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9954 Brachiosaurus (1991 GX7)
Classification: Main-belt Asteroid          SPK-ID: 2009954
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320973420386334 5.8985e-08  
a 2.758804900035925 2.6179e-08 AU
q 2.394374105538022 1.6151e-07 AU
i 9.086200279972887 8.0047e-06 deg
node 3.730809172096519 4.0133e-05 deg
peri 47.40017466879245 5.1029e-05 deg
M 207.0453717782814 3.2023e-05 deg
tp 2457711.615314859332
(2016-Nov-19.11531486)
0.00015221 JED
period 1673.708839841493
4.58
2.3824e-05
6.523e-08
d
yr
n .215091174420811 3.0616e-09 deg/d
Q 3.123235694533828 2.9637e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      10756 days (29.45 yr)  
   first obs. used      1984-11-21  
   last obs. used      2014-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49591  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:15:46  

Additional Information
 Earth MOID = 1.41422 AU 
 T_jup = 3.312 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO263438  

9954 Brachiosaurus           Discovered 1991 Apr. 8 by E. W. Elst at the European Southern Observatory.
Brachiosaurus, the heaviest of all dinosaurs (about 70 tons) had a very long neck with a small head. Preferring swampy areas, where the water would have supported its weight, it lived during in Jurassic--Lower Cretaceous times.
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

Alternate Designations
 1991 GX7 = 1984 WP5 = 1993 UO3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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