+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5379 Abehiroshi (1991 HG) Classification: Main-belt Asteroid          SPK-ID: 2005379 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05442483263016917 1.4837e-08   a 2.395692199488568 7.9456e-09 au q 2.265307052498001 3.7159e-08 au i 3.801121357362896 6.4189e-07 deg node 34.03188944766204 6.802e-06 deg peri 214.0737710363609 1.6727e-05 deg M 324.0151341930045 1.93e-05 deg tp 2459335.882441444160 (2021-May-01.38244144) 7.2837e-05 TDB period 1354.393793804917 3.71 6.738e-06 1.845e-08 d yr n .2658015723688804 1.3223e-09 deg/d Q 2.526077346479135 8.378e-09 au   Orbit Determination Parameters    # obs. used (total)      2879      data-arc span      14405 days (39.44 yr)      first obs. used      1981-09-03      last obs. used      2021-02-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42609      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:28:42   Additional Information  Earth MOID = 1.25126 au   Jupiter MOID = 2.46828 au   T_jup = 3.524  [ 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 12.97   n/a E2021B10   diameter diameter 6.254 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.284   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 5379 Abehiroshi           Discovered 1991 Apr. 16 by S. Otomo and O. Muramatsu at Kiyosato. Named in honor of Hiroshi Abe (b. 1958), a resident of Shimane. Discoverer of numerous minor planets at Yatsuka Observatory since 1993, he is also an active confirmer of new objects in collaboration with S. Nakano. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990728/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1991 HG = 1981 RW3 = 1981 TR3 = 1981 UE16 = 1983 CF8 = 1983 EU2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 08:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin