+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18589 (1997 YL10) Classification: Main-belt Asteroid          SPK-ID: 2018589 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1291597723610154 3.8172e-08   a 2.246724048181609 5.4667e-09 au q 1.956537681560454 8.6583e-08 au i 3.190634020508124 3.933e-06 deg node 27.7431555761963 5.5284e-05 deg peri 357.2125918194367 5.7046e-05 deg M 308.6902244804956 1.284e-05 deg tp 2459175.815631955611 (2020-Nov-22.31563196) 4.3817e-05 TDB period 1230.050743060227 3.37 4.4894e-06 1.229e-08 d yr n .2926708528335675 1.0682e-09 deg/d Q 2.536910414802765 6.1728e-09 au   Orbit Determination Parameters    # obs. used (total)      1848      data-arc span      9952 days (27.25 yr)      first obs. used      1993-08-15      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48923      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:08:30   Additional Information  Earth MOID = .960298 au   Jupiter MOID = 2.90415 au   T_jup = 3.617  [ hide covariance matrix ] Orbital Elements at Epoch 2457251.5 (2015-Aug-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1299156504836605 3.8104e-08   q 1.95470127516679 8.6501e-08 au tp 2456716.662397960862 (2014-Feb-28.16239796) 4.4987e-05 TDB node 27.80359640505518 5.5223e-05 deg peri 357.3426424157252 5.6961e-05 deg i 3.193052456150406 3.9347e-06 deg   Orbit Determination Parameters    # obs. used (total)      1848      data-arc span      9952 days (27.25 yr)      first obs. used      1993-08-15      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48923      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:08:30   Additional Information  Jupiter MOID = 2.90415 au   T_jup = 3.617  Orbit Covariance (6×6)   e q tp node peri i e 1.451939954148814E-15 -3.291181560171185E-15 -6.718713630154684E-13 -1.302061889741831E-14 -2.092536470321371E-13 -9.091471245895617E-16 q -3.291181560171185E-15 7.482436405764999E-15 1.447446276626874E-12 2.8839350836085E-14 4.546905969203975E-13 2.090162289352518E-15 tp -6.718713630154684E-13 1.447446276626874E-12 2.023874043141053E-9 1.34226275542211E-11 6.349828620052487E-10 1.60992571109655E-13 node -1.302061889741831E-14 2.8839350836085E-14 1.34226275542211E-11 3.049546698153756E-9 -3.040094879249446E-9 -8.492646074290614E-11 peri -2.092536470321371E-13 4.546905969203975E-13 6.349828620052487E-10 -3.040094879249446E-9 3.244522232450984E-9 8.486653819130618E-11 i -9.091471245895617E-16 2.090162289352518E-15 1.60992571109655E-13 -8.492646074290614E-11 8.486653819130618E-11 1.548158280760274E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9   n/a MPO474012   diameter diameter 2.235 km 0.640 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.322   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18589 (1997 YL10)          Discovered 1997-Dec-28 by Kobayashi, T. at Oizumi Reference: 20001111/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-18 12:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin