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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412491139507451 3.6603e-08  
a 3.163722579808831 1.1306e-08 au
q 2.716849568624868 1.188e-07 au
i 20.83435933882446 3.8647e-06 deg
node 357.2449308700352 1.1192e-05 deg
peri 356.117543423871 1.886e-05 deg
M 85.13894762450725 1.5826e-05 deg
tp 2458514.404282470238
(2019-Jan-30.90428247)
8.9924e-05 TDB
period 2055.398418623889
5.63
1.1018e-05
3.017e-08
d
yr
n .1751485243629912 9.3885e-10 deg/d
Q 3.610595590992793 1.2903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3639  
   data-arc span      43035 days (117.82 yr)  
   first obs. used      1903-01-18  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:06  

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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

[ show close-approach data ]
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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