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241442 Shandongkexie (2008 YN9)
Classification: Main-belt Asteroid          SPK-ID: 2241442
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01792821426579796 1.5332e-07  
a 3.099771359046791 7.2887e-08 AU
q 3.044197993946817 5.0205e-07 AU
i 11.88192560002387 1.136e-05 deg
node 109.807961505567 5.3014e-05 deg
peri 161.5654292231359 0.000378 deg
M 245.6037125761623 0.00037396 deg
tp 2457633.935425629690
(2016-Sep-02.43542563)
0.0020739 JED
period 1993.392953232942
5.46
7.0308e-05
1.925e-07
d
yr
n .1805966051079601 6.3697e-09 deg/d
Q 3.155344724146766 7.4194e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      7611 days (20.84 yr)  
   first obs. used      1994-06-07  
   last obs. used      2015-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63253  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 23:40:36  

Additional Information
 Earth MOID = 2.0306 AU 
 T_jup = 3.189 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO338716  

241442 Shandongkexie           Discovered 2008 Dec. 25 at Shandong University Observatory, Weihai.
`Shandongkexie' is the Chinese phonetic alphabet representation of the Shandong Association for Science and Technology. It is an important non-governmental organization in China, devoted to developing exchanges between scientists and promoting public scientific education.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110615/MPCPages.arcLast Updated: 2013-03-28

[ show close-approach data ]
Alternate Designations
 2008 YN9 = 2005 MX13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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