+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5587 (1990 SB) Classification: Amor [NEO]          SPK-ID: 2005587 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 156 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5467046981901766 1.8393e-08   a 2.394266725713849 5.6264e-09 AU q 1.085309858045677 4.4632e-08 AU i 18.09449479377565 5.4916e-06 deg node 190.3738116996205 1.0806e-05 deg peri 86.29327886812806 1.3899e-05 deg M 68.93217802485219 5.2738e-06 deg tp 2456141.394446177834 (2012-Aug-01.89444618) 1.8993e-05 JED period 1353.185145874108 3.70 4.7699e-06 1.306e-08 d yr n .2660389829859188 9.3777e-10 deg/d Q 3.703223593382022 8.7024e-09 AU   Orbit Determination Parameters    # obs. used (total)      2448      data-arc span      21581 days (59.09 yr)      first obs. used      1953-12-07      last obs. used      2013-01-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .4387      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:43:41   Additional Information  Earth MOID = .301185 AU   T_jup = 3.253  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.6 mag n/a PDS3 (MPC 22211)   diameter diameter 3.57 km n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130   rotation period rot_per 5.0522 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.] [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Koff, R.A.; Pravec, P.; Sarounova, L.; Kusnirak, P.; et al. (2002) Minor Planet Bul. 29, 51-53.] [Galad, A.; Kornos, L.; Gajdos, S.; Vilagi, J.; Toth, J. (2004) Contr. Astron. Obs. Skalnate Pleso 34, 157-168] [Kaasalainen, M.; et al. (2003) Icarus 167, 178-196.] [Polishook, D. (2009) Minor Planet Bul. 36, 119-120.] geometric albedo albedo 0.32   n/a Delbo et al. (2003). Icarus, v. 166, pp. 116-130   SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 5587 (1990 SB)          Discovered 1990-Sep-16 by Holt and Brown at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1990 SB = 1990 UV12  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-21 08:02 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin