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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 | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1911449654987668 1.0229e-08  
a 2.678117744749462 9.9161e-09 au
q 2.166209020827691 2.6079e-08 au
i 11.11894691168798 7.1011e-07 deg
node 6.072236326916537 4.9783e-06 deg
peri 290.5210415928474 8.3092e-06 deg
M 50.4108503664163 5.607e-06 deg
tp 2458976.336731602444
(2020-May-06.83673160)
2.4704e-05 TDB
period 1600.821569891266
4.38
8.8909e-06
2.434e-08
d
yr
n .2248845260277525 1.249e-09 deg/d
Q 3.190026468671233 1.1812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2032  
   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      .46168  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:05:21  

Additional Information
 Earth MOID = 1.17895 au 
 Jupiter MOID = 2.16808 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457397.5 (2016-Jan-10.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .190503249115962 1.0244e-08  
q 2.168659949415004 2.6176e-08 au
tp 2457376.341081178507
(2015-Dec-19.84108118)
2.5148e-05 TDB
node 6.132152032034071 4.9761e-06 deg
peri 290.8139636479034 8.3422e-06 deg
i 11.11828460532193 7.1033e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2032  
   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      .46168  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:05:21  

Additional Information
 Jupiter MOID = 2.16808 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.04934305436946E-16 -2.563729868019592E-16 3.469346069988818E-14 2.917058605283212E-14 -1.142444759878176E-14 2.748962794022468E-15
q -2.563729868019592E-16 6.851901200484404E-16 -1.352780719967324E-13 -7.612365499570205E-14 1.716764985571124E-14 -7.442699401926062E-15
tp 3.469346069988818E-14 -1.352780719967324E-13 6.324101730113132E-10 -5.716879178519726E-13 1.793345938380722E-10 3.338396590413423E-12
node 2.917058605283212E-14 -7.612365499570205E-14 -5.716879178519726E-13 2.476172016023866E-11 -2.13241722836183E-11 1.030290000631658E-12
peri -1.142444759878176E-14 1.716764985571124E-14 1.793345938380722E-10 -2.13241722836183E-11 6.959167585048054E-11 9.151201367536007E-14
i 2.748962794022468E-15 -7.442699401926062E-15 3.338396590413423E-12 1.030290000631658E-12 9.151201367536007E-14 5.045722814112067E-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 13.81   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

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