+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16250 Delbo (2000 HP26) Classification: Main-belt Asteroid          SPK-ID: 2016250 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1485590384412909 3.3058e-08   a 2.310997797122251 7.1056e-09 au q 1.967678186541828 7.4878e-08 au i 6.747900908468602 3.2286e-06 deg node 149.6539423551522 2.7167e-05 deg peri 231.3315360646673 2.9224e-05 deg M 119.9956607303047 1.1014e-05 deg tp 2458572.778811635637 (2019-Mar-30.27881164) 3.8844e-05 TDB period 1283.209966710765 3.51 5.9182e-06 1.62e-08 d yr n .2805464494035868 1.2939e-09 deg/d Q 2.654317407702674 8.1612e-09 au   Orbit Determination Parameters    # obs. used (total)      1584      data-arc span      9883 days (27.06 yr)      first obs. used      1993-05-18      last obs. used      2020-06-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49956      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:28:23   Additional Information  Earth MOID = .977493 au   Jupiter MOID = 2.81779 au   T_jup = 3.561  [ 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 14.9   n/a MPO449069   16250 Delbó           Discovered 2000 Apr. 26 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Marco Delbó (b. 1972) has contributed significantly to knowledge of the physical properties of near-earth asteroids by means of thermal-infrared observations and modeling. He has derived an estimate of the thermal inertia of near-earth asteroids, which is vital for reliable calculations of orbital drift due to the Yarkovsky effect. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050721/MPCPages.arc Last Updated: 2005-07-21 [ show close-approach data ] Alternate Designations  2000 HP26 = 1996 GM11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 22:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin