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25039 Chensun (1998 QF38)
Classification: Main-belt Asteroid          SPK-ID: 2025039
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522540709301209 4.8842e-08  
a 2.290224630459999 6.9037e-09 au
q 1.941528607128032 1.0975e-07 au
i 8.08691592855047 4.0508e-06 deg
node 136.7245310130288 3.0563e-05 deg
peri 189.0817495556758 3.365e-05 deg
M 220.1153565422255 1.6195e-05 deg
tp 2459888.407096412943
(2022-Nov-04.90709641)
5.7893e-05 TDB
period 1265.947071324628
3.47
5.7241e-06
1.567e-08
d
yr
n .2843720785445736 1.2858e-09 deg/d
Q 2.638920653791965 7.9548e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1327  
   data-arc span      10875 days (29.77 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-05-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53119  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 19:05:50  

Additional Information
 Earth MOID = .929171 au 
 Jupiter MOID = 2.6785 au 
 T_jup = 3.570 
[ 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 15.16   n/a MPCxxxxx  

25039 Chensun           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Chen Sun (b. 1992) was awarded second place in the 2008 Intel International Science and Engineering Fair for his microbiology project. He attends the A B Lucas Secondary School, London, Ontario, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080917/MPCPages.arcLast Updated: 2008-09-19

Alternate Designations
 1998 QF38 = 1991 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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