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JPL Small-Body Database Browser
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10540 Hachigoroh (1991 VP4)
Classification: Main-belt Asteroid          SPK-ID: 2010540
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1695649433001082 4.3053e-08  
a 3.10229717400263 1.7068e-08 au
q 2.576256329592788 1.3577e-07 au
i 6.735504003416306 4.407e-06 deg
node 110.6444721975161 4.7277e-05 deg
peri 309.548923179733 5.0273e-05 deg
M 75.55178261862918 1.6238e-05 deg
tp 2458581.643038630745
(2019-Apr-08.14303863)
8.9329e-05 TDB
period 1995.829891322131
5.46
1.6471e-05
4.51e-08
d
yr
n .1803760939573459 1.4886e-09 deg/d
Q 3.628338018412472 1.9962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1447  
   data-arc span      14281 days (39.10 yr)  
   first obs. used      1980-11-29  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50315  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:07:08  

Additional Information
 Earth MOID = 1.59566 au 
 Jupiter MOID = 1.72158 au 
 T_jup = 3.189 
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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 13.3   n/a MPO502250  
diameter diameter 11.112 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10540 Hachigoroh           Discovered 1991 Nov. 13 by S. Otomo at Kiyosato.
Hachigoroh Kikuchi (1926-1999) was the executive committee chief of the Haramura star party and was instrumental in getting it started. The name was suggested by S. Horiuchi.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

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Alternate Designations
 1991 VP4 = 1980 WZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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