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6986 Asamayama (1994 WE)
Classification: Main-belt Asteroid          SPK-ID: 2006986
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06286287997443964 3.3957e-08  
a 2.928531282750484 1.3834e-08 au
q 2.744435372221549 1.0173e-07 au
i 2.330227947538073 4.0503e-06 deg
node 163.0121557990275 9.7046e-05 deg
peri 306.2254735755684 0.00010295 deg
M 264.5833320813808 3.3998e-05 deg
tp 2459085.671156125334
(2020-Aug-24.17115613)
0.00017351 TDB
period 1830.51473097016
5.01
1.2971e-05
3.551e-08
d
yr
n .1966659944928181 1.3936e-09 deg/d
Q 3.11262719327942 1.4704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2002  
   data-arc span      10953 days (29.99 yr)  
   first obs. used      1989-11-04  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54439  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:58:29  

Additional Information
 Earth MOID = 1.76219 au 
 Jupiter MOID = 1.95535 au 
 T_jup = 3.273 
[ 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 13.7   n/a MPO358699  
diameter diameter 5.535 km 0.351 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.191   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6986 Asamayama           Discovered 1994 Nov. 24 by T. Kobayashi at Oizumi.
Mt. Asamayama is a triplex stratovolcano at the border of Gunma and Nagano prefectures, with an altitude of 2565 m above sea level. It has a 350-m-diameter crater called "Okama", where smoke still rises. It is known as one of the most active volcanoes in Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1994 WE = 1991 ET2 = 1993 PL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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