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

[ 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 .2942169313090127 3.8983e-08  
a 2.360623824492169 7.9418e-09 au
q 1.666088326875138 9.1433e-08 au
i 22.18907060147978 4.4525e-06 deg
node 250.0125865300857 1.1478e-05 deg
peri 80.28079158121191 1.3031e-05 deg
M 175.2267319234057 6.7434e-06 deg
tp 2458355.683018637953
(2018-Aug-25.18301864)
2.4121e-05 TDB
period 1324.7642682271
3.63
6.6854e-06
1.83e-08
d
yr
n .2717464598300038 1.3714e-09 deg/d
Q 3.0551593221092 1.0278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1347  
   data-arc span      14249 days (39.01 yr)  
   first obs. used      1981-04-25  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:44:56  

Additional Information
 Earth MOID = .801752 au 
 Jupiter MOID = 2.60399 au 
 T_jup = 3.396 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO452240  
rotation period rot_per 4.296 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 380-386.]

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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