+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1135 Colchis (1929 TA) Classification: Main-belt Asteroid          SPK-ID: 2001135 [ 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 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1150737737378533 3.5384e-08   a 2.667067495093154 7.7158e-09 au q 2.360157973619221 9.6242e-08 au i 4.540162656326638 3.8734e-06 deg node 350.6320931659282 4.011e-05 deg peri 3.11488566103182 4.2557e-05 deg M 314.9597531933827 1.4017e-05 deg tp 2459199.543361443954 (2020-Dec-16.04336144) 6.2043e-05 TDB period 1590.924011306613 4.36 6.9037e-06 1.89e-08 d yr n .2262835920769936 9.8195e-10 deg/d Q 2.973977016567087 8.6036e-09 au   Orbit Determination Parameters    # obs. used (total)      3239      data-arc span      33285 days (91.13 yr)      first obs. used      1929-09-29      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42372      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:58:33   Additional Information  Earth MOID = 1.35496 au   Jupiter MOID = 2.4431 au   T_jup = 3.369  [ 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 10.6   n/a MPO492763   diameter diameter 50.592 km 0.953 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 23.47 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Stephens, R.D.; Malcolm, G. (2001) Minor Planet Bull. 28, 61.] [Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.] [Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B Xk   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) 1135 Colchis (1929 TA)          Discovered 1929-Oct-03 by Neujmin, G. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1929 TA = 1936 FJ1 = 1940 EP = 1954 LL = 1958 FO = A911 MJ = A916 UH  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 06:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin