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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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1943-Jun-08 19:07 < 00:01 Jupiter 1.81874512303898 1.81874489650107 1.81874534957844 2.82066965844303 2.65042282196799 2430884.296714864 0.861933583127874 135.741089831801 8.82832954816859 86.0129002703996 19157458.6690333 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35
1989-Dec-29 06:39 < 00:01 Jupiter 1.95987399475579 1.95987375129064 1.9598742382226 3.00738510658838 2.86007009108466 2447889.777034386 0.320285713966394 97.8758466795149 3.54218694318434 -83.422110595605 22690722.6387368 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35
2003-Jun-09 22:48 < 00:01 Jupiter 1.98530876626885 1.98530853258579 1.98530899995212 2.45315418733697 2.27259213475603 2452800.449813991 0.147686950996151 54.9822837835582 9.71766582416228 -83.2514256563399 19919613.6884799 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35
2049-Dec-29 22:39 < 00:01 Jupiter 1.81732810340416 1.81732797476577 1.81732823204441 2.85260990323065 2.68425423670954 2469805.443924405 0.452191657826806 105.243600520241 3.1685971848714 -87.6859630130039 22184495.4862085 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35
2109-Dec-27 05:57 00:01 Jupiter 1.90296894694607 1.9029683546838 1.90296953921125 2.53301925498365 2.35073923494647 2491716.748176910 1.23032044542151 144.114141271479 16.645631905169 75.9499282305476 19879482.3880176 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35
2156-Jul-21 00:55 00:02 Jupiter 1.85654520632485 1.8565445897692 1.85654582292431 2.89055861612094 2.72816007228089 2508724.537938384 1.80190906613641 464.949651931414 2.07107433044524 -86.8083619407864 22220651.2370088 T 43 CATAB v2.0g-lin.ifort 2021-May-03 19:35:29 2021-May-03 19:35

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