+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1523822444745221 2.1436e-08   a 3.214172418228171 1.5817e-08 au q 2.72438961101046 7.506e-08 au i 1.048709423237022 7.1644e-07 deg node 20.03229490574422 9.7934e-06 deg peri 309.5321893361821 1.196e-05 deg M 232.5130930660426 5.3763e-06 deg tp 2459945.858597879967 (2023-Jan-01.35859788) 3.3995e-05 TDB period 2104.758062534155 5.76 1.5536e-05 4.254e-08 d yr n .1710410362160844 1.2625e-09 deg/d Q 3.703955225445882 1.8227e-08 au   Orbit Determination Parameters    # obs. used (total)      2180      data-arc span      14061 days (38.50 yr)      first obs. used      1982-09-15      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50806      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:55:39   Additional Information  Earth MOID = 1.71159 au   Jupiter MOID = 1.64674 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 12.90   n/a E2021B10   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-Apr-16 18:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin