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26218 (1997 WJ13)
Classification: Main-belt Asteroid          SPK-ID: 2026218
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0510725391445139 4.9029e-08  
a 2.993573437392492 1.8344e-08 au
q 2.840684040829287 1.4707e-07 au
i 7.995197250726084 3.9215e-06 deg
node 262.5571101806663 4.178e-05 deg
peri 125.9507252582504 6.0536e-05 deg
M 158.9705025963023 4.4989e-05 deg
tp 2458165.094465185625
(2018-Feb-15.59446519)
0.0002346 TDB
period 1891.835199747115
5.18
1.7389e-05
4.761e-08
d
yr
n .1902914165293689 1.7491e-09 deg/d
Q 3.146462833955697 1.9281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1229  
   data-arc span      8218 days (22.50 yr)  
   first obs. used      1997-11-24  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:30:13  

Additional Information
 Earth MOID = 1.85573 au 
 Jupiter MOID = 2.16845 au 
 T_jup = 3.238 
[ 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 13.7   n/a MPO324551  
diameter diameter 6.283 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.163   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26218 (1997 WJ13)          Discovered 1997-Nov-24 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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