+ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1090950972433826 2.9365e-08   a 2.258362227153469 5.9746e-09 au q 2.011985980371379 6.5871e-08 au i 3.740644463423253 3.7714e-06 deg node 176.0797983740914 4.9663e-05 deg peri 304.0624442382704 5.2904e-05 deg M 151.4752762566826 1.7938e-05 deg tp 2458478.911411400441 (2018-Dec-26.41141140) 6.1299e-05 TDB period 1239.62072581173 3.39 4.9192e-06 1.347e-08 d yr n .2904114077023554 1.1524e-09 deg/d Q 2.504738473935559 6.6264e-09 au   Orbit Determination Parameters    # obs. used (total)      2927      data-arc span      32601 days (89.26 yr)      first obs. used      1931-03-15      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44744      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:45:26   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-Jul-11 02:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin