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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129480523643561 3.9568e-08  
a 3.185830033684513 2.0444e-08 au
q 2.507413732847525 1.2358e-07 au
i 11.6829144192966 4.4848e-06 deg
node 78.91454292629516 2.2265e-05 deg
peri 9.18770565752976 2.4561e-05 deg
M 168.7580698727789 1.1024e-05 deg
tp 2457626.869031933721
6.2729e-05 TDB
period 2076.980074304572
n .173328576645367 1.6684e-09 deg/d
Q 3.864246334521501 2.4797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1877  
   data-arc span      32090 days (87.86 yr)  
   first obs. used      1931-10-09  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47774  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:23:42  

Additional Information
 Earth MOID = 1.52447 au 
 Jupiter MOID = 1.39812 au 
 T_jup = 3.131 
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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 11.0   n/a MPO435719  
diameter diameter 17.405 km 3.724 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 14.275 h n/a LCDB (Rev. 2019-January); 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] (  

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

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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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