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20278 Qileihang (1998 FP45)
Classification: Main-belt Asteroid          SPK-ID: 2020278
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357254521693341 2.8998e-08  
a 2.428069865812766 1.0163e-08 au
q 2.098518985376594 7.264e-08 au
i 3.318909117927987 3.3705e-06 deg
node 130.438966866834 7.7668e-05 deg
peri 352.1430950858359 7.9934e-05 deg
M 49.60365238615218 1.8698e-05 deg
tp 2459010.084915378477
(2020-Jun-09.58491538)
7.1514e-05 TDB
period 1381.943207127329
3.78
8.6766e-06
2.376e-08
d
yr
n .2605027458026576 1.6356e-09 deg/d
Q 2.757620746248937 1.1543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      11403 days (31.22 yr)  
   first obs. used      1989-12-25  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:25  

Additional Information
 Earth MOID = 1.11419 au 
 Jupiter MOID = 2.30314 au 
 T_jup = 3.494 
[ 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 15.71   n/a E2021B10  

20278 Qileihang           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Qilei Hang (b. 1985) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for her engineering project. She attends the Allegany High School, Cumberland, Maryland.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040415/MPCPages.arcLast Updated: 2004-04-20

Alternate Designations
 1998 FP45 = 1989 YJ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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