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JPL Small-Body Database Browser
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18770 Yingqiuqilei (1999 JN25)
Classification: Main-belt Asteroid          SPK-ID: 2018770
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1786498049371245 3.4203e-08  
a 2.205179280733345 5.2725e-09 au
q 1.811224432378944 7.5944e-08 au
i 2.162749070556038 4.0863e-06 deg
node 1.964457215366685 7.8108e-05 deg
peri 298.5246075427373 7.8883e-05 deg
M 97.82648183965789 9.6197e-06 deg
tp 2458675.473915370409
(2019-Jul-10.97391537)
3.2185e-05 TDB
period 1196.091163315436
3.27
4.2897e-06
1.174e-08
d
yr
n .3009804026995057 1.0794e-09 deg/d
Q 2.599134129087746 6.2144e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2000  
   data-arc span      14347 days (39.28 yr)  
   first obs. used      1980-10-13  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50631  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:34:20  

Additional Information
 Earth MOID = .796933 au 
 Jupiter MOID = 2.61514 au 
 T_jup = 3.640 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO502311  

18770 Yingqiuqilei           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yingqiuqi Lei (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for her earth and space sciences team project. She attends the Robert F. Kennedy High School, Flushing, New York, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

Alternate Designations
 1999 JN25 = 1980 TK9 = 1992 DY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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