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15716 Narahara (1989 WY1)
Classification: Main-belt Asteroid          SPK-ID: 2015716
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1900456138120517 4.1136e-08  
a 2.775573773753305 1.6462e-08 au
q 2.248088152239725 1.1459e-07 au
i 15.24306920464 5.0572e-06 deg
node 75.23156208061953 1.7968e-05 deg
peri 303.4991814130859 2.2222e-05 deg
M 251.1905510571138 1.4148e-05 deg
tp 2459510.995243311296
(2021-Oct-23.49524331)
6.8233e-05 TDB
period 1688.991989000252
4.62
1.5026e-05
4.114e-08
d
yr
n .2131448830690377 1.8962e-09 deg/d
Q 3.303059395266884 1.959e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1404  
   data-arc span      25222 days (69.05 yr)  
   first obs. used      1950-04-22  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47217  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:21:14  

Additional Information
 Earth MOID = 1.29107 au 
 Jupiter MOID = 2.24261 au 
 T_jup = 3.258 
[ 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 13.3   n/a MPO344429  
diameter diameter 5.735 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.339   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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