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24940 Sankichiyama (1997 JY4)
Classification: Main-belt Asteroid          SPK-ID: 2024940
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438792170586803 2.8641e-08  
a 2.52706739054569 9.7213e-09 au
q 2.163474912939454 7.1292e-08 au
i 11.95384101583005 3.8437e-06 deg
node 51.46356719615768 1.5089e-05 deg
peri 264.8129698979212 2.1605e-05 deg
M 196.4781641983658 1.7183e-05 deg
tp 2459666.995030643528
(2022-Mar-28.49503064)
7.169e-05 TDB
period 1467.31603064153
4.02
8.4669e-06
2.318e-08
d
yr
n .245345918999197 1.4157e-09 deg/d
Q 2.890659868151926 1.112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2042  
   data-arc span      8441 days (23.11 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:37:21  

Additional Information
 Earth MOID = 1.18968 au 
 Jupiter MOID = 2.43614 au 
 T_jup = 3.408 
[ 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 14.0   n/a MPO324539  

24940 Sankichiyama           Discovered 1997 May 1 by T. Okuni at Nanyo.
Sankichiyama mountain is located to the east of Kaminoyama, a hot-spring town in Yamagata prefecture. The mountain is loved by citizens as a hiking course.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110715/MPCPages.arcLast Updated: 2011-07-20

Alternate Designations
 1997 JY4 = 1998 VO10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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