+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1708757499759276 3.8572e-08   a 2.466704202872265 8.481e-09 au q 2.045204272237694 9.3861e-08 au i 1.852163374874281 4.2256e-06 deg node 302.3824017144357 0.00010583 deg peri 350.5582510426696 0.0001063 deg M 186.0319892765852 9.7287e-06 deg tp 2459684.318638926464 (2022-Apr-14.81863893) 3.9118e-05 TDB period 1415.057337207304 3.87 7.2978e-06 1.998e-08 d yr n .2544066523201671 1.312e-09 deg/d Q 2.888204133506836 9.9302e-09 au   Orbit Determination Parameters    # obs. used (total)      1857      data-arc span      25672 days (70.29 yr)      first obs. used      1949-12-22      last obs. used      2020-04-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52447      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:00:54   Additional Information  Earth MOID = 1.02909 au   Jupiter MOID = 2.29604 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 14.2   n/a MPO452292   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 ] 2020-Sep-30 07:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin