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JPL Small-Body Database Browser
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501 Urhixidur (A903 BK)
Classification: Main-belt Asteroid          SPK-ID: 2000501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412491094723104 3.7651e-08  
a 3.163722580138882 1.195e-08 au
q 2.716849583076825 1.2287e-07 au
i 20.83435981570906 4.0545e-06 deg
node 357.2449311714959 1.146e-05 deg
peri 356.1175418009896 1.9377e-05 deg
M 85.13894907097465 1.6047e-05 deg
tp 2458514.404274135652
(2019-Jan-30.90427414)
9.1288e-05 TDB
period 2055.39841894553
5.63
1.1645e-05
3.188e-08
d
yr
n .175148524335583 9.9235e-10 deg/d
Q 3.61059557720094 1.3638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3327  
   data-arc span      42750 days (117.04 yr)  
   first obs. used      1903-01-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .33563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:28:52  

Additional Information
 Earth MOID = 1.71258 au 
 Jupiter MOID = 1.83481 au 
 T_jup = 3.088 
[ 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 9.4   n/a MPO502157  
diameter diameter 74.457 km 0.628 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.1743 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hills, K. (2013) Minor Planet Bull. 40, 12-13.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.052   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

501 Urhixidur (A903 BK)          Discovered 1903-Jan-18 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A903 BK = 1943 FC = 1949 FW = 1951 RB2 = 1951 SE = 1955 FB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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