+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173856 (2001 TZ170) Classification: Main-belt Asteroid          SPK-ID: 2173856 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01913383519819152 3.927e-08   a 2.883701873711419 2.4202e-08 au q 2.828525597299108 1.2486e-07 au i 7.609612529557717 6.6728e-06 deg node 308.0989365620121 2.6288e-05 deg peri 89.3995422660485 0.00018461 deg M 271.3186324589761 0.00018358 deg tp 2459441.109490316605 (2021-Aug-14.60949032) 0.00091331 TDB period 1788.644231727715 4.90 2.2517e-05 6.165e-08 d yr n .2012697626583142 2.5338e-09 deg/d Q 2.938878150123729 2.4665e-08 au   Orbit Determination Parameters    # obs. used (total)      399      data-arc span      6960 days (19.06 yr)      first obs. used      2001-09-29      last obs. used      2020-10-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5002      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:16:46   Additional Information  Earth MOID = 1.84485 au   Jupiter MOID = 2.16435 au   T_jup = 3.280  [ 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 15.6   n/a MPO436863   173856 (2001 TZ170)          Discovered 2001-Oct-15 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-Nov-30 15:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin