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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1347761136236511 6.0515e-08  
a 2.598709518319799 1.2654e-08 au
q 2.248465549003867 1.5895e-07 au
i 3.34691359390371 5.1326e-06 deg
node 29.38588021262655 6.9009e-05 deg
peri 356.07492350 7.1759e-05 deg
M 88.05811022056429 1.7443e-05 deg
tp 2458826.215456512779
(2019-Dec-08.71545651)		 7.3486e-05 TDB
period 1530.153614674474
4.19		 1.1176e-05
3.06e-08		 d
yr
n .2352704960779946 1.7184e-09 deg/d
Q 2.948953487635733 1.4359e-08 au
   Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      9656 days (26.44 yr)  
   first obs. used      1994-10-07  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53545  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:29  

Additional Information
 Earth MOID = 1.25119 au 
 Jupiter MOID = 2.50052 au 
 T_jup = 3.400 
[ 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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