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21413 Albertsao (1998 FS68)
Classification: Main-belt Asteroid          SPK-ID: 2021413
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143610529042579 2.9863e-08  
a 2.259322167446281 5.4776e-09 au
q 2.000943705527194 6.6948e-08 au
i 3.13530027369859 3.1523e-06 deg
node 249.8448379193357 6.624e-05 deg
peri 36.67132719890678 6.7994e-05 deg
M 227.2067602991496 1.5916e-05 deg
tp 2459854.050608858359
(2022-Oct-01.55060886)
5.5183e-05 TDB
period 1240.411180268497
3.40
4.511e-06
1.235e-08
d
yr
n .2902263424633717 1.0555e-09 deg/d
Q 2.517700629365368 6.104e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1978  
   data-arc span      10000 days (27.38 yr)  
   first obs. used      1994-01-10  
   last obs. used      2021-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:07:44  

Additional Information
 Earth MOID = .985297 au 
 Jupiter MOID = 2.60113 au 
 T_jup = 3.610 
[ 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 14.65   n/a E2021B10  

21413 Albertsao           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Albert Tsao (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his materials science project. He attends the Brookline High School, Brookline, Massachusetts.
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 FS68 = 1994 BK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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