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15716 Narahara (1989 WY1)
Classification: Main-belt Asteroid          SPK-ID: 2015716
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906583849293134 8.8019e-08  
a 2.773771419105104 3.0798e-08 AU
q 2.244928640175435 2.3624e-07 AU
i 15.2470553605268 9.0753e-06 deg
node 75.23411326335274 2.8151e-05 deg
peri 303.9864058543917 3.4575e-05 deg
M 184.08683974661 2.1794e-05 deg
tp 2457825.018225919642
(2017-Mar-12.51822592)
0.00010679 JED
period 1687.347102988283
4.62
2.8103e-05
7.694e-08
d
yr
n .2133526642872957 3.5534e-09 deg/d
Q 3.302614198034772 3.667e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      23716 days (64.93 yr)  
   first obs. used      1950-04-22  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50546  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:53:22  

Additional Information
 Earth MOID = 1.28735 AU 
 T_jup = 3.259 
[ 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 13.2 mag n/a MPO259454  

15716 Narahara           Discovered 1989 Nov. 29 by A. Takahashi and K. Watanabe at Kitami.
Hiroshi Narahara (b. 1968) is a coach for the Chunichi Dragons and a friend of the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

[ show close-approach data ]
Alternate Designations
 1989 WY1 = 2000 BD29 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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