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85669 (1998 QK55)
Classification: Main-belt Asteroid          SPK-ID: 2085669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249933015603943 4.2397e-08  
a 2.331671058024878 8.33e-09 au
q 2.040227794329531 1.0046e-07 au
i 3.801642442019532 4.8651e-06 deg
node 191.9327825656969 5.469e-05 deg
peri 198.0238443024155 5.748e-05 deg
M 276.5029396415842 1.8307e-05 deg
tp 2458902.125486159310
(2020-Feb-22.62548616)
6.6786e-05 TDB
period 1300.467041010109
3.56
6.969e-06
1.908e-08
d
yr
n .2768236246267172 1.4835e-09 deg/d
Q 2.623114321720226 9.3712e-09 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      9646 days (26.41 yr)  
   first obs. used      1993-04-18  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56846  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:53:57  

Additional Information
 Earth MOID = 1.04489 au 
 Jupiter MOID = 2.79819 au 
 T_jup = 3.557 
[ 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 16.6   n/a MPO432400  
rotation period rot_per 4.368 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

85669 (1998 QK55)          Discovered 1998-Aug-26 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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