+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7335 (1989 JA) Classification: Apollo [NEO, PHA]          SPK-ID: 2007335 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4841608255221028 8.2701e-08   a 1.77058715542861 1.3999e-08 AU q .9133382165974624 1.4138e-07 AU i 15.21267114850263 1.4999e-05 deg node 61.43153007456952 2.6701e-05 deg peri 232.0582297219304 3.9953e-05 deg M 32.78700268294345 5.4607e-05 deg tp 2456322.125712383117 (2013-Jan-29.62571238) 0.00012961 JED period 860.5465957019579 2.36 1.0206e-05 2.794e-08 d yr n .4183387649175972 4.9614e-09 deg/d Q 2.627836094259758 2.0777e-08 AU   Orbit Determination Parameters    # obs. used (total)      214      # delay obs. used      0      # Doppler obs. used      5      data-arc span      7710 days (21.11 yr)      first obs. used      1989-04-06      last obs. used      2010-05-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .73082      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:37:46   Additional Information  Earth MOID = .0213794 AU   T_jup = 3.924  [ 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 17.0 mag n/a PDS3 (MPC 28570)   diameter diameter 1.8 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15) rotation period rot_per 12. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) upper-limit; Incomplete or inconclusive result. Published Reference List: [Mahapatra, P.R.; Benner, L.A.M.; Ostro, S.J.; Jurgens, R.F.; et al. (2002) Planetary and Space Sci. 50, 257-260.] 7335 (1989 JA)          Discovered 1989-May-01 by Helin, E. F. at Palomar (675) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-24 03:21 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin