+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   13651 (1997 BR) Classification: Apollo [NEO, PHA]          SPK-ID: 2013651 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3058376712644127 5.6454e-08   a 1.33547714851404 6.0437e-09 AU q .9270379273856677 7.5201e-08 AU i 17.24642892340943 1.2106e-05 deg node 116.6993094872306 2.0111e-05 deg peri 133.7758465787685 2.2007e-05 deg M 100.4421404736716 2.8695e-05 deg tp 2456243.222507315676 (2012-Nov-11.72250732) 4.3928e-05 JED period 563.7065986382283 1.54 3.8266e-06 1.048e-08 d yr n .638630097411789 4.3352e-09 deg/d Q 1.743916369642412 7.892e-09 AU   Orbit Determination Parameters    # obs. used (total)      510      # delay obs. used      0      # Doppler obs. used      1      data-arc span      11617 days (31.81 yr)      first obs. used      1980-02-09      last obs. used      2011-11-30      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .50521      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:37:55   Additional Information  Earth MOID = .0141395 AU   T_jup = 4.818  [ 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 17.6 mag n/a PDS3 (MPC 38357)   rotation period rot_per 33.644 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.] [Pravec, P.; et al. (2005) Icarus 173, 108-131.] SMASSII spectral type spec_B S   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) 13651 (1997 BR)          Discovered 1997-Jan-20 by Beijing Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20000222/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-22 15:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin