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120864 (1998 QK99)
Classification: Main-belt Asteroid          SPK-ID: 2120864
[ 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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346419086569798 6.9745e-08  
a 2.5983782482738 1.4516e-08 au
q 2.248527641513436 1.8581e-07 au
i 3.347022370478383 6.5448e-06 deg
node 29.3927452853765 6.9161e-05 deg
peri 356.0413280307102 7.1967e-05 deg
M 41.03873992856461 1.7389e-05 deg
tp 2458826.101196268816
(2019-Dec-08.60119627)		 7.3643e-05 TDB
period 1529.861039898217
4.19		 1.282e-05
3.51e-08		 d
yr
n .2353154898460262 1.9719e-09 deg/d
Q 2.948228855034165 1.647e-08 au
   Orbit Determination Parameters
   # obs. used (total)      498  
   data-arc span      9222 days (25.25 yr)  
   first obs. used      1994-10-07  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55159  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 17:05:00  

Additional Information
 Earth MOID = 1.25252 au 
 Jupiter MOID = 2.50015 au 
 T_jup = 3.401 
[ 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 16.2   n/a MPO493690  

120864 (1998 QK99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 QK99 = 2005 GC68 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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