+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15713 (1989 SM4) Classification: Main-belt Asteroid          SPK-ID: 2015713 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1345412608197438 4.2023e-08   a 3.046733160676008 1.8743e-08 au q 2.636821839857335 1.3522e-07 au i 2.520701167755274 4.0799e-06 deg node 108.9574377718798 9.7118e-05 deg peri 244.9595964365217 9.8259e-05 deg M 334.530851920973 1.6664e-05 deg tp 2459337.923806448437 (2021-May-03.42380645) 9.0454e-05 TDB period 1942.450927998502 5.32 1.7925e-05 4.908e-08 d yr n .1853328672611273 1.7102e-09 deg/d Q 3.456644481494681 2.1265e-08 au   Orbit Determination Parameters    # obs. used (total)      1407      data-arc span      11394 days (31.20 yr)      first obs. used      1989-09-26      last obs. used      2020-12-06      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52351      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:06:40   Additional Information  Earth MOID = 1.63128 au   Jupiter MOID = 1.97679 au   T_jup = 3.223  [ 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 13.84   n/a E2021B10   diameter diameter 8.112 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.097   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15713 (1989 SM4)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla Reference: 20000726/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1989 SM4 = 1993 KM3 = 1994 PP23  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 12:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin