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74799 (1999 SC18)
Classification: Main-belt Asteroid          SPK-ID: 2074799
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991863159705154 4.0157e-08  
a 2.274427101077156 1.1699e-08 au
q 1.821392345870098 9.6268e-08 au
i 6.47926643791738 4.3614e-06 deg
node 69.97486889342245 3.6949e-05 deg
peri 270.0646968823109 3.871e-05 deg
M 20.9628056011251 1.1451e-05 deg
tp 2458927.545284971411
(2020-Mar-19.04528497)
3.9626e-05 TDB
period 1252.871295475954
3.43
9.6665e-06
2.647e-08
d
yr
n .2873399696360984 2.217e-09 deg/d
Q 2.727461856284214 1.4029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      7180 days (19.66 yr)  
   first obs. used      1999-09-13  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62284  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:42:04  

Additional Information
 Earth MOID = .827021 au 
 Jupiter MOID = 2.68549 au 
 T_jup = 3.575 
[ 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 16.3   n/a MPO474634  

74799 (1999 SC18)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 SC18 = 2002 KT4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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