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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325975160029566 6.4111e-08  
a 2.757995012531675 2.7904e-08 AU
q 2.392291724721432 1.7681e-07 AU
i 9.087910239099513 8.9584e-06 deg
node 3.739301877281838 4.4962e-05 deg
peri 47.40352025671027 5.8812e-05 deg
M 77.91366318832547 3.5943e-05 deg
tp 2456038.423978637974
(2012-Apr-20.92397864)		 0.00016646 JED
period 1672.971881392178
4.58		 2.5389e-05
6.951e-08		 d
yr
n .2151859239262425 3.2657e-09 deg/d
Q 3.123698300341918 3.1604e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      801  
   data-arc span      10380 days (28.42 yr)  
   first obs. used      1984-11-21  
   last obs. used      2013-04-23  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .51374  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:37:52  

Additional Information
 Earth MOID = 1.41177 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 13.6 mag n/a PDS3 (MPC 33660)  

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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