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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06929116615836144 3.3138e-08  
a 3.162909309502339 1.8604e-08 au
q 2.943747634993785 1.0865e-07 au
i 9.279715383225897 4.7595e-06 deg
node 11.22008145732732 2.3937e-05 deg
peri 83.01334005716544 4.8896e-05 deg
M 23.16506620763973 3.9969e-05 deg
tp 2459068.291438115051
(2020-Aug-06.79143811)
0.00022825 TDB
period 2054.605924799168
5.63
1.8127e-05
4.963e-08
d
yr
n .1752160819039734 1.5459e-09 deg/d
Q 3.382070984010894 1.9893e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1718  
   data-arc span      18201 days (49.83 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4684  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:02:23  

Additional Information
 Earth MOID = 1.97903 au 
 Jupiter MOID = 1.76824 au 
 T_jup = 3.180 
[ 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 13.19   n/a E2021B10  
diameter diameter 11.767 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.4028 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

[ show close-approach data ]
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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