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66181 (1998 WL17)
Classification: Main-belt Asteroid          SPK-ID: 2066181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1382655269202897 3.6806e-08  
a 2.3811941307124 7.4216e-09 au
q 2.051957069529949 8.8928e-08 au
i 3.211324034067883 5.0972e-06 deg
node 36.23680162786329 6.4198e-05 deg
peri 55.41951400067455 6.8047e-05 deg
M 337.2463909262419 1.963e-05 deg
tp 2459285.327842916308
(2021-Mar-11.82784292)
7.3149e-05 TDB
period 1342.117786715887
3.67
6.2746e-06
1.718e-08
d
yr
n .2682327911627688 1.254e-09 deg/d
Q 2.710431191894851 8.4478e-09 au
  Orbit Determination Parameters
   # obs. used (total)      705  
   data-arc span      9655 days (26.43 yr)  
   first obs. used      1994-09-05  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:04  

Additional Information
 Earth MOID = 1.07028 au 
 Jupiter MOID = 2.46262 au 
 T_jup = 3.523 
[ 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 16.23   n/a MPCxxxxx  
diameter diameter 3.221 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66181 (1998 WL17)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WL17 = 1994 RE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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