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JPL Small-Body Database Browser
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159826 Knapp (2003 SF331)
Classification: Main-belt Asteroid          SPK-ID: 2159826
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255444173624579 4.8027e-08  
a 3.069801794986252 2.4491e-08 au
q 2.684405317216476 1.4424e-07 au
i 7.691798892488423 4.1746e-06 deg
node 106.2631947639136 4.1916e-05 deg
peri 230.8489493815509 4.6127e-05 deg
M 70.58347184291607 1.8913e-05 deg
tp 2458615.319363780856
(2019-May-11.81936378)
0.00010291 TDB
period 1964.55381718105
5.38
2.351e-05
6.437e-08
d
yr
n .1832477160216288 2.1929e-09 deg/d
Q 3.455198272756028 2.7565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      6860 days (18.78 yr)  
   first obs. used      2001-04-16  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:09:00  

Additional Information
 Earth MOID = 1.68271 au 
 Jupiter MOID = 1.91388 au 
 T_jup = 3.205 
[ 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 15.6   n/a MPO459731  

159826 Knapp           Discovered 2003 Sept. 26 by the Sloan Digital Sky Survey at Apache Point.
Gillian (Jill) Knapp (b. 1944) is an Anglo-American astronomer and a Founding Mother of the Sloan Digital Sky Survey, best known for her work on stellar mass loss and brown dwarfs.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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