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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2514072680604784 4.7382e-08  
a 2.615984705243311 1.033e-08 au
q 1.958307137210094 1.2377e-07 au
i 4.790703778296603 5.2531e-06 deg
node 172.7269243119228 4.4762e-05 deg
peri 193.0915466270612 4.5404e-05 deg
M 138.2951274856277 7.2651e-06 deg
tp 2458406.815643007348
(2018-Oct-15.31564301)
3.0041e-05 TDB
period 1545.436722198085
4.23
9.1538e-06
2.506e-08
d
yr
n .2329438629411948 1.3798e-09 deg/d
Q 3.273662273276527 1.2927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      9095 days (24.90 yr)  
   first obs. used      1995-03-09  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:22:44  

Additional Information
 Earth MOID = .956965 au 
 Jupiter MOID = 2.18664 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 16.2   n/a MPO459568  

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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