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JPL Small-Body Database Browser
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379946 (2012 MD9)
Classification: Main-belt Asteroid          SPK-ID: 2379946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262333810414099 4.5588e-08  
a 2.309939839112611 1.7641e-08 au
q 2.018348323219175 1.1095e-07 au
i 5.94918419742377 6.0711e-06 deg
node 229.5058310534334 4.1389e-05 deg
peri 68.83568248027083 5.0855e-05 deg
M 58.413807620051 2.5466e-05 deg
tp 2458792.428572933842
(2019-Nov-04.92857293)
9.117e-05 TDB
period 1282.328901259725
3.51
1.469e-05
4.022e-08
d
yr
n .2807392078945937 3.2161e-09 deg/d
Q 2.601531355006046 1.9868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6159 days (16.86 yr)  
   first obs. used      2002-09-13  
   last obs. used      2019-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 03:15:08  

Additional Information
 Earth MOID = 1.0118 au 
 Jupiter MOID = 2.57563 au 
 T_jup = 3.567 
[ show covariance matrix ]

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 17.6   n/a MPO476779  

379946 (2012 MD9)          Discovered 2005-Jun-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2012 MD9 = 2005 MF44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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