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12309 Tommygrav (1992 DD3)
Classification: Main-belt Asteroid          SPK-ID: 2012309
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03212566491110674 5.2242e-08  
a 2.717860423843399 2.0274e-08 au
q 2.630547350591847 1.3821e-07 au
i .7204050326750195 5.8294e-06 deg
node 321.2394367212726 0.00048005 deg
peri 109.1477853964522 0.00049107 deg
M 201.4261825617787 0.00010512 deg
tp 2458121.388557299040
(2018-Jan-02.88855730)
0.00047933 JED
period 1636.587204749363
4.48
1.8312e-05
5.014e-08
d
yr
n .2199699465786381 2.4613e-09 deg/d
Q 2.80517349709495 2.0925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      865  
   data-arc span      8569 days (23.46 yr)  
   first obs. used      1992-02-25  
   last obs. used      2015-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50238  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:35:31  

Additional Information
 Earth MOID = 1.64378 au 
 Jupiter MOID = 2.2783 au 
 T_jup = 3.359 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a MPO279645  

12309 Tommygrav           Discovered 1992 Feb. 25 by Spacewatch at Kitt Peak.
Tommy Grav (b. 1973) earned a Ph.D. in astronomy at the University of Oslo in 2004, in collaboration with the Harvard-Smithsonian Center for Astrophysics, and started work as Junior Scientific Researcher with Pan-STARRS. He is an experienced observer of transneptunian objects and outer satellites of the giant planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060613/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1992 DD3 = 1998 MJ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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