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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457137.5 (2015-Apr-25.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02473218232667864 3.3705e-08  
q 2.99169230420832 1.0439e-07 au
tp 2457860.619200971786
(2017-Apr-17.11920097)
0.00059338 TDB
node 357.716734994861 2.174e-05 deg
peri 106.2181468837249 0.0001099 deg
i 8.851726980857984 4.8835e-06 deg
  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
 Jupiter MOID = 1.86328 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.136040289199319E-15 -3.479913913566292E-15 6.223654882014896E-12 7.305113389134562E-16 1.157120245828075E-12 1.020042354218411E-15
q -3.479913913566292E-15 1.089734206937131E-14 -1.494512076703684E-11 -4.814693001933708E-15 -2.810524151777574E-12 -2.783508770526942E-15
tp 6.223654882014896E-12 -1.494512076703684E-11 3.520952177050709E-7 -3.152320629876222E-11 6.393088588837636E-8 1.358084111123149E-11
node 7.305113389134562E-16 -4.814693001933708E-15 -3.152320629876222E-11 4.726156870342891E-10 -4.722464163905394E-10 -2.445687226030265E-11
peri 1.157120245828075E-12 -2.810524151777574E-12 6.393088588837636E-8 -4.722464163905394E-10 1.20779598230404E-8 2.660223637764663E-11
i 1.020042354218411E-15 -2.783508770526942E-15 1.358084111123149E-11 -2.445687226030265E-11 2.660223637764663E-11 2.38484884774256E-11

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

[ show close-approach data ]
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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