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11769 Alfredjoy (2199 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2011769
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0379928925633938 5.909e-08  
a 2.598595979940084 2.5326e-08 AU
q 2.499867802058553 1.6696e-07 AU
i 3.061633003692171 7.3787e-06 deg
node 181.8133114844763 0.00011146 deg
peri 57.26844095559223 0.00015723 deg
M 18.27233645995162 0.00011518 deg
tp 2456722.839862872650
(2014-Mar-06.33986287)
0.00048914 JED
period 1530.053336480646
4.19
2.2368e-05
6.124e-08
d
yr
n .2352859154753746 3.4397e-09 deg/d
Q 2.697324157821615 2.6288e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      695  
   data-arc span      14498 days (39.69 yr)  
   first obs. used      1973-09-19  
   last obs. used      2013-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57699  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:11:17  

Additional Information
 Earth MOID = 1.48919 AU 
 T_jup = 3.413 
[ 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 14.7 mag n/a PDS3 (MPC 35902)  

11769 Alfredjoy           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Alfred H. Joy (1882-1973) was an astronomer at the Mount Wilson Observatory from 1915 to 1973 who measured spectroscopic parallaxes and radial velocities of stars and studied variable stars. He invented the T Tauri classification.
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
 2199 T-2 = 1997 LC11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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