+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   396 Aeolia (A894 XA) Classification: Main-belt Asteroid          SPK-ID: 2000396 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1606234709182868 3.1108e-08   a 2.74203146315079 9.0013e-09 au q 2.301596852172362 8.5234e-08 au i 2.550212686731751 3.5332e-06 deg node 249.9182515157244 9.5271e-05 deg peri 21.61465792727455 9.6281e-05 deg M 26.04204109608341 1.3793e-05 deg tp 2458880.528083483253 (2020-Feb-01.02808348) 6.3623e-05 TDB period 1658.467928327038 4.54 8.1664e-06 2.236e-08 d yr n .2170678093022553 1.0689e-09 deg/d Q 3.182466074129218 1.0447e-08 au   Orbit Determination Parameters    # obs. used (total)      2894      data-arc span      34760 days (95.17 yr)      first obs. used      1925-09-15      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41931      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:53:14   Additional Information  Earth MOID = 1.28562 au   Jupiter MOID = 1.91983 au   T_jup = 3.329  [ 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 10.1   n/a MPO394991   diameter diameter 39.242 km 0.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 14.353 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pilcher, F. (2017) Minor Planet Bull. 44, 112-114.] geometric albedo albedo 0.126   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B Xe   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 396 Aeolia (A894 XA)          Discovered 1894-Dec-01 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A894 XA = 1925 RH = 1950 CL = A916 UG  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 19:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin