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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896948881141537 2.5604e-08  
a 2.777271480721574 1.4869e-08 au
q 2.250437277923465 7.5369e-08 au
i 15.23445658850751 1.5003e-06 deg
node 75.22073655430144 3.3821e-06 deg
peri 303.3155964356217 7.6433e-06 deg
M 293.9668453870942 7.6493e-06 deg
tp 2459510.588366496430
(2021-Oct-23.08836650)
3.7169e-05 TDB
period 1690.541858754343
4.63
1.3576e-05
3.717e-08
d
yr
n .2129494742385509 1.7101e-09 deg/d
Q 3.304105683519683 1.7689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1625  
   data-arc span      25714 days (70.40 yr)  
   first obs. used      1950-04-22  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46317  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:06:47  

Additional Information
 Earth MOID = 1.29236 au 
 Jupiter MOID = 2.24356 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 13.35   n/a E2021B10  
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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