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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 ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714760672676315 5.0006e-08  
a 2.224399673672454 7.9947e-09 AU
q 1.842968365599699 1.1259e-07 AU
i 5.911045217500225 4.5172e-06 deg
node 132.660230889861 5.3862e-05 deg
peri 141.8914306562441 5.6007e-05 deg
M 287.9030363467949 1.3952e-05 deg
tp 2457243.178965546904
(2015-Aug-08.67896555)
4.7047e-05 JED
period 1211.762925511239
3.32
6.5328e-06
1.789e-08
d
yr
n .2970878151335725 1.6016e-09 deg/d
Q 2.60583098174521 9.3656e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1348  
   data-arc span      22049 days (60.37 yr)  
   first obs. used      1955-04-14  
   last obs. used      2015-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49019  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:24:53  

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 13.7 mag n/a MPO337327  

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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