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23644 Yamaneko (1997 AW17)
Classification: Main-belt Asteroid          SPK-ID: 2023644
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1285802308657366 6.9587e-08  
a 2.394323149512772 1.5971e-08 AU
q 2.086460526181242 1.6889e-07 AU
i 2.13827307006933 5.2959e-06 deg
node 78.16026334890856 0.00019588 deg
peri 112.8558718823053 0.00019692 deg
M 247.5971271170737 2.3803e-05 deg
tp 2457423.020207413742
(2016-Feb-04.52020741)
9.0536e-05 JED
period 1353.232980329384
3.70
1.354e-05
3.707e-08
d
yr
n .2660295789660508 2.6618e-09 deg/d
Q 2.702185772844302 1.8025e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      6472 days (17.72 yr)  
   first obs. used      1997-01-13  
   last obs. used      2014-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56492  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:48:39  

Additional Information
 Earth MOID = 1.08874 AU 
 T_jup = 3.518 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4 mag n/a MPO266079  

23644 Yamaneko           Discovered 1997 Jan. 13 by A. Nakamura at Kuma Kogen.
The Yamaneko Group of Comet Observers, founded by K. Ichikawa and the discoverer in 1980, is the most prolific group of comet observers in Japan. The members have obtained some 12~300 astrometric and 6300 photometric observations, contributing them to the MPC and International Astronomical Quarterly, respectively.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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