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17612 Whiteknight (1995 UW6)
Classification: Main-belt Asteroid          SPK-ID: 2017612
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01647333664304944 4.1816e-08  
a 3.078330390927639 1.6726e-08 au
q 3.027620018099358 1.3105e-07 au
i 8.410291519871135 4.9201e-06 deg
node 29.46563647480794 2.3536e-05 deg
peri 18.63883118532927 0.0001218 deg
M 177.30516436094 0.00012067 deg
tp 2458028.894070658816
(2017-Oct-02.39407066)
0.00065826 TDB
period 1972.746455657565
5.40
1.6078e-05
4.402e-08
d
yr
n .1824867047499032 1.4873e-09 deg/d
Q 3.12904076375592 1.7002e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1234  
   data-arc span      17960 days (49.17 yr)  
   first obs. used      1971-04-16  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:12:15  

Additional Information
 Earth MOID = 2.03573 au 
 Jupiter MOID = 1.9194 au 
 T_jup = 3.212 
[ 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 14.0   n/a MPO250387  
diameter diameter 4.856 km 0.453 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.206   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17612 Whiteknight           Discovered 1995 Oct. 20 by N. Sato and T. Urata at Chichibu.
The White Knight is one of the chess pieces that make up the characters in Lewis Carroll's Through the Looking Glass and what Alice found there. He often falls off his horse. He and the Red Knight fight to decide whose prisoner Alice shall be.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02

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