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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203656921098706 7.685e-08  
a 1.918013045061554 1.363e-08 au
q 1.687150077416959 1.4553e-07 au
i 24.1498049921557 7.5029e-06 deg
node 107.938089119405 1.9128e-05 deg
peri 307.7540903035379 5.1018e-05 deg
M 257.7003895046499 5.7616e-05 deg
tp 2457676.206649902206
(2016-Oct-14.70664990)
0.00015759 JED
period 970.2323741428678
2.66
1.0342e-05
2.831e-08
d
yr
n .3710451326859039 3.9552e-09 deg/d
Q 2.148876012706148 1.5271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      15363 days (42.06 yr)  
   first obs. used      1973-07-27  
   last obs. used      2015-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56762  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:16:02  

Additional Information
 Earth MOID = .753594 au 
 Jupiter MOID = 3.13149 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 15.1 mag n/a MPO344345  
rotation period rot_per 66.9 h n/a LCDB (Rev. 2015-December); 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, 267-276.]

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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