+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70053 (1999 HO1) Classification: Main-belt Asteroid          SPK-ID: 2070053 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2589974249379094 3.1256e-08   a 2.257744451336082 9.1961e-09 au q 1.672994452272183 6.8554e-08 au i 22.08048792731453 6.0275e-06 deg node 23.83723973140802 8.8818e-06 deg peri 260.8729076977605 1.5605e-05 deg M 88.51456459370009 1.2881e-05 deg tp 2458895.834807987999 (2020-Feb-16.33480799) 4.3997e-05 TDB period 1239.112112540706 3.39 7.5706e-06 2.073e-08 d yr n .2905306116827855 1.7751e-09 deg/d Q 2.84249445039998 1.1578e-08 au   Orbit Determination Parameters    # obs. used (total)      928      data-arc span      7945 days (21.75 yr)      first obs. used      1999-04-07      last obs. used      2021-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46325      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:39:45   Additional Information  Earth MOID = .804499 au   Jupiter MOID = 2.58567 au   T_jup = 3.484  [ hide covariance matrix ] Orbital Elements at Epoch 2457610.5 (2016-Aug-10.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2584947077191759 3.1242e-08   q 1.674382864278477 6.8503e-08 au tp 2457656.513297496552 (2016-Sep-25.01329750) 4.3602e-05 TDB node 23.86000855165339 8.8785e-06 deg peri 260.8812255797013 1.5631e-05 deg i 22.08235142735096 6.0279e-06 deg   Orbit Determination Parameters    # obs. used (total)      928      data-arc span      7945 days (21.75 yr)      first obs. used      1999-04-07      last obs. used      2021-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46325      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:39:45   Additional Information  Jupiter MOID = 2.58567 au   T_jup = 3.484  Orbit Covariance (6×6)   e q tp node peri i e 9.760554108398404E-16 -2.130722294323297E-15 -3.106434082707822E-13 3.798741598776873E-15 -1.109223169828715E-13 4.911667516193102E-15 q -2.130722294323297E-15 4.692695801085678E-15 6.97052654505713E-13 -8.84565247953188E-15 2.487002391669261E-13 -1.09643746831932E-14 tp -3.106434082707822E-13 6.97052654505713E-13 1.901161348586583E-9 -1.659188119641509E-11 5.66498301568846E-10 2.019625437880781E-12 node 3.798741598776873E-15 -8.84565247953188E-15 -1.659188119641509E-11 7.882854269522524E-11 -7.723294652716778E-11 -6.904570103594734E-13 peri -1.109223169828715E-13 2.487002391669261E-13 5.66498301568846E-10 -7.723294652716778E-11 2.443323766253217E-10 1.025531343794056E-12 i 4.911667516193102E-15 -1.09643746831932E-14 2.019625437880781E-12 -6.904570103594734E-13 1.025531343794056E-12 3.633557641139956E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.73   n/a E2021B10   70053 (1999 HO1)          Discovered 1999-Apr-17 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 HO1 = 2002 DB11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-01 23:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin