Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2952408345284547 5.6808e-08  
a 2.360205491784241 1.3064e-08 AU
q 1.66337645273122 1.3408e-07 AU
i 22.17983415111295 1.0236e-05 deg
node 250.0989517561944 1.7838e-05 deg
peri 80.17735709618171 2.7033e-05 deg
M 351.7665742299388 2.1694e-05 deg
tp 2457030.790136143022
(2015-Jan-08.29013614)
7.9955e-05 JED
period 1324.412136092747
3.63
1.0997e-05
3.011e-08
d
yr
n .2718187112525747 2.2569e-09 deg/d
Q 3.057034530837262 1.6922e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      12191 days (33.38 yr)  
   first obs. used      1981-04-25  
   last obs. used      2014-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54285  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:11:17  

Additional Information
 Earth MOID = .799753 AU 
 T_jup = 3.396 
[ 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 MPO299000  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jan-30 10:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin