+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11959 Okunokeno (1994 GG1) Classification: Main-belt Asteroid          SPK-ID: 2011959 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1534424423663475 3.9074e-08   a 2.646769106416327 1.3003e-08 au q 2.240642390348011 1.0073e-07 au i 13.29489602252278 3.159e-06 deg node 142.3500106540776 1.8878e-05 deg peri 69.97364908258018 2.2726e-05 deg M 19.03750670976696 1.104e-05 deg tp 2458917.327437747617 (2020-Mar-08.82743775) 4.8422e-05 TDB period 1572.79642063089 4.31 1.159e-05 3.173e-08 d yr n .2288916704525527 1.6867e-09 deg/d Q 3.052895822484643 1.4998e-08 au   Orbit Determination Parameters    # obs. used (total)      1773      data-arc span      13012 days (35.62 yr)      first obs. used      1985-02-13      last obs. used      2020-09-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47927      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:56:09   Additional Information  Earth MOID = 1.27702 au   Jupiter MOID = 2.02462 au   T_jup = 3.338  [ 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 13.8   n/a MPO431638   diameter diameter 6.663 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.144   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11959 Okunokeno           Discovered 1994 Apr. 13 by K. Endate and K. Watanabe at Kitami. Keno Okuno (b. 1932), an amateur astronomer and a member of the Kawasaki Astronomical Association, has greatly contributed to the popularization of astronomy. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030910/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1994 GG1 = 1985 CD1 = 1998 HX6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 15:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin