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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09205835848828087 8.881e-09  
a 2.166908167108632 5.0749e-09 au
q 1.967426158249762 1.9647e-08 au
i 2.255028627138001 6.8417e-07 deg
node 88.44091719818685 3.3378e-05 deg
peri 10.95906311271525 3.933e-05 deg
M 265.6177004603818 1.5349e-05 deg
tp 2459505.955001123325
(2021-Oct-18.45500112)
5.0181e-05 TDB
period 1165.089226907829
3.19
4.093e-06
1.121e-08
d
yr
n .3089892101701492 1.0855e-09 deg/d
Q 2.366390175967502 5.5421e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2900  
   data-arc span      17210 days (47.12 yr)  
   first obs. used      1973-12-25  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45261  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:19:10  

Additional Information
 Earth MOID = .984156 au 
 Jupiter MOID = 2.73148 au 
 T_jup = 3.685 
[ show covariance matrix ]

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 14.01   n/a E2021B10  
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. 2020-October); 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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