+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11335 Santiago (1996 HW23) Classification: Main-belt Asteroid          SPK-ID: 2011335 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1609474673184972 3.407e-08   a 2.363795745269125 6.048e-09 au q 1.98334880680982 8.0544e-08 au i 6.305904965920099 3.1295e-06 deg node 69.47117045684917 3.4922e-05 deg peri 64.94529885311165 3.6874e-05 deg M 43.81614166562902 1.0509e-05 deg tp 2459234.935858190503 (2021-Jan-20.43585819) 3.8787e-05 TDB period 1327.435251950635 3.63 5.0946e-06 1.395e-08 d yr n .2711996682858832 1.0408e-09 deg/d Q 2.74424268372843 7.0214e-09 au   Orbit Determination Parameters    # obs. used (total)      1736      data-arc span      24305 days (66.54 yr)      first obs. used      1954-11-24      last obs. used      2021-06-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4684      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 16:32:36   Additional Information  Earth MOID = 1.0079 au   Jupiter MOID = 2.3131 au   T_jup = 3.524  [ show covariance matrix ] [ 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 MPO452331   diameter diameter 3.466 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.161   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11335 Santiago           Discovered 1996 Apr. 20 by E. W. Elst at the European Southern Observatory. The capital of Chile, Santiago was founded in 1541 by the Spanish conquistador Pedro de Valdivia. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000320/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1996 HW23 = 1998 XE50  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-02 07:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin