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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714918120399548 1.5663e-08  
a 2.224675616185634 4.99e-09 au
q 1.843161963564856 3.5185e-08 au
i 5.911757496719069 3.4501e-07 deg
node 132.6244933114922 6.6114e-06 deg
peri 141.8974327114528 9.1458e-06 deg
M 279.6827281726972 5.0081e-06 deg
tp 2459666.898897381820
(2022-Mar-28.39889738)
1.7324e-05 TDB
period 1211.98841597561
3.32
4.0778e-06
1.116e-08
d
yr
n .2970325419407677 9.9938e-10 deg/d
Q 2.606189268806411 5.8458e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2886  
   data-arc span      24168 days (66.17 yr)  
   first obs. used      1955-04-14  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43949  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 01:37:07  

Additional Information
 Earth MOID = .830872 au 
 Jupiter MOID = 2.51422 au 
 T_jup = 3.620 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.79   n/a MPCxxxxx  
diameter diameter 4.197 km 0.593 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 30.54 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Chiorny, V.; Benishek, V.; Pravec, P.; Kusnirak, P.; et al. (2015) CBET 4122.]
[Oey, J.; Williams, H.; Groom, R.; Pray, D.; Benishek, V. (2017) Minor Planet Bull. 44, 193-199.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.354   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

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

Alternate Designations
 1985 GA1 = 1992 NQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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