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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 ]

[ show orbit diagram ]
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
(2016-Aug-26.36903193)
6.2729e-05 TDB
period 2076.980074304572
5.69
1.9992e-05
5.474e-08
d
yr
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 
[ 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 11.0   n/a MPO435719  
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. 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] (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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-Dec-20 23:31 00:03 Jupiter 1.529141331297 1.52913981249504 1.52914285014146 2.18728176695711 1.91738384504986 2415739.479987299 2.53459144115561 442.673596186762 34.5358197515348 76.8965090243607 1971080.64226393 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
1912-Sep-11 19:17 00:02 Jupiter 1.438045284855 1.43804448122405 1.43804608848685 2.49119860749415 2.2423316546436 2419657.303145151 1.88172710732457 193.933880847197 39.7791234035118 -88.3856171840758 2181399.81136173 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
1923-May-11 18:16 00:02 Jupiter 1.88069444596158 1.88069282312604 1.88069606883571 2.57410920958727 2.39275639515362 2423551.261064264 1.91995119118651 523.575793390098 33.5778802006075 82.7182359644286 2003384.70660425 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
1998-Jan-30 22:34 < 00:01 Jupiter 1.89226368589643 1.89226296226581 1.89226440952706 2.17215420466705 1.95525088422378 2450844.440539744 0.639339130220125 61.5737172452455 16.1216173032972 74.8613057607931 1811054.11210909 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
2008-Jul-09 19:19 < 00:01 Jupiter 1.45088009278503 1.45087956390116 1.4508806216736 2.20384630761869 1.92076555448664 2454657.305081505 0.335976233498009 149.427988155761 34.7350733468859 78.8314413302905 1940698.81374973 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
2019-Apr-08 03:05 < 00:01 Jupiter 1.5098528302219 1.50985230214225 1.50985335830369 2.51496496373671 2.28102066816406 2458581.628581816 0.349010930113523 162.203250624452 19.5336878342894 81.7933834490593 2292833.27672661 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
2104-Jul-25 01:14 00:02 Jupiter 1.75867690485955 1.75867535636046 1.75867845337133 1.60580123534877 1.27096337084885 2489735.551472991 2.39142499302957 302.868014968353 90.2985202258628 -84.6173741962591 1778810.30657281 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
2115-Jan-26 16:48 00:02 Jupiter 1.41194716221262 1.41194661146495 1.41194771297892 2.23034725707475 1.94284723647306 2493573.200306525 1.97103175596272 333.512951153928 32.8174525852056 82.9272417806064 1875412.56221064 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23
2125-Oct-17 13:52 00:02 Jupiter 1.62661863924443 1.62661677099758 1.62662050749479 2.58689766234077 2.37709647269643 2497490.077611531 2.38525497022693 238.814438854779 65.0789410760706 75.614388592121 1580229.41638084 T 28 CATAB v2.0f-lin.ifort 2019-Sep-23 19:23:51 2019-Sep-23 19:23

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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