+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227295 (2005 SP219) Classification: Main-belt Asteroid          SPK-ID: 2227295 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2860674463926965 4.7115e-08   a 2.653140583433348 2.178e-08 au q 1.894163431809742 1.2268e-07 au i 8.747932274773522 5.0543e-06 deg node 82.51353237417213 4.5791e-05 deg peri 329.6026487217125 4.7326e-05 deg M 205.1385640401432 1.6176e-05 deg tp 2459879.515365775437 (2022-Oct-27.01536578) 7.7278e-05 TDB period 1578.479045890564 4.32 1.9437e-05 5.322e-08 d yr n .2280676458374468 2.8083e-09 deg/d Q 3.412117735056955 2.801e-08 au   Orbit Determination Parameters    # obs. used (total)      369      data-arc span      8496 days (23.26 yr)      first obs. used      1997-02-10      last obs. used      2020-05-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55155      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:39:13   Additional Information  Earth MOID = .910697 au   Jupiter MOID = 1.98054 au   T_jup = 3.314  [ 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 16.37   n/a E2021B55   diameter diameter 1.645 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.216   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   227295 (2005 SP219)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2005 SP219 = 2006 AP21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 03:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin