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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716266420852207 4.9986e-08  
a 2.22459226027036 7.9661e-09 au
q 1.842792960631387 1.1261e-07 au
i 5.911024823755788 4.517e-06 deg
node 132.6598967463295 5.3852e-05 deg
peri 141.910280442544 5.5993e-05 deg
M 46.72071242408727 1.3985e-05 deg
tp 2457243.217278415961
(2015-Aug-08.71727842)
4.7005e-05 JED
period 1211.920298994888
3.32
6.5097e-06
1.782e-08
d
yr
n .2970492368999577 1.5956e-09 deg/d
Q 2.606391559909333 9.3332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1349  
   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      .49004  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:36:38  

Additional Information
 Earth MOID = .829133 au 
 Jupiter MOID = 2.50919 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 13.7 mag n/a MPO337327  
rotation period rot_per 30.54 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Chiorny, V.; Benishek, V.; Pravec, P.; Kusnirak, P.; et al. (2015) CBET 4122.]

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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