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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2462227168923493 1.7363e-08  
a 2.917287716499847 9.4232e-09 au
q 2.198985208986577 5.1098e-08 au
i 14.008906244989 8.0868e-07 deg
node 141.071691033163 3.1479e-06 deg
peri 303.4101305389395 3.3577e-06 deg
M 346.2762861743771 2.2245e-06 deg
tp 2459269.880348102911
(2021-Feb-24.38034810)
1.1455e-05 TDB
period 1819.98296047349
4.98
8.8181e-06
2.414e-08
d
yr
n .1978040497183236 9.5839e-10 deg/d
Q 3.635590224013117 1.1743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2108  
   data-arc span      15209 days (41.64 yr)  
   first obs. used      1979-07-24  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:34:20  

Additional Information
 Earth MOID = 1.2487 au 
 Jupiter MOID = 1.72553 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 13.34   n/a E2021B10  
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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