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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144318873695841 2.9863e-08  
a 2.259236828694401 5.4588e-09 au
q 2.000708094372027 6.6944e-08 au
i 3.135628901442364 3.1558e-06 deg
node 249.8525667408463 6.6259e-05 deg
peri 36.62288367698785 6.8015e-05 deg
M 170.3738282436563 1.5881e-05 deg
tp 2458613.495478323130
(2019-May-09.99547832)
5.4368e-05 TDB
period 1240.340902016102
3.40
4.4954e-06
1.231e-08
d
yr
n .2902427868135614 1.0519e-09 deg/d
Q 2.517765563016775 6.0835e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      9913 days (27.14 yr)  
   first obs. used      1994-01-10  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:45:10  

Additional Information
 Earth MOID = .983434 au 
 Jupiter MOID = 2.60217 au 
 T_jup = 3.610 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143723654458952 2.9812e-08  
q 2.000892218028242 6.6774e-08 au
tp 2457373.951249805505
(2015-Dec-17.45124981)
5.404e-05 TDB
node 249.8845964166546 6.6278e-05 deg
peri 36.6890153954179 6.8042e-05 deg
i 3.134788819971754 3.1556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1966  
   data-arc span      9913 days (27.14 yr)  
   first obs. used      1994-01-10  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:45:10  

Additional Information
 Jupiter MOID = 2.60217 au 
 T_jup = 3.610 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.88732858257423E-16 -1.985474969408947E-15 3.030871566360518E-13 3.706756538087796E-15 8.135059898152001E-14 -4.990703463772593E-16
q -1.985474969408947E-15 4.458728092451938E-15 -6.707797297964315E-13 -7.916908695003374E-15 -1.831892858234255E-13 1.149507207320917E-15
tp 3.030871566360518E-13 -6.707797297964315E-13 2.920374979854216E-9 1.229787246315877E-11 8.437001781432215E-10 -3.481053528708212E-13
node 3.706756538087796E-15 -7.916908695003374E-15 1.229787246315877E-11 4.392836034476539E-9 -4.382555475093437E-9 -4.020106591076659E-12
peri 8.135059898152001E-14 -1.831892858234255E-13 8.437001781432215E-10 -4.382555475093437E-9 4.629661583407358E-9 3.910251344534304E-12
i -4.990703463772593E-16 1.149507207320917E-15 -3.481053528708212E-13 -4.020106591076659E-12 3.910251344534304E-12 9.95797956141212E-12

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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