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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2164609373656959 3.8823e-08  
a 3.173885271340377 1.9078e-08 au
q 2.486863090414863 1.2336e-07 au
i 11.65575890361569 4.3128e-06 deg
node 78.83907943567046 2.1836e-05 deg
peri 10.25627415464611 2.3815e-05 deg
M 236.9416187576382 1.0718e-05 deg
tp 2459706.482539206142
(2022-May-06.98253921)
6.334e-05 TDB
period 2065.310071108923
5.65
1.8621e-05
5.098e-08
d
yr
n .174307967135756 1.5716e-09 deg/d
Q 3.860907452265891 2.3207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1981  
   data-arc span      32394 days (88.69 yr)  
   first obs. used      1931-10-09  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46911  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:43:28  

Additional Information
 Earth MOID = 1.50418 au 
 Jupiter MOID = 1.39962 au 
 T_jup = 3.133 
[ 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-August); 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 00:02 Jupiter 1.5291412438331 1.52913975257982 1.52914273512723 2.18728223534163 1.91738436284171 2415739.479928624 2.48512673726683 433.731838491385 34.0762649209402 76.8259513428696 2005882.91813918 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
1912-Sep-11 19:17 00:02 Jupiter 1.43804511002107 1.43804431512491 1.43804590491822 2.49119877978841 2.24233181412442 2419657.303137627 1.84888184772813 186.173802402963 39.0770854733204 -88.1046112625706 2286822.5203178 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
1923-May-11 18:16 00:02 Jupiter 1.8806943743252 1.88069276829253 1.88069598039582 2.5741088275655 2.3927559770079 2423551.261078062 1.89174747064456 516.19947371247 32.9591247982924 82.695201355135 2117669.74492144 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
1998-Jan-30 22:34 < 00:01 Jupiter 1.89226378456373 1.89226308445575 1.89226448467161 2.1721542614824 1.95525095927907 2450844.440543500 0.634795711083484 58.9008810176831 15.889261186024 75.6047190526424 1839926.13108021 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
2008-Jul-09 19:19 < 00:01 Jupiter 1.45087997803019 1.45087945784091 1.45088049822417 2.20384673198412 1.92076601735499 2454657.305061779 0.327892272268805 148.598956669829 34.3093895541021 78.5885592423571 1978479.91646711 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
2019-Apr-08 03:05 < 00:01 Jupiter 1.50985264192606 1.50985216654735 1.50985311730658 2.51496501340756 2.28102069225755 2458581.628632621 0.320641519614522 156.617996134408 18.5859022480058 82.3110142047563 2435149.86818431 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
2104-Jul-25 01:14 00:02 Jupiter 1.75867698967283 1.75867550885712 1.75867847050014 1.60580128666964 1.27096345396515 2489735.551506984 2.30533002992298 291.545813098156 89.0560443262013 -84.283734391435 1787760.16518784 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
2115-Jan-26 16:48 00:02 Jupiter 1.41194701292398 1.41194647085053 1.41194755501613 2.2303476079758 1.94284760665277 2493573.200325373 1.9069273778708 329.231233227986 32.5634292071431 82.8859771434117 1932423.3475225 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43
2125-Oct-17 13:52 00:02 Jupiter 1.62661843694979 1.6266166612973 1.62662021260487 2.58689756319077 2.37709633755212 2497490.077689079 2.30296551937463 224.050482786256 64.4121282069695 76.1119778666653 1651316.0405995 T 31 CATAB v2.0f-lin.ifort 2020-Jun-23 15:43:39 2020-Jun-23 15:43

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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