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21606 (1999 FH6)
Classification: Main-belt Asteroid          SPK-ID: 2021606
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06635368738149588 3.8754e-08  
a 2.179468845998551 5.2948e-09 au
q 2.034853051533454 8.4592e-08 au
i .9049476386707915 3.6008e-06 deg
node 306.6717411140239 0.00021078 deg
peri 29.20017671573811 0.00021183 deg
M 136.5713265718226 2.0529e-05 deg
tp 2458754.657513454237
(2019-Sep-28.15751345)
6.7017e-05 TDB
period 1175.234210469986
3.22
4.2827e-06
1.173e-08
d
yr
n .3063219201694554 1.1163e-09 deg/d
Q 2.324084640463648 5.6462e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1728  
   data-arc span      10582 days (28.97 yr)  
   first obs. used      1992-02-01  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54268  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:53:36  

Additional Information
 Earth MOID = 1.02293 au 
 Jupiter MOID = 2.86924 au 
 T_jup = 3.679 
[ 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 15.3   n/a MPO502327  

21606 (1999 FH6)          Discovered 1999-Mar-17 by ODAS at Caussols
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 FH6 = 1997 WW31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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