+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   2049 Grietje (1973 SH) Classification: Inner Main-belt Asteroid          SPK-ID: 2002049 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08441819651464536 9.9945e-08   a 1.949031502333392 9.1703e-09 AU q 1.784497777956177 1.9577e-07 AU i 24.41766329655616 1.4041e-05 deg node 200.1143073189411 1.5019e-05 deg peri 141.6891278650237 5.929e-05 deg M 222.7312685138934 5.9052e-05 deg tp 2456779.462149001941 (2014-May-01.96214900) 0.00016391 JED period 993.863439719386 2.72 7.0143e-06 1.92e-08 d yr n .3622228020598532 2.5564e-09 deg/d Q 2.113565226710606 9.9444e-09 AU   Orbit Determination Parameters    # obs. used (total)      507      data-arc span      14447 days (39.55 yr)      first obs. used      1973-09-29      last obs. used      2013-04-19      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54634      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:49:20   Additional Information  Earth MOID = .806466 AU   T_jup = 3.780  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9 mag n/a PDS3 (MPC 17264)   rotation period rot_per 12. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Science XXVI, 1511-1512.] 2049 Grietje           Discovered 1973 Sept. 29 by T. Gehrels at Palomar. Named in honor of Mrs. G. A. M. Haring-Gehrels, an exceptional person. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC 5282 Last Updated: 2007-10-23 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 13:58 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin