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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131760895874492 5.3227e-08  
a 2.75937887631442 2.4758e-08 au
q 2.395800643514082 1.4898e-07 au
i 9.086396493254524 7.2176e-06 deg
node 3.721804864975609 3.9866e-05 deg
peri 47.31596444349625 4.992e-05 deg
M 336.1352612377283 3.2204e-05 deg
tp 2457711.486361444374
(2016-Nov-18.98636144)
0.00015042 JED
period 1674.231195991165
4.58
2.2533e-05
6.169e-08
d
yr
n .2150240664861556 2.8939e-09 deg/d
Q 3.122957109114757 2.8021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      11217 days (30.71 yr)  
   first obs. used      1984-11-21  
   last obs. used      2015-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49861  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:29:22  

Additional Information
 Earth MOID = 1.4144 au 
 Jupiter MOID = 2.32366 au 
 T_jup = 3.311 
[ 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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