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12117 Meagmessina (1999 JT60)
Classification: Main-belt Asteroid          SPK-ID: 2012117
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1760280987905392 8.9668e-08  
a 2.465844380873664 1.9487e-08 AU
q 2.031786482595139 2.2166e-07 AU
i 3.067519576313666 8.5239e-06 deg
node 158.2723386211626 0.00010124 deg
peri 19.08265330613827 0.00010347 deg
M 54.50963159728393 1.8695e-05 deg
tp 2456786.350201422965
(2014-May-08.85020142)
7.4015e-05 JED
period 1414.317529373543
3.87
1.6765e-05
4.59e-08
d
yr
n .2545397285427539 3.0173e-09 deg/d
Q 2.899902279152189 2.2917e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      9972 days (27.30 yr)  
   first obs. used      1987-03-03  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54741  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:29:45  

Additional Information
 Earth MOID = 1.03727 AU 
 T_jup = 3.464 
[ 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 14.5 mag n/a MPO299050  

12117 Meagmessina           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Meagan Elizabeth Messina (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for her earth and space sciences project. She attends the Saint Joseph's Academy, Baton Rouge, Louisiana, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1999 JT60 = 1987 ER = 1991 HV1 = 1997 XQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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