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JPL Small-Body Database Browser
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17818 (1998 FE118)
Classification: Main-belt Asteroid          SPK-ID: 2017818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05498698720544301 4.3903e-08  
a 2.766159423559591 1.3688e-08 au
q 2.614056650728104 1.2472e-07 au
i 9.140655996825794 4.176e-06 deg
node 223.244016493797 2.417e-05 deg
peri 326.2441587741614 4.07e-05 deg
M 306.9347733304114 3.3316e-05 deg
tp 2459248.197577632390
(2021-Feb-02.69757763)
0.00015586 TDB
period 1680.406050140627
4.60
1.2473e-05
3.415e-08
d
yr
n .2142339346908879 1.5901e-09 deg/d
Q 2.918262196391078 1.444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2046  
   data-arc span      10292 days (28.18 yr)  
   first obs. used      1991-11-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44109  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:12:52  

Additional Information
 Earth MOID = 1.61726 au 
 Jupiter MOID = 2.06577 au 
 T_jup = 3.319 
[ 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 12.9   n/a MPO458988  
diameter diameter 7.510 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.217   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17818 (1998 FE118)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 FE118 = 1991 XT3 = 1995 XX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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