+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   4684 Bendjoya (1978 GJ) Classification: Main-belt Asteroid          SPK-ID: 2004684 [ 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 .1095814675031305 2.8248e-08   a 2.397867916285726 6.0786e-09 au q 2.135106031140463 6.7657e-08 au i 5.273751607778576 3.6547e-06 deg node 220.2367753346673 2.7915e-05 deg peri 50.39707027382914 3.2084e-05 deg M 131.7982863848425 1.525e-05 deg tp 2458703.972193276695 (2019-Aug-08.47219328) 5.7304e-05 TDB period 1356.239260186217 3.71 5.1571e-06 1.412e-08 d yr n .2654398899723421 1.0093e-09 deg/d Q 2.66062980143099 6.7447e-09 au   Orbit Determination Parameters    # obs. used (total)      2766      data-arc span      15623 days (42.77 yr)      first obs. used      1978-04-10      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42839      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:19:39   Additional Information  Earth MOID = 1.12197 au   Jupiter MOID = 2.41043 au   T_jup = 3.514  [ 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 13.24   n/a E2021B10   diameter diameter 5.250 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 12.169 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.233   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   4684 Bendjoya (1978 GJ)          Discovered 1978-Apr-10 by Debehogne, H. at La Silla Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1978 GJ = 1952 HK3 = 1978 JK3 = 1978 JN3 = 1982 MC = 1986 PE4 = 1986 QF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 09:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin