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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413409725050849 2.0131e-08  
a 3.164065494149394 9.256e-09 au
q 2.716853400136536 6.2546e-08 au
i 20.83556441732356 7.2415e-07 deg
node 357.2365436060461 3.0593e-06 deg
peri 356.1779672664876 8.6334e-06 deg
M 120.0970726490265 1.1374e-05 deg
tp 2458514.701478377948
(2019-Jan-31.20147838)
6.3237e-05 TDB
period 2055.732603120531
5.63
9.0206e-06
2.47e-08
d
yr
n .175120051826552 7.6843e-10 deg/d
Q 3.611277588162251 1.0564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3994  
   data-arc span      43161 days (118.17 yr)  
   first obs. used      1903-01-18  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .31714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:29:20  

Additional Information
 Earth MOID = 1.7109 au 
 Jupiter MOID = 1.83501 au 
 T_jup = 3.087 
[ 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 9.39   n/a MPCxxxxx  
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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