+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173648 (2001 FS171) Classification: Main-belt Asteroid          SPK-ID: 2173648 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1915952804199514 5.8002e-08   a 2.461168135843367 1.4414e-08 au q 1.989619936695808 1.4676e-07 au i 13.18477496855434 7.0192e-06 deg node 132.6523312069446 1.7701e-05 deg peri 29.56349433856138 2.6656e-05 deg M 8.873217562951298 1.5861e-05 deg tp 2458965.739262516484 (2020-Apr-26.23926252) 6.2225e-05 TDB period 1410.296254463012 3.86 1.239e-05 3.392e-08 d yr n .2552655152140885 2.2425e-09 deg/d Q 2.932716334990927 1.7176e-08 au   Orbit Determination Parameters    # obs. used (total)      371      data-arc span      7939 days (21.74 yr)      first obs. used      1998-07-26      last obs. used      2020-04-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51696      source      ORB      producer      Otto Matic      solution date      2020-May-21 03:28:59   Additional Information  Earth MOID = 1.00954 au   Jupiter MOID = 2.08492 au   T_jup = 3.429  [ 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 16.3   n/a MPO502965   173648 (2001 FS171)          Discovered 2001-Mar-24 by NEAT at Haleakala Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-11 17:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin