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2301 Whitford (1965 WJ)
Classification: Main-belt Asteroid          SPK-ID: 2002301
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2170617015441836 2.1639e-08  
a 3.169616179685365 1.6455e-08 au
q 2.481613898480885 7.4829e-08 au
i 11.64986355894341 4.6995e-07 deg
node 78.7852536283086 5.1881e-06 deg
peri 10.65386763888484 8.5634e-06 deg
M 271.4771176319051 5.3775e-06 deg
tp 2459707.329033356647
(2022-May-07.82903336)
3.2798e-05 TDB
period 2061.144498771469
5.64
1.605e-05
4.394e-08
d
yr
n .1746602434785991 1.3601e-09 deg/d
Q 3.857618460889845 2.0026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2275  
   data-arc span      32596 days (89.24 yr)  
   first obs. used      1931-10-09  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:36:44  

Additional Information
 Earth MOID = 1.49872 au 
 Jupiter MOID = 1.40274 au 
 T_jup = 3.134 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.15   n/a E2021B10  
diameter diameter 17.405 km 3.724 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 14.275 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.240   0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2301 Whitford (1965 WJ)          Discovered 1965-Nov-20 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1965 WJ = 1931 TR2 = 1944 BB = 1955 BC = 1967 GK1 = 1974 MD = 1976 UA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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