+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3200 Phaethon (1983 TB) Classification: Apollo [NEO, PHA]          SPK-ID: 2003200 [ 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 732 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .8898311197564109 7.6903e-10   a 1.271367883103221 7.589e-10 au q .1400651760591441 9.4019e-10 au i 22.25951266528364 2.4036e-07 deg node 265.2176938903194 6.2411e-07 deg peri 322.1867117766436 5.7322e-07 deg M 228.9572436138191 4.3192e-07 deg tp 2459191.096885655032 (2020-Dec-07.59688566) 7.908e-07 TDB period 523.606803825193 1.43 4.6882e-07 1.284e-09 d yr n .6875388122729333 6.156e-10 deg/d Q 2.402670590147297 1.4342e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -6.292301438281022E-15 6.145E-16 ALN [SET] 1. n/a NK [SET] 0. n/a NM [SET] 2. n/a NN [SET] 0. n/a R0 [SET] 1. n/a   Orbit Determination Parameters    # obs. used (total)      4925      # delay obs. used      8      # Doppler obs. used      0      data-arc span      13597 days (37.23 yr)      first obs. used      1983-10-27      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .31084      source      ORB      producer      Otto Matic      solution date      2021-Jan-17 06:07:10   Additional Information  Earth MOID = .0194361 au   Jupiter MOID = 2.73739 au   T_jup = 4.510   Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2  [ 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 14.3   n/a MPO502184   diameter diameter 6.25 km 0.15 Taylor et al, "Arecibo Radar Observations of near-Earth asteroid (3200) Phaethon during the 2017 apparition", Planetary and Space Science. 10.1016/j.pss.2019.01.009 Delay-depth and 5% bandwidth variations suggest slightly oblong equatorial dimensions of 6.1 x 6.4 km. Thermophysical modeling by Hanus et al. (2016) found effective diameter of 5.1 +/- 0.2km. rotation period rot_per 3.604 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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.] [Ansdell, M.; Meech, K.J.; Hainaut, O.; Buie, M.W.; et al. (2014) Astrophys. J. 793, A50.] [Warner, B.D. (2015) Minor Planet Bull. 42, 115-127.] [Hanus, J.; Delbo, M.; Vokrouhlicky, D.; Pravec, P.; et al. (2016). Astron. Astrophys. 586, A108.] [Warner, B.D. (2017) Minor Planet Bull. 44, 98-107.] [Hanus, J.; Vokrouhlicky, D.; Delbo, M.; Farnocchia, D.; et al. (2018) Astron. Astrophys. 620, L8.] [Kim, M.-J.; Lee, H.-J.; Lee, S.-M.; Kim, D.-H; et al. (2018) Astron. Astrophys. 619, A123.] [Schmidt, R.E. (2018) Minor Planet Bull. 45, 131.] [Warner, B.D; Stephens, R.D. (2018) (3200 Phaethon). http://www.planetarysciences.org/PHP/CS3_Lightcurves.php] [Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 105-120.] 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-24 13:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin