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9951 Tyrannosaurus (1990 VK5)
Classification: Main-belt Asteroid          SPK-ID: 2009951
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227290070370404 2.4858e-08  
a 2.426034071177818 7.6776e-09 au
q 2.128289318584136 5.8903e-08 au
i 7.402929600172412 2.7515e-06 deg
node 133.3918177026094 3.1186e-05 deg
peri 153.023496049034 3.5743e-05 deg
M 108.6359622645607 1.8047e-05 deg
tp 2458784.000115449104
(2019-Oct-27.50011545)
6.9244e-05 TDB
period 1380.205553600882
3.78
6.5519e-06
1.794e-08
d
yr
n .2608307139909554 1.2382e-09 deg/d
Q 2.723778823771501 8.6199e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2121  
   data-arc span      16983 days (46.50 yr)  
   first obs. used      1974-07-19  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:51:52  

Additional Information
 Earth MOID = 1.11302 au 
 Jupiter MOID = 2.43526 au 
 T_jup = 3.489 
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Orbital Elements at Epoch 2457427.5 (2016-Feb-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1225038536865181 2.4746e-08  
q 2.129150899351094 5.8631e-08 au
tp 2457404.915751941196
(2016-Jan-17.41575194)
7.0279e-05 TDB
node 133.4293760357106 3.1206e-05 deg
peri 153.3867389429953 3.5813e-05 deg
i 7.400243179173483 2.7507e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2121  
   data-arc span      16983 days (46.50 yr)  
   first obs. used      1974-07-19  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:51:52  

Additional Information
 Jupiter MOID = 2.43526 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.123449911686368E-16 -1.441791683123401E-15 -4.39937560714821E-13 -1.626610542764265E-15 -1.135319661612137E-13 4.441923060467987E-17
q -1.441791683123401E-15 3.437551906484207E-15 9.953069273868932E-13 4.157317609093008E-15 2.567795347736411E-13 -7.602793521018143E-17
tp -4.39937560714821E-13 9.953069273868932E-13 4.939164401691816E-9 1.566818983552277E-11 1.25667221099284E-9 6.946719777828432E-13
node -1.626610542764265E-15 4.157317609093008E-15 1.566818983552277E-11 9.738297662426437E-10 -9.616613702582607E-10 1.738767804491677E-11
peri -1.135319661612137E-13 2.567795347736411E-13 1.25667221099284E-9 -9.616613702582607E-10 1.282576995258765E-9 -1.708025110089957E-11
i 4.441923060467987E-17 -7.602793521018143E-17 6.946719777828432E-13 1.738767804491677E-11 -1.708025110089957E-11 7.566122187477167E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.30   n/a E2021B10  
rotation period rot_per 3.767 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Marchini, A.; Franco, L.; Papini, R.; Banfi, M.; et al. (2019) Minor Planet Bull. 46, 504-505.]

9951 Tyrannosaurus           Discovered 1990 Nov. 15 by E. W. Elst at the European Southern Observatory.
Tyrannosaurus, a heavy bipedal dinosaur with a huge skull, long massive jaws and dagger-like teeth, was a most terrifying predator. Almost 14 meters long and 5 to 8 meters high, it lived during Upper 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

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Alternate Designations
 1990 VK5 = 1974 OG1 = 1992 EZ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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