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JPL Small-Body Database Browser
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1543 Bourgeois (1941 SJ)
Classification: Main-belt Asteroid          SPK-ID: 2001543
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3235768305421484 4.2666e-08  
a 2.633104704252427 8.691e-09 au
q 1.781093029564806 1.1128e-07 au
i 11.02338108582401 4.0682e-06 deg
node 287.9355467519319 2.3303e-05 deg
peri 25.87236786002158 2.4244e-05 deg
M 85.42215958577779 9.3128e-06 deg
tp 2458230.187249043548
(2018-Apr-21.68724904)
3.9359e-05 TDB
period 1560.632404879148
4.27
7.7267e-06
2.115e-08
d
yr
n .2306757176606734 1.1421e-09 deg/d
Q 3.485116378940048 1.1503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2326  
   data-arc span      28573 days (78.23 yr)  
   first obs. used      1941-09-13  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44035  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:01:59  

Additional Information
 Earth MOID = .772776 au 
 Jupiter MOID = 1.83856 au 
 T_jup = 3.297 
[ 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 12.0   n/a MPO332829  
diameter diameter 11.985 km 0.673 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.48 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.214   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1543 Bourgeois (1941 SJ)          Discovered 1941-Sep-21 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 SJ = A911 MF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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