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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1159465961093238 6.802e-08  
a 2.341519742109601 1.8832e-08 au
q 2.070028498289211 1.5835e-07 au
i 2.258469878159874 7.0817e-06 deg
node 59.82447761801654 0.00013616 deg
peri 160.5757645628969 0.00013788 deg
M 252.2263713303373 2.5735e-05 deg
tp 2459392.291642258961
(2021-Jun-26.79164226)
9.631e-05 TDB
period 1308.715248379947
3.58
1.5788e-05
4.323e-08
d
yr
n .2750789374889935 3.3186e-09 deg/d
Q 2.613010985929991 2.1016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      192  
   data-arc span      6148 days (16.83 yr)  
   first obs. used      2003-03-24  
   last obs. used      2020-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59313  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:25  

Additional Information
 Earth MOID = 1.06194 au 
 Jupiter MOID = 2.35725 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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