+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   175089 (2004 HY47) Classification: Main-belt Asteroid          SPK-ID: 2175089 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1432040712620684 1.0416e-07   a 2.582339596479182 2.4453e-08 au q 2.212538052882116 2.8541e-07 au i 7.129228174200754 7.1856e-06 deg node 327.3543212591886 3.0553e-05 deg peri 179.8264506027206 3.7069e-05 deg M 57.04180686615168 1.6007e-05 deg tp 2458960.335268074201 (2020-Apr-20.83526807) 6.74e-05 TDB period 1515.718176602718 4.15 2.1529e-05 5.894e-08 d yr n .2375111716393693 3.3736e-09 deg/d Q 2.952141140076247 2.7954e-08 au   Orbit Determination Parameters    # obs. used (total)      457      data-arc span      6834 days (18.71 yr)      first obs. used      2001-08-24      last obs. used      2020-05-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51717      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:03:21   Additional Information  Earth MOID = 1.22411 au   Jupiter MOID = 2.0575 au   T_jup = 3.399  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.27   n/a E2021B55   175089 (2004 HY47)          Discovered 2004-Apr-22 by Siding Spring Survey at Siding Spring Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 11:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin