+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15725 (1990 TX4) Classification: Main-belt Asteroid          SPK-ID: 2015725 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .150213275528915 3.3558e-08   a 2.976183458221438 1.5655e-08 au q 2.529121192387023 1.068e-07 au i 8.233914303551874 4.5691e-06 deg node 212.4636809000934 2.3663e-05 deg peri 90.94023403257404 2.9305e-05 deg M 351.9289329072449 1.5825e-05 deg tp 2459242.545200845209 (2021-Jan-28.04520085) 8.2454e-05 TDB period 1875.374362562552 5.13 1.4797e-05 4.051e-08 d yr n .1919616729259795 1.5146e-09 deg/d Q 3.423245724055854 1.8007e-08 au   Orbit Determination Parameters    # obs. used (total)      1541      data-arc span      23669 days (64.80 yr)      first obs. used      1955-11-19      last obs. used      2020-09-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51189      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:06:58   Additional Information  Earth MOID = 1.52928 au   Jupiter MOID = 1.87047 au   T_jup = 3.228  [ 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 13.61   n/a E2021B10   diameter diameter 12.380 km 1.919 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.050   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   15725 (1990 TX4)          Discovered 1990-Oct-09 by McNaught, R. H. at Siding Spring Reference: 20000726/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1990 TX4 = 1980 TQ7 = 1998 BO10  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 18:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin