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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1293187142381124 4.0999e-08  
a 2.760866813439196 1.4546e-08 au
q 2.403835066942565 1.155e-07 au
i 9.073700916594625 4.6062e-06 deg
node 3.460897842842729 2.8686e-05 deg
peri 48.3576199543745 3.3684e-05 deg
M 276.1108619499931 1.9146e-05 deg
tp 2459390.953969887610
(2021-Jun-25.45396989)
9.0328e-05 TDB
period 1675.585569561447
4.59
1.3242e-05
3.625e-08
d
yr
n .2148502628213868 1.6979e-09 deg/d
Q 3.117898559935828 1.6427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      13037 days (35.69 yr)  
   first obs. used      1984-11-21  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45786  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:13:48  

Additional Information
 Earth MOID = 1.42446 au 
 Jupiter MOID = 2.31602 au 
 T_jup = 3.311 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO492866  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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