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74800 (1999 SK18)
Classification: Main-belt Asteroid          SPK-ID: 2074800
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 .2040841733790323 4.5684e-08  
a 2.282880066771672 1.1217e-08 au
q 1.816980375421105 1.0776e-07 au
i 6.379522129396238 4.5518e-06 deg
node 96.85306860430023 5.2952e-05 deg
peri 205.7615362974586 5.4954e-05 deg
M 35.57619264381861 1.8007e-05 deg
tp 2458875.996936344861
(2020-Jan-27.49693635)
6.2606e-05 TDB
period 1259.862272632417
3.45
9.2857e-06
2.542e-08
d
yr
n .2857455198240031 2.1061e-09 deg/d
Q 2.748779758122238 1.3506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      547  
   data-arc span      7206 days (19.73 yr)  
   first obs. used      1999-09-04  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62496  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:22:11  

Additional Information
 Earth MOID = .803901 au 
 Jupiter MOID = 2.4829 au 
 T_jup = 3.568 
[ 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 16.1   n/a MPO280229  

74800 (1999 SK18)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 SK18 = 2002 JS39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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