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21642 Kominers (1999 NH41)
Classification: Main-belt Asteroid          SPK-ID: 2021642
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1806451264550681 3.1709e-08  
a 2.238307473323305 6.968e-09 au
q 1.833968136759493 7.0401e-08 au
i 3.227550735287567 4.2142e-06 deg
node 12.29730767550862 6.459e-05 deg
peri 260.5140982098193 6.5657e-05 deg
M 226.3883423488919 1.2087e-05 deg
tp 2459850.462412493388
(2022-Sep-27.96241249)
4.1401e-05 TDB
period 1223.145280663796
3.35
5.7116e-06
1.564e-08
d
yr
n .2943231729632554 1.3744e-09 deg/d
Q 2.642646809887118 8.2268e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1166  
   data-arc span      9530 days (26.09 yr)  
   first obs. used      1995-02-06  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49183  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:03  

Additional Information
 Earth MOID = .821083 au 
 Jupiter MOID = 2.46813 au 
 T_jup = 3.613 
[ 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 15.46   n/a E2021B10  

21642 Kominers           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Scott Duke Kominers (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for his mathematics project. He attends the Walt Whitman High School, Bethesda, Maryland, 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: 20050822/MPCPages.arcLast Updated: 2005-08-26

Alternate Designations
 1999 NH41 = 1995 DE7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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