+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277851 (2006 HJ113) Classification: Main-belt Asteroid          SPK-ID: 2277851 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09387225663220089 4.7007e-08   a 2.692941934860764 2.137e-08 au q 2.440149398455899 1.3277e-07 au i 6.425368159936255 4.7352e-06 deg node 116.1241064732667 3.6003e-05 deg peri 243.22356548137 4.3802e-05 deg M 307.2632780359745 2.4308e-05 deg tp 2459236.955565858185 (2021-Jan-22.45556586) 0.00010855 TDB period 1614.131492037254 4.42 1.9214e-05 5.261e-08 d yr n .2230301569456593 2.6548e-09 deg/d Q 2.94573447126563 2.3376e-08 au   Orbit Determination Parameters    # obs. used (total)      268      data-arc span      8553 days (23.42 yr)      first obs. used      1997-05-09      last obs. used      2020-10-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55419      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 21:15:19   Additional Information  Earth MOID = 1.44398 au   Jupiter MOID = 2.46301 au   T_jup = 3.356  [ 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 16.5   n/a MPO437264   diameter diameter 3.170 km 0.680 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.040   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   277851 (2006 HJ113)          Discovered 2006-Apr-25 by Spacewatch at Kitt Peak Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1980-Aug-24 02:57 00:02 Eunom 0.0401221356429553 0.0401147017963917 0.040129573515123 6.18597452709587 6.18597447053688 2444475.622939523 1.77044486318326 738.924605898078 49.7704562170692 -60.121255288346 104598.522773534 T 19 CATAB v2.0f-lin.ifort 2020-Nov-11 21:15:20 2020-Nov-11 21:15 Alternate Designations  2006 HJ113 = 2009 AU18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 13:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin