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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1900456186145977 3.7497e-08  
a 2.775573780425528 1.5349e-08 au
q 2.248088144314101 1.0616e-07 au
i 15.24307048691221 4.7715e-06 deg
node 75.23157702085136 1.5062e-05 deg
peri 303.4991854493042 1.9351e-05 deg
M 251.1905351116774 1.38e-05 deg
tp 2459510.995319962390
(2021-Oct-23.49531996)
6.6777e-05 TDB
period 1688.991995090523
4.62
1.401e-05
3.836e-08
d
yr
n .2131448823004667 1.768e-09 deg/d
Q 3.303059416536955 1.8266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1606  
   data-arc span      25714 days (70.40 yr)  
   first obs. used      1950-04-22  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46349  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:31:49  

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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