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22155 Marchetti (2000 WQ88)
Classification: Main-belt Asteroid          SPK-ID: 2022155
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339756274491654 3.7172e-08  
a 2.296088319412217 6.4276e-09 au
q 1.988468446140266 8.7258e-08 au
i 6.522858014966283 4.2215e-06 deg
node 342.4089524619205 2.1455e-05 deg
peri 22.51419597372512 2.4616e-05 deg
M 5.811403736083028 1.1674e-05 deg
tp 2459179.985550926670
(2020-Nov-26.48555093)
4.1206e-05 TDB
period 1270.81201062385
3.48
5.3362e-06
1.461e-08
d
yr
n .2832834416030375 1.1895e-09 deg/d
Q 2.603708192684169 7.2888e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2090  
   data-arc span      13975 days (38.26 yr)  
   first obs. used      1982-11-09  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47085  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:01:41  

Additional Information
 Earth MOID = .985962 au 
 Jupiter MOID = 2.85083 au 
 T_jup = 3.574 
[ 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 14.66   n/a E2021B10  

22155 Marchetti           Discovered 2000 Nov. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David Marchetti mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the La Colina Junior High School, Santa Barbara, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

Alternate Designations
 2000 WQ88 = 1982 VQ6 = 1991 EL7 = 1998 FP137 = 1999 RJ46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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