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12729 Berger (1991 RL7)
Classification: Main-belt Asteroid          SPK-ID: 2012729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04551939492899253 3.3908e-08  
a 2.405139680741064 7.9802e-09 au
q 2.295659177754021 8.2712e-08 au
i 11.54717760416612 4.0688e-06 deg
node 213.8196249664144 1.7318e-05 deg
peri 116.6733150903093 4.661e-05 deg
M 351.4869336110322 4.3725e-05 deg
tp 2459232.717541869674
(2021-Jan-18.21754187)
0.00016549 TDB
period 1362.413323607242
3.73
6.7807e-06
1.856e-08
d
yr
n .2642369931078135 1.3151e-09 deg/d
Q 2.514620183728108 8.3434e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2214  
   data-arc span      13698 days (37.50 yr)  
   first obs. used      1983-06-14  
   last obs. used      2020-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4572  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:07:36  

Additional Information
 Earth MOID = 1.31041 au 
 Jupiter MOID = 2.61526 au 
 T_jup = 3.494 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.78   n/a E2021B10  
rotation period rot_per 10.8065 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.]

12729 Berger           Discovered 1991 Sept. 13 by F. Borngen and L. D. Schmadel at Tautenburg.
The German medical doctor Hans Berger (1873-1941) was professor of neurology and psychiatry in Jena. He invented the electroencephalograph, placing electrical recording equipment on the surface of the skull.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1991 RL7 = 1998 QO65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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