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129808 (1999 KF18)
Classification: Main-belt Asteroid          SPK-ID: 2129808
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2314387622886124 4.0939e-08  
a 2.375267085496741 1.3731e-08 au
q 1.825538211124496 9.2566e-08 au
i 12.24941639552012 5.3342e-06 deg
node 173.0583530913894 1.8685e-05 deg
peri 118.282153231836 2.1785e-05 deg
M 223.5285255531185 1.3504e-05 deg
tp 2459507.381552627464
(2021-Oct-19.88155263)
5.2879e-05 TDB
period 1337.109895569511
3.66
1.1595e-05
3.175e-08
d
yr
n .2692374061345694 2.3347e-09 deg/d
Q 2.924995959868987 1.6909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      535  
   data-arc span      9072 days (24.84 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50355  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:06:01  

Additional Information
 Earth MOID = .84624 au 
 Jupiter MOID = 2.40374 au 
 T_jup = 3.475 
[ 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 16.1   n/a MPO453776  
diameter diameter 2.654 km 0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129808 (1999 KF18)          Discovered 1999-May-17 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 KF18 = 2003 QO101 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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