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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1175563853044069 1.6794e-08  
a 2.393444901925461 7.2939e-09 au
q 2.112080170829843 3.9721e-08 au
i 7.900555160603309 9.0632e-07 deg
node 156.7217667494503 1.5259e-06 deg
peri 234.0613513945039 9.1986e-06 deg
M 151.1781692111983 8.3145e-06 deg
tp 2458828.536849945964
(2019-Dec-11.03684995)
3.0972e-05 TDB
period 1352.488491468698
3.70
6.1824e-06
1.693e-08
d
yr
n .2661760172236791 1.2167e-09 deg/d
Q 2.674809633021078 8.1513e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2412  
   data-arc span      9607 days (26.30 yr)  
   first obs. used      1995-02-24  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46433  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:18:25  

Additional Information
 Earth MOID = 1.12632 au 
 Jupiter MOID = 2.76887 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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