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JPL Small-Body Database Browser
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18726 (1998 KC2)
Classification: Mars-crossing Asteroid          SPK-ID: 2018726
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .311491772531852 4.7546e-08  
a 2.36343901701368 1.1429e-08 au
q 1.627247208333151 1.1157e-07 au
i 20.92293908801337 6.621e-06 deg
node 219.5316532515894 1.2332e-05 deg
peri 290.5446583075089 1.7097e-05 deg
M 324.4667529436668 9.0056e-06 deg
tp 2458731.492799232067
(2019-Sep-04.99279923)
3.3474e-05 TDB
period 1327.134771803497
3.63
9.6269e-06
2.636e-08
d
yr
n .2712610713309707 1.9677e-09 deg/d
Q 3.099630825694209 1.499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      14703 days (40.25 yr)  
   first obs. used      1978-11-28  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50522  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:44:52  

Additional Information
 Earth MOID = .743786 au 
 Jupiter MOID = 2.24982 au 
 T_jup = 3.398 
[ 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 15.1   n/a MPO416909  

18726 (1998 KC2)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KC2 = 1978 WT20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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