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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1322846957600722 6.3573e-08  
a 2.758344729323373 2.6946e-08 AU
q 2.393457936003432 1.7515e-07 AU
i 9.086959631051624 8.7923e-06 deg
node 3.736784758842984 4.3137e-05 deg
peri 47.39947245414364 5.5859e-05 deg
M 164.0171300529359 3.474e-05 deg
tp 2456038.143780891649
(2012-Apr-20.64378089)
0.00015929 JED
period 1673.290093482487
4.58
2.4519e-05
6.713e-08
d
yr
n .2151450016958867 3.1526e-09 deg/d
Q 3.123231522643315 3.051e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      10720 days (29.35 yr)  
   first obs. used      1984-11-21  
   last obs. used      2014-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51899  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:57:39  

Additional Information
 Earth MOID = 1.41245 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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