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JPL Small-Body Database Browser
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21638 Nicjachowski (1999 NA39)
Classification: Main-belt Asteroid          SPK-ID: 2021638
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1951767807500429 3.2115e-08  
a 2.308944757642597 8.4082e-09 au
q 1.858292352916227 7.3164e-08 au
i 1.7951201983616 3.5263e-06 deg
node 358.6066296547549 0.00012497 deg
peri 336.0193162377631 0.00012531 deg
M 321.9132570494032 1.1427e-05 deg
tp 2459136.078265814181
(2020-Oct-13.57826581)
4.1065e-05 TDB
period 1281.500383385773
3.51
7e-06
1.916e-08
d
yr
n .2809207118993334 1.5345e-09 deg/d
Q 2.759597162368967 1.0049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1188  
   data-arc span      9750 days (26.69 yr)  
   first obs. used      1992-07-31  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51808  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:58:43  

Additional Information
 Earth MOID = .848567 au 
 Jupiter MOID = 2.60945 au 
 T_jup = 3.560 
[ 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 15.5   n/a MPO467962  

21638 Nicjachowski           Discovered 1999 July 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Nicholas Robert Apau Jachowski (b. 1986) was awarded first place and Best in Category in the 2005 Intel International Science and Engineering Fair for his earth science project. He attends the West Potomac High School, Alexandria, Virginia, 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 NA39 = 1992 OD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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