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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358245401587944 3.0933e-08  
a 2.427867300166707 1.0656e-08 au
q 2.09810334055499 7.7758e-08 au
i 3.318730569882179 3.5381e-06 deg
node 130.4442724069471 7.9826e-05 deg
peri 352.3027204105521 8.2127e-05 deg
M 253.1684542857519 1.8913e-05 deg
tp 2459010.546261788363
(2020-Jun-10.04626179)
7.3095e-05 TDB
period 1381.770274471681
3.78
9.0971e-06
2.491e-08
d
yr
n .2605353484953538 1.7153e-09 deg/d
Q 2.757631259778424 1.2104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      10939 days (29.95 yr)  
   first obs. used      1989-12-25  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5816  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:42:57  

Additional Information
 Earth MOID = 1.11418 au 
 Jupiter MOID = 2.30475 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 15.7   n/a MPO502320  

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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