+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   3200 Phaethon (1983 TB) Classification: Apollo [NEO, PHA]          SPK-ID: 2003200 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 348 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .8899340762416096 2.4003e-08   a 1.271283158413085 2.0711e-09 AU q .1399249551892204 3.0614e-08 AU i 22.24046512739926 7.2559e-06 deg node 265.2668409962748 9.9847e-06 deg peri 322.148454511904 9.5716e-06 deg M 241.1324290798003 7.0783e-06 deg tp 2456573.371242890055 (2013-Oct-07.87124289) 1.0649e-05 JED period 523.5544645073954 1.43 1.2794e-06 3.503e-09 d yr n .6876075449737948 1.6803e-09 deg/d Q 2.40264136163695 3.9143e-09 AU   Orbit Determination Parameters    # obs. used (total)      2519      # delay obs. used      1      # Doppler obs. used      0      data-arc span      10699 days (29.29 yr)      first obs. used      1983-10-11      last obs. used      2013-01-25      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .48423      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 15:37:33   Additional Information  Earth MOID = .0199413 AU   T_jup = 4.510  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.51 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18 diameter diameter 5.10 km 0.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18 rotation period rot_per 3.604 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Meech, K.J.; Hainaut, O.R.; Buie, M.W. (1996) Abstracts of ACM 1996, 42.] [Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.] [Krugly, Yu.N.; Bel'skaya, I.N.; Shevchenko, V.G.; et al. (2002) Icarus 158, 294-304.] [Pravec, P.; Wolf, M.; Sarounova, L. (2004) http://www.asu.cas.cz/~ppravec/neo.htm] [Pan, S.K-S.; Abe, S.; Kinos, D. (2012) ACM 2012, #6294.] geometric albedo albedo 0.1066   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18 Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices SMASSII spectral type spec_B B   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) 3200 Phaethon (1983 TB)          Discovered 1983-Oct-11 by IRAS Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-Jun-19 06:42 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin