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83464 Irishmccalla (2001 SM73)
Classification: Main-belt Asteroid          SPK-ID: 2083464
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640398108369968 7.5113e-08  
a 2.93955331288297 3.9478e-08 AU
q 2.45734954349238 2.3315e-07 AU
i 10.84049001844033 8.1738e-06 deg
node 56.12928585368496 3.7774e-05 deg
peri 278.8772620275008 4.6849e-05 deg
M 253.8909248595436 3.1339e-05 deg
tp 2457543.088352830131
(2016-Jun-03.58835283)
0.00016736 JED
period 1840.858633064955
5.04
3.7084e-05
1.015e-07
d
yr
n .1955609157236667 3.9396e-09 deg/d
Q 3.42175708227356 4.5954e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8541 days (23.38 yr)  
   first obs. used      1991-11-01  
   last obs. used      2015-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5831  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 19:23:50  

Additional Information
 Earth MOID = 1.47784 AU 
 T_jup = 3.227 
[ 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 14.0 mag n/a MPO253855  

83464 Irishmccalla           Discovered 2001 Sept. 19 by R. Tucker at the Goodricke-Pigott Observatory.
Nellie Elizabeth "Irish" McCalla (1929-2002) was an American film actress and artist. She produced over 1000 paintings and numerous limited-edition lithographs. She was a member of Woman Artists of the American West. Her art often featured themes from the Old West and the sweet innocence of youth.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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