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22394 Kondouakira (1994 TO)
Classification: Main-belt Asteroid          SPK-ID: 2022394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910306835671904 1.0231e-08  
a 2.678007598650095 9.8488e-09 au
q 2.166425976481838 2.6046e-08 au
i 11.11899834985855 7.1007e-07 deg
node 6.071899279794918 4.9781e-06 deg
peri 290.5202211129826 8.3138e-06 deg
M 94.50361259979368 5.668e-06 deg
tp 2458976.294198440377
(2020-May-06.79419844)
2.4724e-05 TDB
period 1600.722812598538
4.38
8.8303e-06
2.418e-08
d
yr
n .2248984003767605 1.2406e-09 deg/d
Q 3.189589220818353 1.173e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2033  
   data-arc span      17656 days (48.34 yr)  
   first obs. used      1972-10-05  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:15:10  

Additional Information
 Earth MOID = 1.18059 au 
 Jupiter MOID = 2.16754 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457398.5 (2016-Jan-11.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905040575124928 1.0244e-08  
q 2.168659873707876 2.6175e-08 au
tp 2457376.340835876595
(2015-Dec-19.84083588)
2.5145e-05 TDB
node 6.132142535250028 4.9761e-06 deg
peri 290.8138877346165 8.3415e-06 deg
i 11.11828557841411 7.1032e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2033  
   data-arc span      17656 days (48.34 yr)  
   first obs. used      1972-10-05  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:15:10  

Additional Information
 Jupiter MOID = 2.16754 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.049308474163919E-16 -2.563617095461208E-16 3.46717893483487E-14 2.916953850885792E-14 -1.142987264316303E-14 2.748761404589514E-15
q -2.563617095461208E-16 6.851524172277282E-16 -1.352018963561863E-13 -7.612031507540441E-14 1.718697009367962E-14 -7.442033585886517E-15
tp 3.46717893483487E-14 -1.352018963561863E-13 6.322513187236984E-10 -5.778964396227754E-13 1.7929367203428E-10 3.337198263303679E-12
node 2.916953850885792E-14 -7.612031507540441E-14 -5.778964396227754E-13 2.476137026367699E-11 -2.132568096861937E-11 1.030221923773822E-12
peri -1.142987264316303E-14 1.718697009367962E-14 1.7929367203428E-10 -2.132568096861937E-11 6.958105675675899E-11 9.122138941138345E-14
i 2.748761404589514E-15 -7.442033585886517E-15 3.337198263303679E-12 1.030221923773822E-12 9.122138941138345E-14 5.045577961547754E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.81   n/a E2021B10  
diameter diameter 9.362 km 0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.116   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22394 Kondouakira           Discovered 1994 Oct. 2 by K. Endate and K. Watanabe at Kitami.
Akira Kondou (b. 1943) has been director of the Saga City Hoshizora Astronomy Center since 2016. He is a widely respected astronomy scholar and a keen popularizer of astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-12-12Last Updated: 2019-12-13

Alternate Designations
 1994 TO = 1972 TA3 = 1985 QE1 = 1985 RX1 = 1999 XO208 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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