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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1251023699144453 4.1387e-08  
a 2.331468978597402 7.9061e-09 au
q 2.039796683992856 9.8356e-08 au
i 3.801659691481615 4.7884e-06 deg
node 191.9260652658297 5.3253e-05 deg
peri 198.1441561913848 5.6106e-05 deg
M 27.1517960106407 1.8275e-05 deg
tp 2458902.429373375993
(2020-Feb-22.92937338)
6.5809e-05 TDB
period 1300.297982896104
3.56
6.614e-06
1.811e-08
d
yr
n .2768596158229713 1.4083e-09 deg/d
Q 2.623141273201948 8.8951e-09 au
  Orbit Determination Parameters
   # obs. used (total)      564  
   data-arc span      9718 days (26.61 yr)  
   first obs. used      1993-04-18  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54869  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:36:54  

Additional Information
 Earth MOID = 1.0452 au 
 Jupiter MOID = 2.79884 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-August); 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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