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295941 (2008 XR20)
Classification: Main-belt Asteroid          SPK-ID: 2295941
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07901737761649907 8.2847e-08  
a 2.734227992678034 3.636e-08 au
q 2.518176466890991 2.3961e-07 au
i 7.205504175882011 6.0422e-06 deg
node 101.9176902391264 7.2739e-05 deg
peri 301.9712109331585 8.7458e-05 deg
M 238.0487642911747 5.2299e-05 deg
tp 2459559.915144286349
(2021-Dec-11.41514429)
0.00024644 TDB
period 1651.393286607849
4.52
3.2941e-05
9.019e-08
d
yr
n .2179977373769523 4.3485e-09 deg/d
Q 2.950279518465076 3.9234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      111  
   data-arc span      7050 days (19.30 yr)  
   first obs. used      2000-01-09  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:43:35  

Additional Information
 Earth MOID = 1.53674 au 
 Jupiter MOID = 2.35166 au 
 T_jup = 3.337 
[ 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 16.4   n/a MPO433907  

295941 (2008 XR20)          Discovered 2008-Dec-01 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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