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21434 Stanchiang (1998 FG116)
Classification: Main-belt Asteroid          SPK-ID: 2021434
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 .07631706440317589 2.7098e-08  
a 2.233983100976934 6.0027e-09 au
q 2.063492068784071 6.0423e-08 au
i 6.567648021036033 3.3124e-06 deg
node 222.8278143417583 2.8676e-05 deg
peri 213.6198773819509 3.7247e-05 deg
M 93.95840528568209 2.3965e-05 deg
tp 2459078.189189423607
(2020-Aug-16.68918942)
8.1047e-05 TDB
period 1219.602349136121
3.34
4.9156e-06
1.346e-08
d
yr
n .2951781785718913 1.1897e-09 deg/d
Q 2.404474133169797 6.4608e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1792  
   data-arc span      8891 days (24.34 yr)  
   first obs. used      1997-02-01  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47331  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:06  

Additional Information
 Earth MOID = 1.08121 au 
 Jupiter MOID = 2.77593 au 
 T_jup = 3.627 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457367.5 (2015-Dec-11.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07602142042588292 2.7077e-08  
q 2.064028610722637 6.0342e-08 au
tp 2457856.233717380948
(2017-Apr-12.73371738)
8.1112e-05 TDB
node 222.8622695117224 2.8662e-05 deg
peri 212.978856926638 3.7321e-05 deg
i 6.568734712880506 3.3139e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1792  
   data-arc span      8891 days (24.34 yr)  
   first obs. used      1997-02-01  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47331  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:33:06  

Additional Information
 Jupiter MOID = 2.77593 au 
 T_jup = 3.627 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.331872531354148E-16 -1.627055666174963E-15 -1.241270818734871E-13 6.282450930401698E-17 -3.638718980301856E-14 -5.75155877561476E-16
q -1.627055666174963E-15 3.641120096426144E-15 3.008809596710295E-13 6.734120402851734E-16 8.355723711203642E-14 1.304969487401188E-15
tp -1.241270818734871E-13 3.008809596710295E-13 6.579236724693075E-9 9.742553841655468E-12 1.947385801060901E-9 -3.260811973700519E-13
node 6.282450930401698E-17 6.734120402851734E-16 9.742553841655468E-12 8.215082195983673E-10 -8.129470915520537E-10 -1.426550146750026E-11
peri -3.638718980301856E-14 8.355723711203642E-14 1.947385801060901E-9 -8.129470915520537E-10 1.392847976009802E-9 1.408064529534386E-11
i -5.75155877561476E-16 1.304969487401188E-15 -3.260811973700519E-13 -1.426550146750026E-11 1.408064529534386E-11 1.098208251212841E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.87   n/a MPCxxxxx  

21434 Stanchiang           Discovered 1998 Mar. 31 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Stanley Shang Chiang (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 John L. Miller-Great Neck North High School, Great Neck, 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 FG116 = 1999 RM117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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