847  
diameter diameter 1.491 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249285 (2008 SP304)          Discovered 2008-Sep-24 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 SP304 = 2004 RY122 = 2005 WO101 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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