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214493 (2005 US251)
Classification: Main-belt Asteroid          SPK-ID: 2214493
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 .2736155030945879 5.3788e-08  
a 3.131208619063868 3.4221e-08 au
q 2.274461397464598 1.7524e-07 au
i 10.58080465082138 9.0369e-06 deg
node 38.66711743794445 3.3524e-05 deg
peri 277.2271167501549 3.7778e-05 deg
M 287.4188136330124 1.9546e-05 deg
tp 2459408.526147079721
(2021-Jul-13.02614708)
0.0001146 TDB
period 2023.79459886467
5.54
3.3177e-05
9.083e-08
d
yr
n .1778836647760384 2.9162e-09 deg/d
Q 3.987955840663138 4.3585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      7539 days (20.64 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57224  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 09:07:18  

Additional Information
 Earth MOID = 1.29123 au 
 Jupiter MOID = 1.5528 au 
 T_jup = 3.129 
[ 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 15.2   n/a MPO294357  
diameter diameter 5.259 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

214493 (2005 US251)          Discovered 2005-Oct-24 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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