+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   201730 (2003 US224) Classification: Main-belt Asteroid          SPK-ID: 2201730 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1843625194420087 5.9267e-08   a 2.757240958539557 2.6867e-08 au q 2.248909068714505 1.725e-07 au i 3.339810570100052 5.1452e-06 deg node 334.1514818252131 0.00010254 deg peri 42.4842132681416 0.00010366 deg M 237.7147619259433 2.0281e-05 deg tp 2459568.544084334924 (2021-Dec-20.04408433) 0.00010097 TDB period 1672.285826002388 4.58 2.4443e-05 6.692e-08 d yr n .2152742039682193 3.1465e-09 deg/d Q 3.265572848364608 3.1821e-08 au   Orbit Determination Parameters    # obs. used (total)      339      data-arc span      7476 days (20.47 yr)      first obs. used      2000-01-03      last obs. used      2020-06-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52525      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 05:03:59   Additional Information  Earth MOID = 1.25165 au   Jupiter MOID = 2.21237 au   T_jup = 3.316  [ 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 15.9   n/a MPO254313   201730 (2003 US224)          Discovered 2003-Oct-22 by Spacewatch at Kitt Peak Reference: 20081212/Numbers.arc Last Updated: 2008-12-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 19:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin