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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714760772866772 5.3382e-08  
a 2.224399681276528 1.3049e-08 AU
q 1.842968349613494 1.1739e-07 AU
i 5.911042720959504 5.5698e-06 deg
node 132.6602250080148 5.569e-05 deg
peri 141.891444015872 5.8572e-05 deg
M 287.9030235052846 2.1707e-05 deg
tp 2457243.179010015923
(2015-Aug-08.67901002)
7.4419e-05 JED
period 1211.762931724827
3.32
1.0663e-05
2.919e-08
d
yr
n .2970878136101877 2.6143e-09 deg/d
Q 2.605831012939562 1.5287e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      21519 days (58.92 yr)  
   first obs. used      1955-04-14  
   last obs. used      2014-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51497  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:26:01  

Additional Information
 Earth MOID = .832266 AU 
 T_jup = 3.621 
[ 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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