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249246 (2008 RS4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249246
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224822043827239 8.0323e-08  
a 3.983156280362635 6.6274e-08 au
q 3.495290518742929 3.3614e-07 au
i 1.710169683942637 8.322e-06 deg
node 310.6312565858091 0.00025502 deg
peri 169.3081557706679 0.00025874 deg
M 13.18473678029906 3.7528e-05 deg
tp 2458494.157121979179
(2019-Jan-10.65712198)
0.00030304 TDB
period 2903.617776025651
7.95
7.2469e-05
1.984e-07
d
yr
n .1239832608039591 3.0944e-09 deg/d
Q 4.471022041982342 7.4392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      6703 days (18.35 yr)  
   first obs. used      2000-10-02  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59621  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:07:37  

Additional Information
 Earth MOID = 2.51164 au 
 Jupiter MOID = .619964 au 
 T_jup = 3.042 
[ 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 5.026 km 0.435 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.040   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

249246 (2008 RS4)          Discovered 2008-Sep-02 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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