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190960 (2001 WP20)
Classification: Main-belt Asteroid          SPK-ID: 2190960
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1618084058465803 4.1765e-08  
a 2.395540255490511 1.1172e-08 au
q 2.007921705608281 1.016e-07 au
i 3.122745875388918 5.4015e-06 deg
node 137.9333782302377 9.0617e-05 deg
peri 285.4092223394633 9.2856e-05 deg
M 48.31045807447687 2.0684e-05 deg
tp 2459018.763444927295
(2020-Jun-18.26344493)
7.7101e-05 TDB
period 1354.264944565673
3.71
9.4737e-06
2.594e-08
d
yr
n .265826861608277 1.8596e-09 deg/d
Q 2.78315880537274 1.298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      7011 days (19.20 yr)  
   first obs. used      2001-11-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55698  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:03:48  

Additional Information
 Earth MOID = 1.02323 au 
 Jupiter MOID = 2.52364 au 
 T_jup = 3.509 
[ 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 16.8   n/a MPO449948  
diameter diameter 2.483 km 0.745 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190960 (2001 WP20)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 2001 WP20 = 2001 XR255 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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