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46635 (1994 WK2)
Classification: Main-belt Asteroid          SPK-ID: 2046635
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2256787127028584 1.8027e-08  
a 2.731102203577296 1.105e-08 au
q 2.114750574014032 5.0653e-08 au
i 9.798659419165904 8.1422e-07 deg
node 104.4771760559833 2.1921e-06 deg
peri 38.12742102074349 4.0587e-06 deg
M 263.9067062717668 6.1866e-06 deg
tp 2459836.543828756815
(2022-Sep-14.04382876)
3.0203e-05 TDB
period 1648.562269084853
4.51
1.0005e-05
2.739e-08
d
yr
n .2183720971606627 1.3253e-09 deg/d
Q 3.34745383314056 1.3544e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1667  
   data-arc span      14204 days (38.89 yr)  
   first obs. used      1982-02-20  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:24:46  

Additional Information
 Earth MOID = 1.13822 au 
 Jupiter MOID = 1.72773 au 
 T_jup = 3.296 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457019.5 (2014-Dec-28.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2224192123075087 1.7923e-08  
q 2.126642490397229 5.0314e-08 au
tp 2456531.222113929062
(2013-Aug-26.72211393)
2.1212e-05 TDB
node 104.5449461705627 2.1937e-06 deg
peri 37.73988259311386 4.1041e-06 deg
i 9.789454107110604 8.1289e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1667  
   data-arc span      14204 days (38.89 yr)  
   first obs. used      1982-02-20  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:24:46  

Additional Information
 Jupiter MOID = 1.72773 au 
 T_jup = 3.296 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.212416191535685E-16 -8.883380776839285E-16 1.581533345881227E-13 5.136656346489057E-15 5.504613672414345E-15 -2.956949836803862E-16
q -8.883380776839285E-16 2.531535625134869E-15 -4.183607969601512E-13 -1.407294771047343E-14 -7.132240737078041E-15 6.218371203513009E-16
tp 1.581533345881227E-13 -4.183607969601512E-13 4.499535977738904E-10 -1.310529684865761E-12 6.864179432301404E-11 -1.022900440933356E-12
node 5.136656346489057E-15 -1.407294771047343E-14 -1.310529684865761E-12 4.812206103686167E-12 -5.052155784335879E-12 5.90800253067207E-13
peri 5.504613672414345E-15 -7.132240737078041E-15 6.864179432301404E-11 -5.052155784335879E-12 1.684352551216933E-11 -6.505101839661476E-13
i -2.956949836803862E-16 6.218371203513009E-16 -1.022900440933356E-12 5.90800253067207E-13 -6.505101839661476E-13 6.607864932928952E-13

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 13.59   n/a E2021B10  
diameter diameter 7.907 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46635 (1994 WK2)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 WK2 = 1982 DY = 1999 XP136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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