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26221 (1997 WG41)
Classification: Main-belt Asteroid          SPK-ID: 2026221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09379806227772429 3.9966e-08  
a 2.975052027926848 2.0122e-08 au
q 2.695997912531896 1.1997e-07 au
i 9.463434881374184 5.0849e-06 deg
node 254.6898284819076 3.0932e-05 deg
peri 47.48204766792695 4.3479e-05 deg
M 181.2585335916335 3.1958e-05 deg
tp 2459531.100090339699
(2021-Nov-12.60009034)
0.00016916 TDB
period 1874.305046579891
5.13
1.9016e-05
5.206e-08
d
yr
n .1920711896160683 1.9487e-09 deg/d
Q 3.2541061433218 2.201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      7771 days (21.28 yr)  
   first obs. used      1997-11-29  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54911  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:56:35  

Additional Information
 Earth MOID = 1.69027 au 
 Jupiter MOID = 1.92659 au 
 T_jup = 3.234 
[ 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 13.5   n/a MPO337481  
diameter diameter 7.002 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.172   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26221 (1997 WG41)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WG41 = 2000 JK26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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