+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58538 (1997 EN15) Classification: Main-belt Asteroid          SPK-ID: 2058538 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .004071841123820114 5.4936e-08   a 3.143704296913145 2.4724e-08 au q 3.130903632475845 1.8651e-07 au i 2.658868615172317 6.2171e-06 deg node 14.99386309781598 0.0001062 deg peri 320.5256000324557 0.00076791 deg M 264.1062164183434 0.00076045 deg tp 2459542.811624406322 (2021-Nov-24.31162441) 0.0043004 TDB period 2035.921177518558 5.57 2.4018e-05 6.576e-08 d yr n .1768241344386323 2.086e-09 deg/d Q 3.156504961350446 2.4825e-08 au   Orbit Determination Parameters    # obs. used (total)      456      data-arc span      8533 days (23.36 yr)      first obs. used      1997-03-04      last obs. used      2020-07-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57339      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:50:44   Additional Information  Earth MOID = 2.11903 au   Jupiter MOID = 1.82309 au   T_jup = 3.208  [ 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 15.2   n/a MPO468485   diameter diameter 5.665 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.050   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58538 (1997 EN15)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 EN15 = 2000 WK102  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 14:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin