+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   16546 (1991 RP5) Classification: Main-belt Asteroid          SPK-ID: 2016546 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250375 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1310525 n/a   a 3.1981670 n/a AU q 2.7790392 n/a AU i 21.86760 n/a deg node 176.84555 n/a deg peri 93.41684 n/a deg M 359.71082 n/a deg tp 2456402.1780925 (2013-Apr-19.67809250) n/a JED period 2089.0562352 5.72 n/a n/a d yr n 0.17232662 n/a deg/d Q 3.6172948 n/a AU   Orbit Determination Parameters    # obs. used (total)      700      first obs. used      1950-??-??      last obs. used      2012-06-21      # oppositions      16      planetary ephem.      DE403      condition code      0      fit RMS      0.57      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.070  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.6 mag n/a PDS3 (MPO 2865)   16546 (1991 RP5)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675) Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 RP5 = 2000 JT2  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 10:45 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin