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21421 Nealwadhwa (1998 FJ78)
Classification: Main-belt Asteroid          SPK-ID: 2021421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1589090557164733 3.8942e-08  
a 2.206178151478519 5.7919e-09 au
q 1.855596464684752 8.6558e-08 au
i 4.181265385438439 3.9522e-06 deg
node 92.67137682251641 5.0363e-05 deg
peri 303.4291579797822 5.2226e-05 deg
M 128.5836573730349 1.1462e-05 deg
tp 2458772.993650397200
(2019-Oct-16.49365040)
3.8418e-05 TDB
period 1196.903937881631
3.28
4.7133e-06
1.29e-08
d
yr
n .3007760176954172 1.1844e-09 deg/d
Q 2.556759838272284 6.7122e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1647  
   data-arc span      12625 days (34.57 yr)  
   first obs. used      1986-08-29  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:11:58  

Additional Information
 Earth MOID = .865635 au 
 Jupiter MOID = 2.85542 au 
 T_jup = 3.641 
[ 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 14.86   n/a E2021B10  

21421 Nealwadhwa           Discovered 1998 Mar. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Neal Wadhwa (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his mathematics project. He attends the Ward Melville High School, East Setauket, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

Alternate Designations
 1998 FJ78 = 1986 QT3 = 1988 EC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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