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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1377469039215558 5.2596e-08  
a 2.96397462255345 2.7917e-08 au
q 2.55569629499465 1.5193e-07 au
i 8.386929665287749 5.4997e-06 deg
node 249.1685899881809 3.056e-05 deg
peri 123.3184624798998 3.5934e-05 deg
M 346.7512058450143 1.8109e-05 deg
tp 2458669.093663726905
(2019-Jul-04.59366373)
9.388e-05 TDB
period 1863.846524658476
5.10
2.6333e-05
7.21e-08
d
yr
n .1931489504297919 2.7289e-09 deg/d
Q 3.372252950112249 3.1763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      462  
   data-arc span      7769 days (21.27 yr)  
   first obs. used      1998-08-27  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52881  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 15:37:31  

Additional Information
 Earth MOID = 1.56788 au 
 Jupiter MOID = 2.15061 au 
 T_jup = 3.235 
[ 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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