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5251 Bradwood (1985 KA)
Classification: Mars-crossing Asteroid          SPK-ID: 2005251
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2949180488623117 5.0886e-08  
a 2.360044313871745 1.2931e-08 au
q 1.664024649596097 1.1952e-07 au
i 22.1782582409909 9.4508e-06 deg
node 250.0880552771202 1.5744e-05 deg
peri 80.17291725693819 2.4679e-05 deg
M 154.9200032532514 2.2081e-05 deg
tp 2457030.619679285211
(2015-Jan-08.11967929)
7.8257e-05 JED
period 1324.276472689902
3.63
1.0884e-05
2.98e-08
d
yr
n .2718465572893245 2.2342e-09 deg/d
Q 3.056063978147393 1.6745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      12730 days (34.85 yr)  
   first obs. used      1981-04-25  
   last obs. used      2016-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52933  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:48:12  

Additional Information
 Earth MOID = .799183 au 
 Jupiter MOID = 2.59412 au 
 T_jup = 3.397 
[ 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 13.7 mag n/a MPO365311  
rotation period rot_per 4.3013 h n/a LCDB (Rev. 2016-February); 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. (2016) Astron. J. 150, A75.]

5251 Bradwood           Discovered 1985 May 18 by A. C. Gilmore and P. M. Kilmartin at Lake Tekapo.
Frank Bradshaw Wood (1915-1997) was a pioneer of photoelectric photometry and an expert on close binary stars. As a professor at the University of Pennsylvania, he supported the founding of Mt. John Observatory and promoted astronomical research there.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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