+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3854 George (1983 EA) Classification: Mars-crossing Asteroid          SPK-ID: 2003854 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1338710588446294 3.4377e-08   a 1.892545876696111 4.7897e-09 au q 1.639188756270765 6.5949e-08 au i 24.20786280340243 5.9339e-06 deg node 8.364751777903161 9.0713e-06 deg peri 87.62507383717578 2.7889e-05 deg M 240.7877109846332 2.4703e-05 deg tp 2459515.410090691039 (2021-Oct-27.91009069) 6.5607e-05 TDB period 950.9727024380894 2.60 3.6101e-06 9.884e-09 d yr n .3785597621015172 1.4371e-09 deg/d Q 2.145902997121456 5.4309e-09 au   Orbit Determination Parameters    # obs. used (total)      1492      data-arc span      13757 days (37.66 yr)      first obs. used      1983-03-13      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38148      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:14:28   Additional Information  Earth MOID = .788534 au   Jupiter MOID = 3.05548 au   T_jup = 3.840  [ 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 14.19   n/a E2021B10   diameter diameter 3.023 km 0.554 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   rotation period rot_per 3.3398 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Warner, B.D.; Pravec, P.; Kusnirak, P.; Foote, C.; et al. (2006) Minor Planet Bull. 33, 34-35.] [Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.] geometric albedo albedo 0.385   0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   3854 George (1983 EA)          Discovered 1983-Mar-13 by Shoemaker, C. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 23:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin