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JPL Small-Body Database Browser
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34621 (2000 UR55)
Classification: Main-belt Asteroid          SPK-ID: 2034621
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08469336888947368 5.5084e-08  
a 2.993431326734842 2.2616e-08 au
q 2.739907543134381 1.6935e-07 au
i 9.690742369741775 5.0386e-06 deg
node 84.21464522268799 3.5842e-05 deg
peri 244.2320217972117 4.9422e-05 deg
M 359.137675883176 3.67e-05 deg
tp 2459005.031274867863
(2020-Jun-04.53127487)
0.00019286 TDB
period 1891.700487792009
5.18
2.1439e-05
5.87e-08
d
yr
n .1903049675798264 2.1567e-09 deg/d
Q 3.246955110335302 2.4532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1111  
   data-arc span      7683 days (21.03 yr)  
   first obs. used      1998-04-23  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56912  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:52:06  

Additional Information
 Earth MOID = 1.74497 au 
 Jupiter MOID = 2.02795 au 
 T_jup = 3.228 
[ 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 13.7   n/a MPO493094  
diameter diameter 4.784 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.220 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.307   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

34621 (2000 UR55)          Discovered 2000-Oct-24 by LINEAR at Socorro
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 UR55 = 1998 KQ57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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