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344355 (2001 WK81)
Classification: Main-belt Asteroid          SPK-ID: 2344355
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962392012571223 5.0626e-08  
a 2.369295963837283 1.1227e-08 au
q 1.904347216352131 1.2226e-07 au
i 1.585178004110764 5.5957e-06 deg
node 164.9964715988704 0.00016362 deg
peri 212.4119578312537 0.0001646 deg
M 59.59950310097 1.341e-05 deg
tp 2458779.970071373191
(2019-Oct-23.47007137)		 4.9858e-05 TDB
period 1332.071077357006
3.65		 9.4681e-06
2.592e-08		 d
yr
n .2702558490454464 1.9209e-09 deg/d
Q 2.834244711322435 1.343e-08 au
   Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      6578 days (18.01 yr)  
   first obs. used      2001-10-24  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 10:24:16  

Additional Information
 Earth MOID = .906246 au 
 Jupiter MOID = 2.62727 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457612.5 (2016-Aug-12.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1973827980082133 5.0923e-08  
q 1.9009974843608 1.2307e-07 au
tp 2457446.120626344077
(2016-Feb-27.62062634)		 5.114e-05 TDB
node 165.0395741463199 0.00016353 deg
peri 211.947413900869 0.00016449 deg
i 1.585275654684276 5.6022e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      6578 days (18.01 yr)  
   first obs. used      2001-10-24  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 10:24:16  

Additional Information
 Jupiter MOID = 2.62727 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.593132435295072E-15 -6.251278927759605E-15 -2.544695648324089E-13 5.13704125106411E-14 -1.422536755297404E-13 -2.193820728994092E-15
q -6.251278927759605E-15 1.514599770425132E-14 4.5634121860421E-13 -1.240436924643667E-13 2.949340650718808E-13 5.440499425784675E-15
tp -2.544695648324089E-13 4.5634121860421E-13 2.615272496094146E-9 -1.111536989733418E-11 9.184966074781251E-10 -2.852563809898061E-14
node 5.13704125106411E-14 -1.240436924643667E-13 -1.111536989733418E-11 2.674355283718415E-8 -2.673634623713239E-8 1.820796967487072E-10
peri -1.422536755297404E-13 2.949340650718808E-13 9.184966074781251E-10 -2.673634623713239E-8 2.705719464567335E-8 -1.820125564214243E-10
i -2.193820728994092E-15 5.440499425784675E-15 -2.852563809898061E-14 1.820796967487072E-10 -1.820125564214243E-10 3.138515309135423E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO494802  

344355 (2001 WK81)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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