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9993 Kumamoto (1997 VX5)
Classification: Main-belt Asteroid          SPK-ID: 2009993
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05344788180179193 2.1165e-08  
a 2.53822872253938 1.0263e-08 au
q 2.402565773791182 5.6341e-08 au
i 10.70535047975869 8.913e-07 deg
node 166.3737825269379 4.511e-06 deg
peri 158.9021215983079 1.8188e-05 deg
M 346.8782823912802 1.8658e-05 deg
tp 2459254.337234695356
(2021-Feb-08.83723470)
7.6562e-05 TDB
period 1477.047827751492
4.04
8.9587e-06
2.453e-08
d
yr
n .2437294129791502 1.4783e-09 deg/d
Q 2.673891671287578 1.0812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2078  
   data-arc span      14671 days (40.17 yr)  
   first obs. used      1980-08-04  
   last obs. used      2020-10-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:46:15  

Additional Information
 Earth MOID = 1.39269 au 
 Jupiter MOID = 2.51514 au 
 T_jup = 3.421 
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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 13.68   n/a E2021B10  
diameter diameter 6.426 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.187   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9993 Kumamoto           Discovered 1997 Nov. 6 by J. Kobayashi at the Kumamoto Civil Astronomical Observatory.
Kumamoto is the name of both a prefecture and its capital city---home of the discoverer---on the Japanese island of Kyushu. With Mt. Aso, it is home to the biggest crater of an active volcano in the world. The observatory was built in 1982 by raising funds from the citizens of Kumamoto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1997 VX5 = 1980 PE4 = 1988 NH1 = 1995 EB9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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