+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8652 Acacia (1990 EA5) Classification: Main-belt Asteroid          SPK-ID: 2008652 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1708988747171992 3.6679e-08   a 2.46651976206063 8.1418e-09 au q 2.044994310256735 8.9752e-08 au i 1.852103802981151 4.1274e-06 deg node 302.3820305000871 0.0001029 deg peri 350.6041286138896 0.00010336 deg M 236.8559009025703 9.7596e-06 deg tp 2459684.490047455456 (2022-Apr-14.99004746) 3.905e-05 TDB period 1414.898629824812 3.87 7.0057e-06 1.918e-08 d yr n .2544351887912804 1.2598e-09 deg/d Q 2.888045213864526 9.5332e-09 au   Orbit Determination Parameters    # obs. used (total)      1904      data-arc span      25960 days (71.07 yr)      first obs. used      1949-12-22      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52221      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:44:22   Additional Information  Earth MOID = 1.02692 au   Jupiter MOID = 2.29567 au   T_jup = 3.466  [ 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 14.16   n/a E2021B10   diameter diameter 4.098 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.290   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   8652 Acacia           Discovered 1990 Mar. 2 by E. W. Elst at the European Southern Observatory Named for Acacia, belonging to the family Mimosaceae. Acacia mearnsii (mimosa) is a shrub with feathery leaves composed of many small leaflets. The strongly scented tiny yellow flowers are grouped in loose, rounded clusters. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990402/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1990 EA5 = 1979 MC1 = 1990 GQ = 1991 SW1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-04 23:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin