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118418 (1999 TP18)
Classification: Main-belt Asteroid          SPK-ID: 2118418
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1033413685217983 1.02e-07  
a 3.166822686124307 6.6919e-08 AU
q 2.839558895874344 3.3573e-07 AU
i 8.910366791820145 8.4495e-06 deg
node 208.9205926634419 5.5224e-05 deg
peri 128.1816290778422 7.2574e-05 deg
M 251.3311362686828 5.7298e-05 deg
tp 2457421.850530173134
(2016-Feb-03.35053017)
0.00034223 JED
period 2058.420261165062
5.64
6.5245e-05
1.786e-07
d
yr
n .1748913993861684 5.5435e-09 deg/d
Q 3.49408647637427 7.3834e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7508 days (20.56 yr)  
   first obs. used      1993-09-16  
   last obs. used      2014-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54989  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 15:56:55  

Additional Information
 Earth MOID = 1.84087 AU 
 T_jup = 3.176 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8 mag n/a MPO257551  

118418 (1999 TP18)          Discovered 1999-Oct-14 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 TP18 = 2004 RS42 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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