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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144318877923027 2.9866e-08  
a 2.25923682968685 5.4699e-09 au
q 2.000708094295887 6.6957e-08 au
i 3.135628932413851 3.1649e-06 deg
node 249.8525654207746 6.6557e-05 deg
peri 36.62288498085746 6.8333e-05 deg
M 170.3738282169084 1.596e-05 deg
tp 2458613.495478028494
(2019-May-09.99547803)
5.4657e-05 TDB
period 1240.340902833397
3.40
4.5045e-06
1.233e-08
d
yr
n .2902427866223123 1.0541e-09 deg/d
Q 2.517765565077813 6.0958e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1931  
   data-arc span      9870 days (27.02 yr)  
   first obs. used      1994-01-10  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49401  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:29  

Additional Information
 Earth MOID = .983434 au 
 Jupiter MOID = 2.60217 au 
 T_jup = 3.610 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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

[ show close-approach data ]
Alternate Designations
 1998 FS68 = 1994 BK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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