+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14921 (1994 QA) Classification: Main-belt Asteroid          SPK-ID: 2014921 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2232569450173109 2.4991e-08   a 2.332278319726472 7.5047e-09 au q 1.811580987134233 6.0817e-08 au i 25.10753253779269 1.0856e-06 deg node 69.33485480732674 6.238e-06 deg peri 121.2593484534074 8.4505e-06 deg M 312.3084642231711 5.0439e-06 deg tp 2459372.848614642897 (2021-Jun-07.34861464) 1.8789e-05 TDB period 1300.975115621835 3.56 6.2793e-06 1.719e-08 d yr n .2767155156752776 1.3356e-09 deg/d Q 2.852975652318711 9.1802e-09 au   Orbit Determination Parameters    # obs. used (total)      1802      data-arc span      16179 days (44.30 yr)      first obs. used      1976-11-17      last obs. used      2021-03-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46292      source      ORB      producer      Otto Matic      solution date      2021-Mar-17 00:21:24   Additional Information  Earth MOID = .892784 au   Jupiter MOID = 2.33882 au   T_jup = 3.413  [ 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 14.03   n/a E2021B10   diameter diameter 3.658 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 12.9134 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Galad, A.; Kornos, L.; Gajdos, S. (2009) Minor Planet Bull. 36, 13-15.] geometric albedo albedo 0.692   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14921 (1994 QA)          Discovered 1994-Aug-16 by Garradd, G. J. at Siding Spring Reference: 20000523/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1994 QA = 1950 GG = 1992 BV3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-11 19:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin