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9960 Sekine (1991 VE4)
Classification: Main-belt Asteroid          SPK-ID: 2009960
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1877994626513845 5.6864e-08  
a 2.197824489367659 1.6294e-08 AU
q 1.785074231262359 1.2855e-07 AU
i 4.835113959361021 6.2774e-06 deg
node 147.1426090131543 6.2641e-05 deg
peri 205.6408856415519 6.4744e-05 deg
M 66.95273521683687 2.083e-05 deg
tp 2456779.163130911848
(2014-May-01.66313091)
6.727e-05 JED
period 1190.112287626105
3.26
1.3235e-05
3.624e-08
d
yr
n .3024924654110457 3.3639e-09 deg/d
Q 2.610574747472959 1.9354e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1058  
   data-arc span      13055 days (35.74 yr)  
   first obs. used      1978-11-24  
   last obs. used      2014-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51196  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:56  

Additional Information
 Earth MOID = .781106 AU 
 T_jup = 3.640 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO263438  

9960 Sekine           Discovered 1991 Nov. 4 by S. Otomo at Kiyosato.
Masumi Sekine (b. 1950) is the president of astromomical society at Ageo city. He has been involved with the organization of the annual Chichibu star party since 1983.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1991 VE4 = 1978 WD = 1981 QZ1 = 1988 YX = 1994 PG38 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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