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21643 Kornev (1999 NJ42)
Classification: Main-belt Asteroid          SPK-ID: 2021643
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384798755919963 3.6202e-08  
a 2.251551026709846 7.2271e-09 au
q 1.939756520642035 7.9693e-08 au
i 3.902314433100192 3.4907e-06 deg
node 110.5378061501332 5.7208e-05 deg
peri 282.4107596440055 5.8796e-05 deg
M 106.3131025553682 1.3825e-05 deg
tp 2459032.077310285763
(2020-Jul-01.57731029)
4.6932e-05 TDB
period 1234.016928711115
3.38
5.9415e-06
1.627e-08
d
yr
n .2917301956108548 1.4046e-09 deg/d
Q 2.563345532777657 8.2279e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1233  
   data-arc span      13622 days (37.30 yr)  
   first obs. used      1984-01-25  
   last obs. used      2021-05-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51384  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:35:50  

Additional Information
 Earth MOID = .949684 au 
 Jupiter MOID = 2.85325 au 
 T_jup = 3.611 
[ 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 15.60   n/a E2021B10  
rotation period rot_per 3.654 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

21643 Kornev           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Aleksey Borisovich Kornev (b. 1988) was awarded second place in the 2005 Intel International Science and Engineering Fair for his chemistry project. He attends the Bryansky Lyceum #1, Bryansk, Russia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

Alternate Designations
 1999 NJ42 = 1984 BB5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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