+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   3630 Lubomir (1984 QN) Classification: Main-belt Asteroid          SPK-ID: 2003630 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO256890 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2032194 n/a   a 2.7720263 n/a AU q 2.2086968 n/a AU i 7.38848 n/a deg node 336.96355 n/a deg peri 322.74678 n/a deg M 105.79498 n/a deg tp 2455905.0988566 (2011-Dec-09.59885660) n/a JED period 1685.7549539 4.62 n/a n/a d yr n 0.21355417 n/a deg/d Q 3.3353558 n/a AU   Orbit Determination Parameters    # obs. used (total)      938      first obs. used      1950-??-??      last obs. used      2013-03-01      # oppositions      20      planetary ephem.      DE403      condition code      0      fit RMS      0.55      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.295  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.5 mag n/a PDS3 (MPC 28110)   diameter diameter 15.8 km n/a DASTCOM value unverified geometric albedo albedo 0.0535   0.015 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 2: from the PDS IMPS singleton file SMASSII spectral type spec_B Ch   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) 3630 Lubomir (1984 QN)          Discovered 1984-Aug-28 by Mrkos, A. at Klet Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1984 QN = 1966 TK = 1970 PC1 = 1970 QS1 = 1980 XT1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-19 16:45 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin