+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5474 Gingasen (1988 XE1) Classification: Main-belt Asteroid          SPK-ID: 2005474 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06725451467713062 3.5028e-08   a 2.384198729157581 8.1956e-09 au q 2.223850600734256 8.3677e-08 au i 6.139322382850377 3.4537e-06 deg node 246.9218784719117 3.647e-05 deg peri 257.3631014788455 4.5183e-05 deg M 179.7614210094755 2.6263e-05 deg tp 2458529.061721159606 (2019-Feb-14.56172116) 9.8359e-05 TDB period 1344.65882070325 3.68 6.9334e-06 1.898e-08 d yr n .2677259052312778 1.3805e-09 deg/d Q 2.544546857580906 8.7468e-09 au   Orbit Determination Parameters    # obs. used (total)      2470      data-arc span      18225 days (49.90 yr)      first obs. used      1971-01-27      last obs. used      2020-12-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42704      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:24:59   Additional Information  Earth MOID = 1.24572 au   Jupiter MOID = 2.484 au   T_jup = 3.525  [ 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 13.12   n/a E2021B10   diameter diameter 5.046 km 0.485 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 3.6242 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; et al. (2008) Minor Planet Bull. 35, 173-175.] [Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm] [Sada, P.V. (2008) Minor Planet Bull. 35, 161-162.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.480   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   5474 Gingasen (1988 XE1)          Discovered 1988-Dec-03 by Fujii and Watanabe at Kitami Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1988 XE1 = 1955 YK = 1971 BO2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 08:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin