+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447746 (2007 HG17) Classification: Main-belt Asteroid          SPK-ID: 2447746 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07086200329032641 8.135e-08   a 3.113785587732199 7.764e-08 au q 2.893136503168949 2.8618e-07 au i 17.60821982284156 8.1068e-06 deg node 58.43747406465172 2.8193e-05 deg peri 173.1223855362684 7.9109e-05 deg M 117.6865509819289 8.0231e-05 deg tp 2458344.421482418840 (2018-Aug-13.92148242) 0.00044107 TDB period 2006.926571970699 5.49 7.5062e-05 2.055e-07 d yr n .1793787600542348 6.709e-09 deg/d Q 3.334434672295449 8.3141e-08 au   Orbit Determination Parameters    # obs. used (total)      118      data-arc span      4917 days (13.46 yr)      first obs. used      2004-11-03      last obs. used      2018-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60551      source      ORB      producer      Otto Matic      solution date      2018-May-07 07:05:07   Additional Information  Earth MOID = 1.88241 au   Jupiter MOID = 1.67019 au   T_jup = 3.142  [ hide covariance matrix ] Orbital Elements at Epoch 2457309.5 (2015-Oct-14.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07026934760166109 8.1084e-08   q 2.896396438301935 2.8542e-07 au tp 2456348.025604645053 (2013-Feb-24.52560464) 0.00043877 TDB node 58.47067132871502 2.8189e-05 deg peri 175.433169416625 8.027e-05 deg i 17.6087920444648 8.1048e-06 deg   Orbit Determination Parameters    # obs. used (total)      118      data-arc span      4917 days (13.46 yr)      first obs. used      2004-11-03      last obs. used      2018-04-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60551      source      ORB      producer      Otto Matic      solution date      2018-May-07 07:05:07   Additional Information  Jupiter MOID = 1.67019 au   T_jup = 3.142  Orbit Covariance (6×6)   e q tp node peri i e 6.574579089588607E-15 -2.247923264451514E-14 -7.330864411609293E-12 1.329055687587603E-14 -1.261904718262714E-12 7.608848237428067E-15 q -2.247923264451514E-14 8.146406927649952E-14 2.47215385486677E-11 -4.670866360500287E-14 4.640423453643992E-12 -9.200888836990441E-15 tp -7.330864411609293E-12 2.47215385486677E-11 1.925196345595235E-7 -2.640625738862047E-10 3.299903762093195E-8 3.874551763326555E-11 node 1.329055687587603E-14 -4.670866360500287E-14 -2.640625738862047E-10 7.945975522839834E-10 -8.016604220448026E-10 7.962976445809918E-12 peri -1.261904718262714E-12 4.640423453643992E-12 3.299903762093195E-8 -8.016604220448026E-10 6.443333397805567E-9 4.665474215896752E-13 i 7.608848237428067E-15 -9.200888836990441E-15 3.874551763326555E-11 7.962976445809918E-12 4.665474215896752E-13 6.568791555687798E-11 [ 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 15.6   n/a MPO440858   447746 (2007 HG17)          Discovered 2007-Apr-16 by CSS at Catalina Reference: Last Updated: 2015-10-28 [ show close-approach data ] Alternate Designations  2007 HG17 = 2004 VY30  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-02 20:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin