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18811 (1999 KJ1)
Classification: Main-belt Asteroid          SPK-ID: 2018811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2521167958802945 3.3297e-08  
a 2.802470539964693 1.1987e-08 au
q 2.095920646879876 9.306e-08 au
i 9.711841659960099 4.0418e-06 deg
node 76.78683029377198 1.8812e-05 deg
peri 227.4885601959029 1.9894e-05 deg
M 181.1271221113356 7.0625e-06 deg
tp 2460051.935991250196
(2023-Apr-17.43599125)
3.6004e-05 TDB
period 1713.602198768533
4.69
1.0994e-05
3.01e-08
d
yr
n .2100837640490373 1.3479e-09 deg/d
Q 3.509020433049511 1.5009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1864  
   data-arc span      9173 days (25.11 yr)  
   first obs. used      1996-02-01  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48954  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:38:32  

Additional Information
 Earth MOID = 1.09264 au 
 Jupiter MOID = 1.78833 au 
 T_jup = 3.257 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.71   n/a E2021B10  

18811 (1999 KJ1)          Discovered 1999-May-18 by Korlevic, K. at Visnjan
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 KJ1 = 1996 CO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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