+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277771 (2006 DH177) Classification: Main-belt Asteroid          SPK-ID: 2277771 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05680202185959458 5.5066e-08   a 2.748970620713686 2.4091e-08 au q 2.592823531424524 1.5743e-07 au i 3.796393907771966 6.5544e-06 deg node 5.357928951107239 6.2825e-05 deg peri 23.07399383924189 7.7252e-05 deg M 179.7501854230248 4.5846e-05 deg tp 2458169.271508667934 (2018-Feb-19.77150867) 0.00020949 TDB period 1664.767444747308 4.56 2.1884e-05 5.992e-08 d yr n .2162464199644676 2.8427e-09 deg/d Q 2.905117710002848 2.546e-08 au   Orbit Determination Parameters    # obs. used (total)      215      data-arc span      7528 days (20.61 yr)      first obs. used      1999-10-06      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61551      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 21:15:53   Additional Information  Earth MOID = 1.59741 au   Jupiter MOID = 2.34864 au   T_jup = 3.341  [ hide covariance matrix ] Orbital Elements at Epoch 2457534.5 (2016-May-26.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05637860669460584 5.4692e-08   q 2.594235119168922 1.5627e-07 au tp 2458173.281824897832 (2018-Feb-23.78182490) 0.00021315 TDB node 5.375637750734771 6.2823e-05 deg peri 24.04740680956695 7.7713e-05 deg i 3.796465230834439 6.554e-06 deg   Orbit Determination Parameters    # obs. used (total)      215      data-arc span      7528 days (20.61 yr)      first obs. used      1999-10-06      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61551      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 21:15:53   Additional Information  Jupiter MOID = 2.34864 au   T_jup = 3.341  Orbit Covariance (6×6)   e q tp node peri i e 2.991249674527564E-15 -8.459385314561722E-15 -5.3054407738902E-12 -5.627971845653516E-15 -1.159953497565132E-12 9.601890014440346E-16 q -8.459385314561722E-15 2.44198943196109E-14 1.555366133775755E-11 1.533641043610813E-14 3.359384403462054E-12 -2.185789418192251E-15 tp -5.3054407738902E-12 1.555366133775755E-11 4.543336950580198E-8 1.064707547416496E-11 9.756506694019877E-9 -7.998021240697995E-12 node -5.627971845653516E-15 1.533641043610813E-14 1.064707547416496E-11 3.946699104922633E-9 -3.935259933942396E-9 -6.173085748384339E-11 peri -1.159953497565132E-12 3.359384403462054E-12 9.756506694019877E-9 -3.935259933942396E-9 6.039308276000393E-9 5.983500148744093E-11 i 9.601890014440346E-16 -2.185789418192251E-15 -7.998021240697995E-12 -6.173085748384339E-11 5.983500148744093E-11 4.29546923324741E-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 16.7   n/a MPO427525   277771 (2006 DH177)          Discovered 2006-Feb-27 by Mt. Lemmon Survey at Mount Lemmon Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ show close-approach data ] Alternate Designations  2006 DH177 = 2008 SX212  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 23:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin