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11768 Merrill (4107 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2011768
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06572963464077962 6.1513e-08  
a 3.161271358216978 4.0229e-08 AU
q 2.953482146841015 2.0685e-07 AU
i 9.273974618013368 1.1155e-05 deg
node 11.31589313365482 4.2083e-05 deg
peri 85.19530280835356 9.7977e-05 deg
M 320.3853046817813 8.6649e-05 deg
tp 2457026.414918541660
(2015-Jan-03.91491854)
0.00049398 JED
period 2053.010127218985
5.62
3.9189e-05
1.073e-07
d
yr
n .1753522767506545 3.3472e-09 deg/d
Q 3.369060569592941 4.2874e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      15646 days (42.84 yr)  
   first obs. used      1971-03-24  
   last obs. used      2014-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54117  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:11:16  

Additional Information
 Earth MOID = 1.98872 AU 
 T_jup = 3.181 
[ 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 13.0 mag n/a MPO236459  

11768 Merrill           Discovered 1971 Mar. 26 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Paul W. Merrill (1887-1961), a Mt. Wilson Observatory spectroscopist, was the first to detect a short-lived isotope, of technetium, in the atmospheres of stars, thus confirming that nucleosynthesis must occur in stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 4107 T-1 = 1996 TD12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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