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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 | Close-Approach Data ]

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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1521439727521353 4.8971e-08  
a 2.290280894656876 7.1015e-09 au
q 1.941828460625464 1.1018e-07 au
i 8.086344164184524 4.1681e-06 deg
node 136.7257334219629 3.6553e-05 deg
peri 188.9949068318062 3.9993e-05 deg
M 107.6242427892284 1.7384e-05 deg
tp 2458622.023289525825
(2019-May-18.52328953)
6.0726e-05 TDB
period 1265.993722599641
3.47
5.8882e-06
1.612e-08
d
yr
n .2843615995668303 1.3226e-09 deg/d
Q 2.638733328688288 8.182e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1125  
   data-arc span      10669 days (29.21 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55195  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:36:50  

Additional Information
 Earth MOID = .930156 au 
 Jupiter MOID = 2.67925 au 
 T_jup = 3.570 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO449142  

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

[ show close-approach data ]
Alternate Designations
 1998 QF38 = 1991 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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