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120741 Iijimayuichi (1997 UJ22)
Classification: Main-belt Asteroid          SPK-ID: 2120741
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2516305955167785 4.6937e-08  
a 2.615530987016566 1.0292e-08 au
q 1.957383367161 1.2247e-07 au
i 4.791468282200097 5.1815e-06 deg
node 172.7267661777799 4.3612e-05 deg
peri 193.0879020974226 4.4245e-05 deg
M 184.8880508233668 7.3141e-06 deg
tp 2459952.038982964583
(2023-Jan-07.53898296)		 3.3511e-05 TDB
period 1545.034677184396
4.23		 9.1198e-06
2.497e-08		 d
yr
n .2330044790036999 1.3753e-09 deg/d
Q 3.273678606872133 1.2882e-08 au
   Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      9146 days (25.04 yr)  
   first obs. used      1995-03-09  
   last obs. used      2020-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50075  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:07  

Additional Information
 Earth MOID = .954479 au 
 Jupiter MOID = 2.18764 au 
 T_jup = 3.357 
[ 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 16.32   n/a E2021B55  

120741 Iijimayuichi           Discovered 1997 Oct. 26 by N. Sato at Chichibu.
Yuichi Iijima (1968-2012) was a Japanese aerospace system engineer of the Japan Aerospace Exploration Agency, who was one of the key members of the Japanese lunar orbiter SELENE.
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 2017-01-12Last Updated: 2017-01-17

Alternate Designations
 1997 UJ22 = 2001 QH11 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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