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8474 Rettig (1985 GA1)
Classification: Main-belt Asteroid          SPK-ID: 2008474
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1713914332220514 5.5159e-08  
a 2.225315403703482 1.2655e-08 AU
q 1.843915407291634 1.2202e-07 AU
i 5.910289773842413 5.8202e-06 deg
node 132.6587045671077 5.8046e-05 deg
peri 141.7470579491395 6.1143e-05 deg
M 228.6622655467943 2.2569e-05 deg
tp 2457242.856901980129
(2015-Aug-08.35690198)
7.8332e-05 JED
period 1212.511281512818
3.32
1.0343e-05
2.832e-08
d
yr
n .2969044539947189 2.5326e-09 deg/d
Q 2.60671540011533 1.4824e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      21504 days (58.87 yr)  
   first obs. used      1955-04-14  
   last obs. used      2014-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53206  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:52:43  

Additional Information
 Earth MOID = .831385 AU 
 T_jup = 3.620 
[ 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 13.6 mag n/a MPO250293  

8474 Rettig           Discovered 1985 Apr. 15 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Terrence W. Rettig (b. 1946) is a planetary astronomer and educator at the University of Notre Dame who has contributed to the understanding of comets and the evolution of planet-forming regions around young stars. He has also served as the National Science Foundation Special Progams Director for Physics.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1985 GA1 = 1992 NQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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