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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04551942447927779 1.1266e-08  
a 2.405139681862022 7.7638e-09 au
q 2.29565910775139 3.0323e-08 au
i 11.54718334060938 3.8955e-07 deg
node 213.8196406448788 4.1656e-06 deg
peri 116.6732881683624 2.7226e-05 deg
M 351.4869429655129 2.9349e-05 deg
tp 2459232.717506490339
(2021-Jan-18.21750649)
0.0001111 TDB
period 1362.413324559707
3.73
6.5968e-06
1.806e-08
d
yr
n .264236992923085 1.2794e-09 deg/d
Q 2.514620255972654 8.1172e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2261  
   data-arc span      13698 days (37.50 yr)  
   first obs. used      1983-06-14  
   last obs. used      2020-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:31:47  

Additional Information
 Earth MOID = 1.31041 au 
 Jupiter MOID = 2.61526 au 
 T_jup = 3.494 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456870.5 (2014-Aug-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04492328946306574 1.1347e-08  
q 2.296274026796565 3.0386e-08 au
tp 2456508.016210653192
(2013-Aug-03.51621065)
0.00011095 TDB
node 213.9561983376708 4.1664e-06 deg
peri 116.4011535888633 2.7641e-05 deg
i 11.54543216663025 3.8987e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2261  
   data-arc span      13698 days (37.50 yr)  
   first obs. used      1983-06-14  
   last obs. used      2020-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:31:47  

Additional Information
 Jupiter MOID = 2.61526 au 
 T_jup = 3.494 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.287457445655981E-16 -3.356656466864179E-16 -7.521561828488241E-13 -9.664473827195818E-15 -1.835695117446706E-13 4.496834693725824E-16
q -3.356656466864179E-16 9.233251290753606E-16 1.8694471612299E-12 2.356858318134582E-14 4.621861957428457E-13 -1.110128126671463E-15
tp -7.521561828488241E-13 1.8694471612299E-12 1.230971877053554E-8 5.273973802733468E-11 3.031824286580108E-9 -7.504246879924839E-12
node -9.664473827195818E-15 2.356858318134582E-14 5.273973802733468E-11 1.735856758784228E-11 -3.70502595866293E-12 4.678769496791154E-13
peri -1.835695117446706E-13 4.621861957428457E-13 3.031824286580108E-9 -3.70502595866293E-12 7.640261993911725E-10 -2.344703435124798E-12
i 4.496834693725824E-16 -1.110128126671463E-15 -7.504246879924839E-12 4.678769496791154E-13 -2.344703435124798E-12 1.520009087540394E-13

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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