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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0676537207091927 6.0756e-08  
a 3.166264544365059 3.7573e-08 au
q 2.952054967189166 2.0453e-07 au
i 9.28010827188317 8.0826e-06 deg
node 11.24789579887329 4.1231e-05 deg
peri 85.1702450429473 8.5111e-05 deg
M 65.48586887440919 6.9081e-05 deg
tp 2457026.161654183370
(2015-Jan-03.66165418)
0.0003974 JED
period 2057.876100757513
5.63
3.663e-05
1.003e-07
d
yr
n .1749376455985288 3.1139e-09 deg/d
Q 3.380474121540952 4.0115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      834  
   data-arc span      16325 days (44.70 yr)  
   first obs. used      1971-03-24  
   last obs. used      2015-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53632  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:18:41  

Additional Information
 Earth MOID = 1.98751 au 
 Jupiter MOID = 1.76485 au 
 T_jup = 3.180 
[ 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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