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3937 Bretagnon (1932 EO)
Classification: Main-belt Asteroid          SPK-ID: 2003937
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02573084782060795 3.6999e-08  
a 3.065542777242196 1.5538e-08 au
q 2.986663762553413 1.1355e-07 au
i 8.852665642962114 4.8883e-06 deg
node 357.3898940009581 2.1729e-05 deg
peri 116.1501278965235 0.00010046 deg
M 236.0088171482668 0.0001002 deg
tp 2459875.723891125718
(2022-Oct-23.22389113)
0.00054788 TDB
period 1960.466826870511
5.37
1.4906e-05
4.081e-08
d
yr
n .1836297330134717 1.3962e-09 deg/d
Q 3.144421791930979 1.5938e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3288  
   data-arc span      32450 days (88.84 yr)  
   first obs. used      1932-03-14  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:44:53  

Additional Information
 Earth MOID = 2.0138 au 
 Jupiter MOID = 1.86328 au 
 T_jup = 3.214 
[ 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 11.89   n/a E2021B10  
diameter diameter 15.866 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.96595 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.145   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3937 Bretagnon (1932 EO)          Discovered 1932-Mar-14 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1932 EO = 1972 RP = 1975 EJ1 = 1978 TR5 = 1978 WL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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