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308619 (2005 WT171)
Classification: Main-belt Asteroid          SPK-ID: 2308619
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2201000809253867 4.8367e-08  
a 2.628346558448013 1.9956e-08 au
q 2.049847268233644 1.2619e-07 au
i 3.394605626904073 5.946e-06 deg
node 99.77583324114154 9.9947e-05 deg
peri 292.6790800124242 0.00010174 deg
M 172.5647881113339 2.0076e-05 deg
tp 2458254.442928948396
(2018-May-15.94292895)
8.1127e-05 TDB
period 1556.404110700131
4.26
1.7725e-05
4.853e-08
d
yr
n .231302396032646 2.6342e-09 deg/d
Q 3.206845848662383 2.4348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      6692 days (18.32 yr)  
   first obs. used      2001-12-23  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52258  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:13:52  

Additional Information
 Earth MOID = 1.05886 au 
 Jupiter MOID = 2.23569 au 
 T_jup = 3.364 
[ 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 17.1   n/a MPO455273  
diameter diameter 2.442 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

308619 (2005 WT171)          Discovered 2005-Nov-30 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2005 WT171 = 2005 YD50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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