+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2019 HH3) Classification: Aten [NEO]          SPK-ID: 3841619 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5132547830487054 0.00057567   a .721588086812753 0.00017422 au q .351229549865143 0.00050014 au i 13.56030872609934 0.028514 deg node 32.03445028495294 0.0013975 deg peri 15.90221644224715 0.0051332 deg M 28.64992480869324 0.31197 deg tp 2459182.682226067877 (2020-Nov-29.18222607) 0.18757 TDB period 223.8888464244046 0.61 0.081084 0.000222 d yr n 1.607940751624503 0.00058234 deg/d Q 1.091946623760363 0.00026364 au   Orbit Determination Parameters    # obs. used (total)      42      data-arc span      2 days      first obs. used      2019-04-25      last obs. used      2019-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .42467      source      ORB      producer      Otto Matic      solution date      2019-Jul-27 14:01:58   Additional Information  Earth MOID = .0261786 au   Jupiter MOID = 4.30325 au   T_jup = 7.832  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 25.5   .32505 MPO477915 autocmod 2.6q [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-04 20:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin