+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   312617 (2009 SZ199) Classification: Jupiter Trojan          SPK-ID: 2312617 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06613360944365702 7.625e-08   a 5.152628140373486 3.1233e-07 au q 4.81186624332963 4.6721e-07 au i 10.29023495608355 8.8796e-06 deg node 2.389473793116112 4.1028e-05 deg peri 107.33383287 0.00010437 deg M 247.3874859454123 0.00010832 deg tp 2460336.867120193692 (2024-Jan-27.36712019) 0.0013858 TDB period 4272.102148758748 11.70 0.00038844 1.063e-06 d yr n .08426764797854785 7.6619e-09 deg/d Q 5.493390037417344 3.3299e-07 au   Orbit Determination Parameters    # obs. used (total)      150      data-arc span      6385 days (17.48 yr)      first obs. used      2002-04-02      last obs. used      2019-09-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45381      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 08:11:52   Additional Information  Earth MOID = 3.84626 au   Jupiter MOID = .296479 au   T_jup = 2.964  [ 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 13.3   n/a MPO494657   312617 (2009 SZ199)          Discovered 2008-Jul-30 by Spacewatch at Kitt Peak Reference: 20120109/Numbers.arc Last Updated: 2012-01-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-11 07:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin