Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
12309 Tommygrav (1992 DD3)
Classification: Main-belt Asteroid          SPK-ID: 2012309
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .03198955742022176 5.2271e-08  
a 2.718318575412436 2.0276e-08 au
q 2.631360767257825 1.3833e-07 au
i .7202871567926032 5.8294e-06 deg
node 321.2440195981818 0.0004801 deg
peri 108.9499401079253 0.0004912 deg
M 245.6067129173235 0.00010561 deg
tp 2458120.672028551738
(2018-Jan-02.17202855)
0.00048128 JED
period 1637.001043105653
4.48
1.8316e-05
5.015e-08
d
yr
n .2199143375724565 2.4605e-09 deg/d
Q 2.805276383567048 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 = 1.64381 au 
 Jupiter MOID = 2.27783 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-30 22:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin