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25042 Qiujun (1998 QN42)
Classification: Main-belt Asteroid          SPK-ID: 2025042
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1853212933453087 6.6614e-08  
a 2.724294072377999 1.3427e-08 au
q 2.21942437143195 1.8401e-07 au
i 8.524079221168011 6.7636e-06 deg
node 325.95466399 3.0586e-05 deg
peri 10.2937468513114 3.2651e-05 deg
M 215.8890847947117 1.1692e-05 deg
tp 2459257.966729322735
(2021-Feb-12.46672932)
5.5226e-05 TDB
period 1642.401772405782
4.50
1.2142e-05
3.324e-08
d
yr
n .2191911906382528 1.6204e-09 deg/d
Q 3.229163773324048 1.5915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      8471 days (23.19 yr)  
   first obs. used      1996-02-16  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48058  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:42:13  

Additional Information
 Earth MOID = 1.20931 au 
 Jupiter MOID = 2.14832 au 
 T_jup = 3.316 
[ 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 13.8   n/a MPO395246  

25042 Qiujun           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Qiu Jun (b. 1989) was awarded second place in the 2008 Intel International Science and Engineering Fair for his electrical and mechanical engineering project. He attends the Shenzhen Senior High School, Shenzhen, Guangdong, China.
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 QN42 = 1996 DW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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