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9949 Brontosaurus (1990 SK6)
Classification: Main-belt Asteroid          SPK-ID: 2009949
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06065070076792673 9.0563e-08  
a 2.354491499650928 1.5421e-08 AU
q 2.211689940244972 2.1786e-07 AU
i 7.70302350978559 8.4817e-06 deg
node 29.8495411882894 3.7774e-05 deg
peri 174.3696685831302 5.8234e-05 deg
M 49.99356561280336 4.2618e-05 deg
tp 2456817.245043957891
(2014-Jun-08.74504396)
0.00015636 JED
period 1319.605500557932
3.61
1.2965e-05
3.55e-08
d
yr
n .2728088052435301 2.6802e-09 deg/d
Q 2.497293059056883 1.6357e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      13217 days (36.19 yr)  
   first obs. used      1978-04-07  
   last obs. used      2014-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48579  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:16:38  

Additional Information
 Earth MOID = 1.20884 AU 
 T_jup = 3.541 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO256938  

9949 Brontosaurus           Discovered 1990 Sept. 22 by E. W. Elst at the European Southern Observatory.
Brontosaurus was a gigantic dinosaur, as large as 20 meters and weighing about 30 tons. It lived in Upper Jurassic times and walked on all four legs. Many skeletons have been found in the United States.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1990 SK6 = 1978 GT1 = 1985 DM1 = 1992 BS 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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