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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172928311777293 3.6616e-08  
a 2.393582429774966 8.5731e-09 au
q 2.112832369929392 8.9713e-08 au
i 7.899518081854276 3.9165e-06 deg
node 156.7247656583087 2.4759e-05 deg
peri 234.0751436359829 2.9293e-05 deg
M 45.78940952075676 1.4237e-05 deg
tp 2458828.458368831260
5.3601e-05 TDB
period 1352.605064554738
n .2661530770761293 1.4299e-09 deg/d
Q 2.67433248962054 9.5786e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1898  
   data-arc span      9110 days (24.94 yr)  
   first obs. used      1995-02-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:54:28  

Additional Information
 Earth MOID = 1.1278 au 
 Jupiter MOID = 2.76823 au 
 T_jup = 3.508 
[ 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 13.9   n/a MPO452412  
diameter diameter 4.582 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.279   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1953-Feb-12 22:10 00:02 Juno 0.0352549810771542 0.035245052299928 0.035264909987511 3.36305331818818 3.36305321557769 2434421.423811459 1.89106626975611 505.897834450178 30.7647391967422 -12.2987374091362 37854.919991401 T 35 CATAB v2.0f-lin.ifort 2020-Feb-22 21:54:44 2020-Feb-22 21:54

Alternate Designations
 1999 FL9 = 1995 DA12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Jun-04 04:57 UT
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