+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11717 (1998 HU94) Classification: Outer Main-belt Asteroid          SPK-ID: 2011717 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1521606187440881 4.1816e-08   a 3.214965489821143 1.7024e-08 au q 2.725774351649068 1.3402e-07 au i 1.048601845191488 4.5595e-06 deg node 20.03525574116923 0.00020846 deg peri 309.4661691503291 0.00020881 deg M 198.3789995515762 1.3625e-05 deg tp 2459945.775039067425 (2023-Jan-01.27503907) 8.2575e-05 TDB period 2105.537109163413 5.76 1.6724e-05 4.579e-08 d yr n .1709777512033677 1.358e-09 deg/d Q 3.704156627993219 1.9614e-08 au   Orbit Determination Parameters    # obs. used (total)      2065      data-arc span      13766 days (37.69 yr)      first obs. used      1982-09-15      last obs. used      2020-05-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50716      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:27:00   Additional Information  Earth MOID = 1.7149 au   Jupiter MOID = 1.64617 au   T_jup = 3.172  [ 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 12.8   n/a MPO279639   diameter diameter 14.820 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   11717 (1998 HU94)          Discovered 1998-Apr-21 by LINEAR at Socorro Reference: 19990928/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 HU94 = 1982 RA2 = 1989 YK9 = 1992 GZ1 = 1992 HV5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 02:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin