+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2062 Aten (1976 AA) Classification: Aten [NEO]          SPK-ID: 2002062 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2455926.5 (2011-Dec-31.0) TDB Reference: JPL 148 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1827171340905242 4.0606e-09   a .9667898316324987 8.7389e-10 au q .790140764328748 3.5933e-09 au i 18.93368681084476 6.0761e-06 deg node 108.6003764318441 5.23e-06 deg peri 148.0354055966093 4.778e-06 deg M 172.267762763347 2.4686e-06 deg tp 2455760.350877980336 (2011-Jul-17.85087798) 2.3389e-06 TDB period 347.2134482250642 0.95 4.7078e-07 1.289e-09 d yr n 1.036826199677172 1.4058e-09 deg/d Q 1.143438898936249 1.0336e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -1.196928636811954E-14 1.63E-15 ALN [SET] 1. n/a NK [SET] 0. n/a NM [SET] 2. n/a R0 [SET] 1. n/a   Orbit Determination Parameters    # obs. used (total)      818      # delay obs. used      5      # Doppler obs. used      2      data-arc span      21601 days (59.14 yr)      first obs. used      1955-12-17      last obs. used      2015-02-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      0      norm. resid. RMS      .43362      source      ORB      producer      Giorgini      solution date      2015-Feb-24 14:25:50   Additional Information  Earth MOID = .113146 au   Jupiter MOID = 3.91861 au   T_jup = 6.184  [ 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 17.1   n/a MPO492774   diameter diameter 1.1 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543   rotation period rot_per 42.15 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; et al. (1995) Icarus 117, 62-70; Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; Harris, A.W.; Hahn, G.; Neukum, G.; Pravec, M.; Wolf, M. (1995) Lunar & Planetary Science XXVI, 1003-1004.] [Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.26   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543   B-V BV 0.930   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=59.82 deg. U-B UB 0.460   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=59.82 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B Sr   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) 2062 Aten (1976 AA)          Discovered 1976-Jan-07 by Helin, E. F. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-27 07:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin