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5475 Hanskennedy (1989 QO)
Classification: Inner Main-belt Asteroid          SPK-ID: 2005475
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204356275349514 7.7272e-08  
a 1.917961525661344 1.373e-08 AU
q 1.686970625730428 1.4624e-07 AU
i 24.15068633419452 7.831e-06 deg
node 107.9391366359871 1.9911e-05 deg
peri 307.8248656804298 5.2073e-05 deg
M 109.1907741881917 5.6749e-05 deg
tp 2456706.232901016604
(2014-Feb-17.73290102)
0.00015058 JED
period 970.1932825518785
2.66
1.0418e-05
2.852e-08
d
yr
n .3710600830518015 3.9845e-09 deg/d
Q 2.148952425592261 1.5384e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      15303 days (41.90 yr)  
   first obs. used      1973-07-27  
   last obs. used      2015-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56465  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:51:35  

Additional Information
 Earth MOID = .753444 AU 
 T_jup = 3.813 
[ 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 15.0 mag n/a MPO337299  
rotation period rot_per 66.9 h n/a LCDB (Rev. 2015-July); 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:
[Warner, B.D. (2015) Minor Planet Bul. 42, submitted (MBA gaggle)]

5475 Hanskennedy           Discovered 1989 Aug. 26 by R. H. McNaught at Siding Spring.
Hans D. Kennedy (b. 1924) is a Dutch-Australian astronomer who has specialised in photometry of eclipsing binary stars. He founded, developed and operated several observatory installations used for precision photometry.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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