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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06897803290392147 3.5471e-08  
a 3.161172911976387 2.0867e-08 au
q 2.943121422839094 1.1849e-07 au
i 9.281747905162295 5.7261e-06 deg
node 11.2360368019112 2.4544e-05 deg
peri 83.40464857551737 5.1673e-05 deg
M 277.6135011708803 4.3798e-05 deg
tp 2459070.312265606947
(2020-Aug-08.81226561)
0.00025011 TDB
period 2052.914227721992
5.62
2.0327e-05
5.565e-08
d
yr
n .1753604681280194 1.7363e-09 deg/d
Q 3.379224401113679 2.2306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      17787 days (48.70 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48377  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:19:10  

Additional Information
 Earth MOID = 1.97878 au 
 Jupiter MOID = 1.77114 au 
 T_jup = 3.181 
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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 13.1   n/a MPO365391  
diameter diameter 11.767 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 4107 T-1 = 1996 TD12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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