+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   154590 (2003 MA3) Classification: Apollo [NEO, PHA]          SPK-ID: 2154590 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2457209.5 (2015-Jul-06.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4022047894439031 6.4132e-08   a 1.105347040405682 4.399e-09 au q .660771166756873 7.0957e-08 au i 1.412937837587411 4.0267e-06 deg node 152.6498556533086 0.00027892 deg peri 228.9122390452903 0.0002779 deg M 60.61390673040963 8.0668e-06 deg tp 2457138.031250773164 (2015-Apr-25.53125077) 9.4411e-06 TDB period 424.4694181500926 1.16 2.5339e-06 6.937e-09 d yr n .8481176372350666 5.063e-09 deg/d Q 1.549922914054491 6.1683e-09 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A2 [EST] -7.25259705838562E-14 1.583E-14 ALN [SET] 1. n/a NK [SET] 0. n/a NM [SET] 2. n/a R0 [SET] 1. n/a   Orbit Determination Parameters    # obs. used (total)      115      data-arc span      7418 days (20.31 yr)      first obs. used      1998-01-29      last obs. used      2018-05-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .461      source      ORB      producer      Otto Matic      solution date      2019-Jan-14 15:30:19   Additional Information  Earth MOID = .0131168 au   Jupiter MOID = 3.90538 au   T_jup = 5.551   Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2  [ 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 21.7   n/a MPO224075   diameter diameter 0.086 km 0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)   geometric albedo albedo 0.530   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)   154590 (2003 MA3)          Discovered 2003-Jun-26 by NEAT at Haleakala Reference: 20070402/Numbers.arc Last Updated: 2007-04-04 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-10 00:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin