Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
23644 Yamaneko (1997 AW17)
Classification: Main-belt Asteroid          SPK-ID: 2023644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284876551273926 4.2528e-08  
a 2.395894003185128 9.4657e-09 au
q 2.088051200782089 1.0061e-07 au
i 2.136969504575127 3.9675e-06 deg
node 78.12342559723757 0.0001163 deg
peri 113.0582749207958 0.0001173 deg
M 112.3790835043434 1.4819e-05 deg
tp 2458777.653429303430
(2019-Oct-21.15342930)
5.5158e-05 TDB
period 1354.564930625029
3.71
8.0274e-06
2.198e-08
d
yr
n .2657679907849728 1.575e-09 deg/d
Q 2.703736805588167 1.0682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1124  
   data-arc span      8610 days (23.57 yr)  
   first obs. used      1997-01-13  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:27:44  

Additional Information
 Earth MOID = 1.08835 au 
 Jupiter MOID = 2.25034 au 
 T_jup = 3.517 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.45   n/a MPCxxxxx  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-06 15:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin