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100669 (1997 WK50)
Classification: Main-belt Asteroid          SPK-ID: 2100669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3020875426909922 4.6568e-08  
a 2.584783641894044 1.3884e-08 au
q 1.803952703126399 1.1931e-07 au
i 3.062901305488426 5.1057e-06 deg
node 229.4722557874323 9.1967e-05 deg
peri 146.8738551522395 9.269e-05 deg
M 167.6985330934726 1.7428e-05 deg
tp 2458293.431508408426
(2018-Jun-23.93150841)
6.836e-05 TDB
period 1517.870504156928
4.16
1.223e-05
3.348e-08
d
yr
n .2371743828041213 1.911e-09 deg/d
Q 3.36561458066169 1.8079e-08 au
  Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      25066 days (68.63 yr)  
   first obs. used      1951-09-09  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:54:51  

Additional Information
 Earth MOID = .806543 au 
 Jupiter MOID = 2.10793 au 
 T_jup = 3.355 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456525.5 (2013-Aug-21.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .298856028731447 4.6139e-08  
q 1.814592553461412 1.1784e-07 au
tp 2456771.063277278802
(2014-Apr-23.56327728)
5.8895e-05 TDB
node 229.8502482510261 9.2482e-05 deg
peri 146.204116259742 9.3231e-05 deg
i 3.04982188790679 5.0885e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      25066 days (68.63 yr)  
   first obs. used      1951-09-09  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:54:51  

Additional Information
 Jupiter MOID = 2.10793 au 
 T_jup = 3.355 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.128833430722418E-15 -5.418195068638363E-15 2.19652898253053E-13 -8.226111515794282E-15 6.969662966970936E-14 -2.349652668206651E-17
q -5.418195068638363E-15 1.388609502853737E-14 -7.237780736474611E-14 1.737744073632741E-14 -8.431770581194586E-14 4.259880630906757E-16
tp 2.19652898253053E-13 -7.237780736474611E-14 3.468619168936117E-9 -3.069786904198791E-11 7.20488928180291E-10 2.256656815131388E-12
node -8.226111515794282E-15 1.737744073632741E-14 -3.069786904198791E-11 8.552975759379145E-9 -8.546517069059867E-9 -7.359312412106974E-11
peri 6.969662966970936E-14 -8.431770581194586E-14 7.20488928180291E-10 -8.546517069059867E-9 8.69203519999823E-9 7.390812782847672E-11
i -2.349652668206651E-17 4.259880630906757E-16 2.256656815131388E-12 -7.359312412106974E-11 7.390812782847672E-11 2.589234311076486E-11

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 15.9   n/a MPO417507  

100669 (1997 WK50)          Discovered 1997-Nov-28 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 WK50 = 2001 RF5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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