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JPL Small-Body Database Browser
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13015 Noradokei (1987 XC)
Classification: Main-belt Asteroid          SPK-ID: 2013015
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2645290520002616 6.9525e-08  
a 2.557314263597313 1.6495e-08 au
q 1.880830345781169 1.8186e-07 au
i 16.51373896236919 6.428e-06 deg
node 55.40291657970698 2.6861e-05 deg
peri 284.4961189903167 3.0369e-05 deg
M 31.83964795596832 2.1087e-05 deg
tp 2458868.388587874081
(2020-Jan-19.88858787)
8.6618e-05 TDB
period 1493.738512156371
4.09
1.4452e-05
3.957e-08
d
yr
n .241006037583045 2.3318e-09 deg/d
Q 3.233798181413458 2.0859e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1377  
   data-arc span      13625 days (37.30 yr)  
   first obs. used      1982-05-15  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47289  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 22:59:39  

Additional Information
 Earth MOID = .95126 au 
 Jupiter MOID = 2.43794 au 
 T_jup = 3.331 
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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 13.7   n/a MPO400131  
diameter diameter 6.260 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.164   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13015 Noradokei           Discovered 1987 Dec. 14 by T. Seki at Geisei.
Noradokei is a clock tower handmade by Hatakenaka Genma in 1897 at Aki city, Kochi prefecture, when clocks were still new to Japan. People working on the nearby fields were able to tell precise times from this clock. It is preserved as the city's cultural symbol.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-04-30Last Updated: 2018-05-06

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Alternate Designations
 1987 XC = 1982 JG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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