+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   37581 (1990 SU15) Classification: Main-belt Asteroid          SPK-ID: 2037581 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250573 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2203372 n/a   a 2.7019663 n/a AU q 2.1066226 n/a AU i 12.51550 n/a deg node 178.94185 n/a deg peri 142.20000 n/a deg M 43.46602 n/a deg tp 2456204.6310017 (2012-Oct-04.13100170) n/a JED period 1622.2520346 4.44 n/a n/a d yr n 0.22191373 n/a deg/d Q 3.2973100 n/a AU   Orbit Determination Parameters    # obs. used (total)      513      first obs. used      1990-??-??      last obs. used      2012-12-02      # oppositions      13      planetary ephem.      DE403      condition code      0      fit RMS      0.59      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.298  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.1 mag n/a PDS3 (MPO 26208)   37581 (1990 SU15)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar (675) Reference: 20020328/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1990 SU15 = 1990 QD1 = 1998 HH48  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 08:25 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin