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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220451573275879 5.9526e-08  
a 3.980754854887961 5.8414e-08 au
q 3.494923002340601 2.3305e-07 au
i 1.710445875010491 7.1054e-06 deg
node 310.6377574070035 0.00024483 deg
peri 169.1454634844213 0.00024816 deg
M 62.9638551519931 3.6497e-05 deg
tp 2458493.117612845558
(2019-Jan-09.61761285)
0.00029409 TDB
period 2900.992306374322
7.94
6.3854e-05
1.748e-07
d
yr
n .1240954687156445 2.7315e-09 deg/d
Q 4.466586707435321 6.5543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      7166 days (19.62 yr)  
   first obs. used      2000-10-02  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61035  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:19:15  

Additional Information
 Earth MOID = 2.51096 au 
 Jupiter MOID = .62335 au 
 T_jup = 3.043 
[ 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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