+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2460 Mitlincoln (1980 TX4) Classification: Main-belt Asteroid          SPK-ID: 2002460 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1090950975110538 2.9331e-08   a 2.258362226930778 5.9288e-09 au q 2.011985979568484 6.5761e-08 au i 3.740644945449265 3.6982e-06 deg node 176.0798008021765 4.9526e-05 deg peri 304.0624429331391 5.2604e-05 deg M 151.475275397236 1.7619e-05 deg tp 2458478.911414437000 (2018-Dec-26.41141444) 6.0142e-05 TDB period 1239.620725628377 3.39 4.8815e-06 1.336e-08 d yr n .2904114077453103 1.1436e-09 deg/d Q 2.504738474293072 6.5756e-09 au   Orbit Determination Parameters    # obs. used (total)      2983      data-arc span      32644 days (89.37 yr)      first obs. used      1931-03-15      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44347      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:51:32   Additional Information  Earth MOID = 1.03059 au   Jupiter MOID = 2.55435 au   T_jup = 3.611  [ 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 12.5   n/a MPO473798   diameter diameter 9.263 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.0068 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Benishek, V. (2019) Minor Planet Bull. 46-4, in press.] geometric albedo albedo 0.203   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   2460 Mitlincoln (1980 TX4)          Discovered 1980-Oct-01 by Taff, L. G. and Beatty, D. at Socorro Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1980 TX4 = 1931 EK = 1941 BG = 1951 AL1 = 1952 MM = 1960 XA = 1970 SB1 = 1970 WO = 1972 HC = 1973 QP = 1975 EG = 1980 RR4 = 1980 TW3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-30 23:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin