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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1382628204351125 5.91e-08  
a 2.653568298443171 1.8417e-08 AU
q 2.286678461283216 1.6241e-07 AU
i 13.4983603451998 7.0172e-06 deg
node 164.035636885865 2.2665e-05 deg
peri 59.10710256307774 3.3182e-05 deg
M 16.81761003482863 2.4247e-05 deg
tp 2456926.742598294018
(2014-Sep-26.24259829)
0.00010624 JED
period 1578.860763162186
4.32
1.6437e-05
4.5e-08
d
yr
n .2280125064853611 2.3738e-09 deg/d
Q 3.020458135603127 2.0964e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1146  
   data-arc span      11023 days (30.18 yr)  
   first obs. used      1984-04-19  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49533  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:52:33  

Additional Information
 Earth MOID = 1.31414 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. 2015-May); 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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