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7287 Yokokurayama (1990 VN2)
Classification: Main-belt Asteroid          SPK-ID: 2007287
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2460656989150219 3.6242e-08  
a 2.916723874643453 1.4322e-08 au
q 2.199018175887181 1.0642e-07 au
i 14.00899884502408 3.7636e-06 deg
node 141.0726028436122 1.6498e-05 deg
peri 303.419541890457 1.7987e-05 deg
M 306.6908752356871 9.4243e-06 deg
tp 2459269.926589198436
(2021-Feb-24.42658920)
4.8841e-05 TDB
period 1819.455347283587
4.98
1.3401e-05
3.669e-08
d
yr
n .197861409755108 1.4573e-09 deg/d
Q 3.634429573399724 1.7846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1490  
   data-arc span      14711 days (40.28 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50964  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:25:50  

Additional Information
 Earth MOID = 1.24897 au 
 Jupiter MOID = 1.72636 au 
 T_jup = 3.192 
[ 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 13.3   n/a MPO448986  
diameter diameter 13.679 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.054   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

7287 Yokokurayama           Discovered 1990 Nov. 10 by T. Seki at Geisei.
Named for a mountain in Kochi prefecture that is a treasure house of rare plants. A museum was built on its summit in 1997.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1990 VN2 = 1979 OF11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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