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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06572967088238886 6.5113e-08  
a 3.16127138644067 3.8061e-08 AU
q 2.953482058640012 2.1879e-07 AU
i 9.273986575887301 1.1824e-05 deg
node 11.31588310225725 4.3596e-05 deg
peri 85.19528190067763 0.00010171 deg
M 320.3853375163066 9.0774e-05 deg
tp 2457026.414734318170
(2015-Jan-03.91473432)
0.00051776 JED
period 2053.010154712763
5.62
3.7077e-05
1.015e-07
d
yr
n .1753522744023484 3.1668e-09 deg/d
Q 3.369060714241329 4.0563e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      783  
   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      .56183  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:16:10  

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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