+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103233 (1999 YM17) Classification: Main-belt Asteroid          SPK-ID: 2103233 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1582693567927424 5.43e-08   a 2.317846695974679 9.0211e-09 au q 1.951002590258583 1.2742e-07 au i 2.44381514167671 6.1108e-06 deg node 130.3201571469848 0.00010397 deg peri 326.2911569489262 0.00010524 deg M 353.7303404684097 1.6989e-05 deg tp 2459222.947446524709 (2021-Jan-08.44744652) 6.0894e-05 TDB period 1288.918594092385 3.53 7.5248e-06 2.06e-08 d yr n .2793039076711437 1.6306e-09 deg/d Q 2.684690801690775 1.0449e-08 au   Orbit Determination Parameters    # obs. used (total)      361      data-arc span      10211 days (27.96 yr)      first obs. used      1993-01-24      last obs. used      2021-01-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57375      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:33:47   Additional Information  Earth MOID = .96817 au   Jupiter MOID = 2.47271 au   T_jup = 3.562  [ 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 16.8   n/a MPO432558   103233 (1999 YM17)          Discovered 1999-Dec-31 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 22:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin