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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905762953357387 8.3688e-08  
a 2.774320651124824 2.7143e-08 au
q 2.245600899360021 2.2744e-07 au
i 15.24575973291653 8.9318e-06 deg
node 75.23506616671399 2.6262e-05 deg
peri 303.9113417512024 3.2301e-05 deg
M 269.5081765494197 2.2225e-05 deg
tp 2457824.767971492230
(2017-Mar-12.26797149)
0.00010688 JED
period 1687.8482929523
4.62
2.477e-05
6.782e-08
d
yr
n .2132893113102636 3.1301e-09 deg/d
Q 3.303040402889627 3.2316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      846  
   data-arc span      23855 days (65.31 yr)  
   first obs. used      1950-04-22  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51363  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:44:06  

Additional Information
 Earth MOID = 1.28685 au 
 Jupiter MOID = 2.24129 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 13.3 mag n/a MPO344429  

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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