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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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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3239002612709809 2.0211e-08  
a 2.632735899375509 8.266e-09 au
q 1.779992053710291 5.1832e-08 au
i 11.02403379340863 5.0075e-07 deg
node 287.9328254746941 1.3665e-06 deg
peri 25.92422053679207 3.4311e-06 deg
M 223.7348214966161 7.2087e-06 deg
tp 2459791.097710008685
(2022-Jul-30.59771001)
3.3235e-05 TDB
period 1560.304532223884
4.27
7.3483e-06
2.012e-08
d
yr
n .2307241904161466 1.0866e-09 deg/d
Q 3.485479745040727 1.0943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2961  
   data-arc span      29046 days (79.52 yr)  
   first obs. used      1941-09-13  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:34:02  

Additional Information
 Earth MOID = .770559 au 
 Jupiter MOID = 1.84116 au 
 T_jup = 3.298 
[ 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 12.08   n/a E2021B10  
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. 2020-October); 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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