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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1911449665774358 2.7716e-08  
a 2.678117745069791 1.0683e-08 au
q 2.166209018197989 7.4375e-08 au
i 11.11894326340026 4.2411e-06 deg
node 6.072195316228827 1.4969e-05 deg
peri 290.5210726665348 1.9074e-05 deg
M 50.41085749398349 1.013e-05 deg
tp 2458976.336699867883
(2020-May-06.83669987)
4.5295e-05 TDB
period 1600.821570178477
4.38
9.5781e-06
2.622e-08
d
yr
n .2248845259874048 1.3455e-09 deg/d
Q 3.190026471941595 1.2725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      17632 days (48.27 yr)  
   first obs. used      1972-10-05  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:57:33  

Additional Information
 Earth MOID = 1.17895 au 
 Jupiter MOID = 2.16808 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457376.5 (2015-Dec-20.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .190487472743658 2.7718e-08  
q 2.168660711076936 7.4428e-08 au
tp 2457376.346495829558
(2015-Dec-19.84649583)
4.8497e-05 TDB
node 6.132351440272926 1.4968e-05 deg
peri 290.8156180341245 1.9097e-05 deg
i 11.11826004505964 4.2405e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1985  
   data-arc span      17632 days (48.27 yr)  
   first obs. used      1972-10-05  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:57:33  

Additional Information
 Jupiter MOID = 2.16808 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.682778062837862E-16 -2.048829107502522E-15 3.701946543383236E-13 -2.343516049432545E-15 8.767063294830252E-14 -1.12102968074746E-16
q -2.048829107502522E-15 5.539468935418795E-15 -1.161543384119954E-12 6.848859186273166E-15 -2.751686888678108E-13 8.13871292119649E-16
tp 3.701946543383236E-13 -1.161543384119954E-12 2.351947411361616E-9 -1.120985067777845E-11 5.818568374365684E-10 -1.396351963728813E-12
node -2.343516049432545E-15 6.848859186273166E-15 -1.120985067777845E-11 2.240301821660962E-10 -2.220801366442185E-10 -4.871526830245934E-12
peri 8.767063294830252E-14 -2.751686888678108E-13 5.818568374365684E-10 -2.220801366442185E-10 3.647059590125251E-10 4.552321431877839E-12
i -1.12102968074746E-16 8.13871292119649E-16 -1.396351963728813E-12 -4.871526830245934E-12 4.552321431877839E-12 1.798189688732308E-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 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

[ show close-approach data ]
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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