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

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2943742992237743 3.8594e-08  
a 2.360292284558021 7.8989e-09 au
q 1.665482897327972 9.0552e-08 au
i 22.18918351866185 4.3928e-06 deg
node 250.0042080105048 1.1398e-05 deg
peri 80.3065768063486 1.2921e-05 deg
M 229.5567952052358 6.7837e-06 deg
tp 2459680.416925216198
(2022-Apr-10.91692522)
2.5821e-05 TDB
period 1324.485191464461
3.63
6.6487e-06
1.82e-08
d
yr
n .2718037183956388 1.3644e-09 deg/d
Q 3.05510167178807 1.0224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1412  
   data-arc span      14576 days (39.91 yr)  
   first obs. used      1981-04-25  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45978  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:09:07  

Additional Information
 Earth MOID = .799774 au 
 Jupiter MOID = 2.604 au 
 T_jup = 3.397 
[ 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 13.86   n/a MPCxxxxx  
rotation period rot_per 4.296 h n/a LCDB (Rev. 2020-October); 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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