+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3630 Lubomir (1984 QN) Classification: Main-belt Asteroid          SPK-ID: 2003630 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2064304675582435 3.9593e-08   a 2.768507843990827 1.3247e-08 au q 2.197003475317136 1.1581e-07 au i 7.42243159970233 4.1521e-06 deg node 336.623477227295 2.6951e-05 deg peri 324.1920695240702 2.8599e-05 deg M 343.1046307508578 9.6133e-06 deg tp 2459279.464565740194 (2021-Mar-05.96456574) 4.5053e-05 TDB period 1682.546456799874 4.61 1.2076e-05 3.306e-08 d yr n .2139614026971376 1.5356e-09 deg/d Q 3.340012212664517 1.5981e-08 au   Orbit Determination Parameters    # obs. used (total)      2391      data-arc span      25721 days (70.42 yr)      first obs. used      1950-03-22      last obs. used      2020-08-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44295      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:58:39   Additional Information  Earth MOID = 1.18483 au   Jupiter MOID = 1.93822 au   T_jup = 3.295  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.81   n/a E2021B10   diameter diameter 13.403 km 3.635 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.031   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   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 [ show close-approach data ] Alternate Designations  1984 QN = 1966 TK = 1970 PC1 = 1970 QS1 = 1980 XT1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 08:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin