+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150207 (1998 SV18) Classification: Main-belt Asteroid          SPK-ID: 2150207 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1267344308613032 8.0019e-08   a 2.303833868676862 7.4609e-09 au q 2.011858794531105 1.8373e-07 au i 6.544702390163262 6.6685e-06 deg node 167.2759659415497 3.8563e-05 deg peri 208.2571260223018 4.0891e-05 deg M 124.4756274951865 1.2176e-05 deg tp 2458758.871605878761 (2019-Oct-02.37160588) 4.3258e-05 TDB period 1277.247804111645 3.50 6.2045e-06 1.699e-08 d yr n .2818560336068757 1.3692e-09 deg/d Q 2.595808942822618 8.4064e-09 au   Orbit Determination Parameters    # obs. used (total)      586      data-arc span      8212 days (22.48 yr)      first obs. used      1998-09-18      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55917      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:17:34   Additional Information  Earth MOID = 1.01329 au   Jupiter MOID = 2.87045 au   T_jup = 3.570  [ 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 16.2   n/a MPO396228   150207 (1998 SV18)          Discovered 1998-Sep-18 by Spacewatch at Kitt Peak Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 08:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin