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4252 Godwin (1985 RG4)
Classification: Main-belt Asteroid          SPK-ID: 2004252
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1385721196118216 4.468e-08  
a 2.654127811739181 1.5443e-08 au
q 2.286339695145797 1.1831e-07 au
i 13.49881333748418 6.424e-06 deg
node 164.0316936130506 2.0142e-05 deg
peri 59.19035984202931 3.1544e-05 deg
M 153.4836885541562 2.3324e-05 deg
tp 2456927.149940112064
(2014-Sep-26.64994011)
0.00010229 JED
period 1579.360151187173
4.32
1.3785e-05
3.774e-08
d
yr
n .2279404097471975 1.9895e-09 deg/d
Q 3.021915928332565 1.7584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1314  
   data-arc span      11556 days (31.64 yr)  
   first obs. used      1984-04-19  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49561  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:51:37  

Additional Information
 Earth MOID = 1.31212 au 
 Jupiter MOID = 2.02316 au 
 T_jup = 3.336 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO298992  
rotation period rot_per 11.623 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Casalnuovo, G.B. (2015) Minor Planet Bul. 42, 139-141.]

4252 Godwin           Discovered 1985 Sept. 11 by H. Debehogne at the European Southern Observatory.
Richard Godwin (b. 1955), a board member of the Space Frontier Foundation, served as executive director of The Watch, a support organization for NEO detection. His brother Robert Godwin (b. 1958) is a space expert and space-history researcher. Together they founded a space book company and write extensively on space.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

Alternate Designations
 1985 RG4 = 1984 HE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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