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226978 (2004 XB20)
Classification: Main-belt Asteroid          SPK-ID: 2226978
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380873439149573 5.2519e-08  
a 2.965090717967202 2.6715e-08 au
q 2.555649216256218 1.5193e-07 au
i 8.386293053372526 5.4904e-06 deg
node 249.1696758710954 2.9222e-05 deg
peri 123.3547548441424 3.4655e-05 deg
M 63.94177193028838 1.7575e-05 deg
tp 2458669.263969736984
(2019-Jul-04.76396974)
9.0655e-05 TDB
period 1864.899381028898
5.11
2.5204e-05
6.9e-08
d
yr
n .1930399053494144 2.6089e-09 deg/d
Q 3.374532219678187 3.0404e-08 au
  Orbit Determination Parameters
   # obs. used (total)      488  
   data-arc span      7823 days (21.42 yr)  
   first obs. used      1998-08-27  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50551  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 06:01:06  

Additional Information
 Earth MOID = 1.56862 au 
 Jupiter MOID = 2.15072 au 
 T_jup = 3.234 
[ 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 15.3   n/a MPO454631  
diameter diameter 3.038 km 0.336 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.145   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226978 (2004 XB20)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2004 XB20 = 2008 OB7 = 2009 QT50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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