+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16029 (1999 DQ6) Classification: Main-belt Asteroid          SPK-ID: 2016029 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1686361844403386 1.2994e-08   a 3.140061638825009 1.3777e-08 au q 2.610533625146083 3.917e-08 au i 15.15341109840472 6.0534e-07 deg node 175.6002615900538 1.7482e-06 deg peri 346.1886397318751 6.573e-06 deg M 49.63013054462035 5.1748e-06 deg tp 2459116.312598480968 (2020-Sep-23.81259848) 2.8253e-05 TDB period 2032.38362341533 5.56 1.3375e-05 3.662e-08 d yr n .1771319134106366 1.1657e-09 deg/d Q 3.669589652503935 1.61e-08 au   Orbit Determination Parameters    # obs. used (total)      2699      data-arc span      25495 days (69.80 yr)      first obs. used      1951-09-08      last obs. used      2021-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43676      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 04:01:42   Additional Information  Earth MOID = 1.62129 au   Jupiter MOID = 1.31806 au   T_jup = 3.135  [ 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 12.22   n/a MPCxxxxx   diameter diameter 20.707 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 5.95 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Hess, K.; Bruner, M.; Ditteon, R. (2017) Minor Planet Bull. 44, 3-5.] [Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.068   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16029 (1999 DQ6)          Discovered 1999-Feb-20 by LINEAR at Socorro Reference: 20000726/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 DQ6 = 1971 HW  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-24 15:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin