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JPL Small-Body Database Browser
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19171 (1991 FS)
Classification: Main-belt Asteroid          SPK-ID: 2019171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1750610499906474 4.9148e-08  
a 2.312780193514905 8.1802e-09 au
q 1.907902464440613 1.1344e-07 au
i 4.786271784851114 4.691e-06 deg
node 35.52664049997591 5.5372e-05 deg
peri 109.8815533588101 5.6767e-05 deg
M 134.1629302759204 1.1929e-05 deg
tp 2458521.726614518922
(2019-Feb-07.22661452)
4.2277e-05 TDB
period 1284.694799217001
3.52
6.8158e-06
1.866e-08
d
yr
n .280222197691945 1.4867e-09 deg/d
Q 2.717657922589197 9.6122e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1406  
   data-arc span      10281 days (28.15 yr)  
   first obs. used      1991-03-17  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46962  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:40:54  

Additional Information
 Earth MOID = .926021 au 
 Jupiter MOID = 2.29805 au 
 T_jup = 3.558 
[ 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 14.9   n/a MPO332996  

19171 (1991 FS)          Discovered 1991-Mar-17 by Shiozawa, H., Kizawa, M. at Fujieda
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FS = 1998 EQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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