+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2002 AS4) Classification: Apollo [NEO, PHA]          SPK-ID: 3102742 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2452283.5 (2002-Jan-09.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .8014395030920578 0.0051013   a 1.267331819546509 0.020655 au q .2516420358364013 0.0023639 au i 27.03895020931382 0.43178 deg node 285.5588819574012 0.03123 deg peri 42.55829811982166 0.062754 deg M 35.24811140615251 1.0655 deg tp 2452232.476847633642 (2001-Nov-18.97684763) 0.29502 TDB period 521.1154333983044 1.43 12.74 0.03488 d yr n .690825826539743 0.016889 deg/d Q 2.283021603256616 0.03721 au   Orbit Determination Parameters    # obs. used (total)      19      data-arc span      5 days      first obs. used      2002-01-08      last obs. used      2002-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      9      norm. resid. RMS      .44565      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:15:35   Additional Information  Earth MOID = .0383302 au   Jupiter MOID = 3.24804 au   T_jup = 4.632  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 21.65   .77861 7 autocmod 2.6i [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 18:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin