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96623 Leani (1999 ET4)
Classification: Main-belt Asteroid          SPK-ID: 2096623
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1327896984262464 3.9824e-08  
a 2.342205481278155 1.079e-08 au
q 2.031184721766928 9.2186e-08 au
i 6.254666646393451 4.5768e-06 deg
node 23.98382081263211 3.9919e-05 deg
peri 275.8786545442752 4.3715e-05 deg
M 281.9646994351773 1.8393e-05 deg
tp 2459484.307928004914
(2021-Sep-26.80792800)
6.7734e-05 TDB
period 1309.290197413892
3.58
9.0474e-06
2.477e-08
d
yr
n .2749581419849255 1.9e-09 deg/d
Q 2.653226240789383 1.2223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      7716 days (21.13 yr)  
   first obs. used      1999-03-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56225  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:12:31  

Additional Information
 Earth MOID = 1.02553 au 
 Jupiter MOID = 2.55696 au 
 T_jup = 3.544 
[ 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 15.98   n/a E2021B10  

96623 Leani           Discovered 1999 Mar. 14 by M. M. M. Santangelo at Monte Agliale Astronomical Observatory.
Achille Leani (b. 1924) was one of the founders of the International Union of Amateur Astronomers. Formerly a teacher, he was also a council member of the Società Astronomica Italiana. He founded the Cremona and Soresina observatories, as well as the Gruppo Astrofili Cremonesi.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

Alternate Designations
 1999 ET4 = 2000 QN143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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