+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   7170 Livesey (1987 MK) Classification: Main-belt Asteroid          SPK-ID: 2007170 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO233558 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1828422 n/a   a 2.6987450 n/a AU q 2.2053005 n/a AU i 12.50592 n/a deg node 330.73219 n/a deg peri 28.24116 n/a deg M 260.92377 n/a deg tp 2456846.1646510 (2014-Jul-07.66465100) n/a JED period 1619.3518301 4.43 n/a n/a d yr n 0.22231117 n/a deg/d Q 3.1921895 n/a AU   Orbit Determination Parameters    # obs. used (total)      743      first obs. used      1978-??-??      last obs. used      2012-06-24      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.311  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.30 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 diameter diameter 9.21 km 1.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 geometric albedo albedo 0.0998   0.027 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 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) 7170 Livesey           Discovered 1987 June 30 by R. H. McNaught at Siding Spring. Ron Livesey (b. 1929) has had a major influence on amateur astronomy, particularly in his native Scotland. He has been a key figure in organizing astronomical societies and observational programs, particularly of aurorae. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070106/MPCPages.arc Last Updated: 2007-01-09 Alternate Designations  1987 MK = 1978 PU4  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 12:54 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin