+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3996 Fugaku (1988 XG1) Classification: Main-belt Asteroid          SPK-ID: 2003996 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1032548648914903 2.7937e-08   a 2.259523623323669 6.8816e-09 au q 2.026216816878253 6.4089e-08 au i 2.284227796995648 3.068e-06 deg node 90.75121287275164 8.7785e-05 deg peri 156.3701253507302 8.9428e-05 deg M 268.4885037301221 1.8064e-05 deg tp 2459315.852960063147 (2021-Apr-11.35296006) 6.2617e-05 TDB period 1240.577088674506 3.40 5.6674e-06 1.552e-08 d yr n .2901875290834542 1.3257e-09 deg/d Q 2.492830429769085 7.5921e-09 au   Orbit Determination Parameters    # obs. used (total)      2842      data-arc span      29628 days (81.12 yr)      first obs. used      1939-03-17      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42598      source      ORB      producer      Otto Matic      solution date      2020-May-20 02:02:16   Additional Information  Earth MOID = 1.01269 au   Jupiter MOID = 2.5171 au   T_jup = 3.613  [ 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 13.0   n/a MPO302087   diameter diameter 5.231 km 0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 7.193 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.409   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3996 Fugaku (1988 XG1)          Discovered 1988-Dec-05 by Arai, M. and Mori, H. at Yorii Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1988 XG1 = 1939 FZ = 1957 TB = 1981 SO5 = 1981 UM16  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-25 07:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin