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4411 Kochibunkyo (1990 AF)
Classification: Main-belt Asteroid          SPK-ID: 2004411
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09184130057960983 2.4187e-08  
a 2.167859570468993 6.1148e-09 au
q 1.968760528043167 5.2965e-08 au
i 2.255248869324322 2.8627e-06 deg
node 88.44784430581539 0.00011272 deg
peri 10.6849769320684 0.00011594 deg
M 204.1213908973432 2.7952e-05 deg
tp 2459505.311415417647
(2021-Oct-17.81141542)
9.1382e-05 TDB
period 1165.856627772895
3.19
4.9327e-06
1.35e-08
d
yr
n .3087858244522728 1.3065e-09 deg/d
Q 2.36695861289482 6.6764e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2253  
   data-arc span      16573 days (45.37 yr)  
   first obs. used      1973-12-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:26:10  

Additional Information
 Earth MOID = .985682 au 
 Jupiter MOID = 2.73211 au 
 T_jup = 3.685 
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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 14.0   n/a MPO473827  
diameter diameter 4.433 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.6958 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Molnar, L.A.; Haegert, M.J.; Beaumonts, C.N.; Block, M.J.; et al. (2008) Minor Planet Bull. 35, 9-12.]
geometric albedo albedo 0.271   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4411 Kochibunkyo (1990 AF)          Discovered 1990-Jan-03 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 AF = 1973 YL3 = 1976 YP = 1979 TU2 = 1979 WZ7 = 1982 SF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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