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17031 Piethut (1999 FL9)
Classification: Main-belt Asteroid          SPK-ID: 2017031
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117409417493994 1.7176e-08  
a 2.393734062826904 7.4145e-09 au
q 2.112687140874865 4.092e-08 au
i 7.899982512962094 9.0763e-07 deg
node 156.7213123095729 1.5282e-06 deg
peri 234.0884805924811 9.3116e-06 deg
M 98.99483821751826 8.306e-06 deg
tp 2458828.517656552670
(2019-Dec-11.01765655)
3.1078e-05 TDB
period 1352.73359755177
3.70
6.2851e-06
1.721e-08
d
yr
n .266127787948449 1.2365e-09 deg/d
Q 2.674780984778943 8.285e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2297  
   data-arc span      9525 days (26.08 yr)  
   first obs. used      1995-02-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:27:45  

Additional Information
 Earth MOID = 1.1264 au 
 Jupiter MOID = 2.76808 au 
 T_jup = 3.508 
[ 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 14.00   n/a MPCxxxxx  
diameter diameter 4.582 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17031 Piethut           Discovered 1999 Mar. 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Piet Hut (b. 1952) is a professor of astrophysics at the Institute for Advanced Study, Princeton, N.J. He has researched the dynamics of star clusters and comet clouds. Hut is a cofounder of the B612 Foundation, whose goal is to produce a significant alteration in the orbit of a minor planet in a controlled manner.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

Alternate Designations
 1999 FL9 = 1995 DA12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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