+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   295368 (2008 HW51) Classification: Main-belt Asteroid          SPK-ID: 2295368 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1900515049159085 2.2273e-07   a 2.984662098343612 4.8716e-08 au q 2.417422574887935 6.9661e-07 au i 8.604966221276422 8.2426e-06 deg node 219.9465920980497 6.1999e-05 deg peri 105.9053527367929 0.00010681 deg M 51.76192961873605 5.6447e-05 deg tp 2458729.699700767750 (2019-Sep-03.19970077) 0.00030032 TDB period 1883.394000990305 5.16 4.6112e-05 1.262e-07 d yr n .191144285163226 4.6798e-09 deg/d Q 3.551901621799288 5.7975e-08 au   Orbit Determination Parameters    # obs. used (total)      103      data-arc span      7264 days (19.89 yr)      first obs. used      1999-10-03      last obs. used      2019-08-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57598      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 05:43:00   Additional Information  Earth MOID = 1.42383 au   Jupiter MOID = 1.91633 au   T_jup = 3.214  [ 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 16.9   n/a MPO446423   295368 (2008 HW51)          Discovered 2008-Apr-29 by Spacewatch at Kitt Peak Reference: 20110912/Numbers.arc Last Updated: 2011-09-14 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1908-Dec-12 18:28 00:08 Jupiter 1.97713756648176 1.97713593028416 1.97713920267543 1.80926478906602 1.55454884148585 2418288.269493803 8.32745048668265 321.060512871023 113.567594723946 71.0020511379891 571822.831114441 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 1954-Apr-04 06:11 00:04 Jupiter 1.94302863179984 1.9430270404279 1.94303022317156 3.09146112563426 2.947078876498 2434836.757846901 3.82750926115521 172.683456348103 74.4954745028348 82.3830489528675 1053891.45290724 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 1990-Nov-18 11:31 00:01 Jupiter 1.89952637283963 1.89952539450347 1.89952735117526 1.79095887761806 1.52174529447093 2448213.979839859 1.24410001376349 205.191302670134 92.4786639337921 -63.8348540553911 1106757.6277405 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 2027-Jul-20 00:07 00:03 Jupiter 1.96374610412893 1.96374329964589 1.96374890860303 1.80183268872435 1.54400166163308 2461606.505192114 2.82871050097368 309.686173022563 117.479354493184 44.8089476354039 461422.679094524 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 2072-Nov-07 15:13 00:07 Jupiter 1.96756696415639 1.96756356106582 1.96757036726765 3.16068905314218 3.02141864050594 2478154.133806889 6.64842148485515 406.817635564511 48.2061930099955 -78.5215452421067 822400.783447252 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 2109-Jun-25 12:57 00:10 Jupiter 1.91046135250883 1.91046040444878 1.9104623005728 1.80442241273074 1.53922703186923 2491532.039515139 10.4368425083325 752.219084429648 81.6747360475307 -58.9463961005448 1293699.0049323 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 2146-Feb-24 05:01 00:14 Jupiter 1.95301818050357 1.95301422670921 1.95302213432781 1.80815831110963 1.54985095491476 2504924.708995195 13.532699039278 832.93676711529 119.916030982848 53.5768163778389 546449.709647831 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 2191-Jun-15 23:47 00:17 Jupiter 1.99263182200077 1.99262608437603 1.99263755972506 3.23069626290788 3.09632746690206 2521472.491032099 16.8791245996693 809.681860363186 49.7844494122004 -81.7949624338658 827269.884180829 T 9 CATAB v2.0f-lin.ifort 2019-Sep-24 05:43:02 2019-Sep-24 05:43 Alternate Designations  2008 HW51 = 1999 TG301 = 2004 TZ146  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 22:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin