+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7660 (1993 VM1) Classification: Mars-crossing Asteroid          SPK-ID: 2007660 [ 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 .1398728637836707 6.5598e-08   a 1.910052964134427 1.2137e-08 AU q 1.642888386062455 1.2612e-07 AU i 23.14783404461297 1.0766e-05 deg node 170.534865187889 1.6383e-05 deg peri 265.0063467891576 4.3699e-05 deg M 114.8964644407635 4.4938e-05 deg tp 2456092.769384088770 (2012-Jun-14.26938409) 0.00011903 JED period 964.1987006933397 2.64 9.1904e-06 2.516e-08 d yr n .3733670245989025 3.5588e-09 deg/d Q 2.177217542206398 1.3835e-08 AU   Orbit Determination Parameters    # obs. used (total)      666      data-arc span      8279 days (22.67 yr)      first obs. used      1990-08-16      last obs. used      2013-04-16      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52948      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:27:27   Additional Information  Earth MOID = .779743 AU   T_jup = 3.827  [ 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 14.2 mag n/a PDS3 (MPC 29902)   rotation period rot_per 5.916 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Incomplete or inconclusive result. Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2005) http://www.asu.cas.cz/~ppravec/neo.htm] [Warner, B.D (2012) Minor Planet Bul. 39, 16-21.] 7660 (1993 VM1)          Discovered 1993-Nov-05 by McNaught, R. H. at Siding Spring (413) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1993 VM1 = 1990 QC  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 23:05 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin