+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15912 (1997 TR26) Classification: Main-belt Asteroid          SPK-ID: 2015912 [ 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 .1914391277077256 3.7347e-08   a 2.431101209029344 1.0595e-08 au q 1.965693314203569 9.0128e-08 au i 3.636887035648692 4.9544e-06 deg node 45.76122314559453 5.2817e-05 deg peri 299.1676535606462 5.4118e-05 deg M 79.00510493133088 1.2887e-05 deg tp 2458896.652519670640 (2020-Feb-17.15251967) 4.8657e-05 TDB period 1384.531961746574 3.79 9.0512e-06 2.478e-08 d yr n .2600156659047896 1.6998e-09 deg/d Q 2.896509103855118 1.2624e-08 au   Orbit Determination Parameters    # obs. used (total)      1599      data-arc span      15475 days (42.37 yr)      first obs. used      1978-10-28      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50336      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:12:17   Additional Information  Earth MOID = .959798 au   Jupiter MOID = 2.51959 au   T_jup = 3.479  [ 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 14.52   n/a E2021B10   diameter diameter 6.987 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15912 (1997 TR26)          Discovered 1997-Oct-13 by Beijing Schmidt CCD Asteroid Program at Xinglong Reference: 20000726/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 TR26 = 1978 UR3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 15:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin