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500 Selinur (A903 BJ)
Classification: Main-belt Asteroid          SPK-ID: 2000500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438313764275369 1.8872e-08  
a 2.613203086859532 7.1096e-09 au
q 2.237342489991837 5.0638e-08 au
i 9.781159149057705 1.0712e-06 deg
node 289.8297170734348 3.7283e-06 deg
peri 74.81537868844494 8.8253e-06 deg
M 56.2239961338561 6.2587e-06 deg
tp 2458959.522008753384
(2020-Apr-20.02200875)
2.675e-05 TDB
period 1542.972446181976
4.22
6.2968e-06
1.724e-08
d
yr
n .2333158967879211 9.5216e-10 deg/d
Q 2.989063683727228 8.1322e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2868  
   data-arc span      43167 days (118.18 yr)  
   first obs. used      1903-01-16  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37035  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:29:14  

Additional Information
 Earth MOID = 1.25666 au 
 Jupiter MOID = 2.52832 au 
 T_jup = 3.373 
[ 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 9.34   n/a E2021B10  
diameter diameter 40.828 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.0111 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
[Pligge, Z.; Monnier, A.; Pharo, J.; Stolze, K.; Yim, A.; Ditteon, R. (2011) Minor Planet Bull. 38, 5-7.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.202   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

500 Selinur (A903 BJ)          Discovered 1903-Jan-16 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A903 BJ = 1935 SJ2 = 1935 WD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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