+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58132 (1981 EW39) Classification: Main-belt Asteroid          SPK-ID: 2058132 [ 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 .1039289229399231 4.5606e-08   a 3.129600455312917 2.8275e-08 au q 2.804344450759953 1.5356e-07 au i 10.30136678246823 6.1272e-06 deg node 358.1656047015852 2.5912e-05 deg peri 276.7675922085522 4.0022e-05 deg M 334.4928885376229 3.1598e-05 deg tp 2459343.781642215478 (2021-May-09.28164222) 0.00017782 TDB period 2022.235691942397 5.54 2.7406e-05 7.503e-08 d yr n .1780207922520707 2.4126e-09 deg/d Q 3.454856459865882 3.1214e-08 au   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      15182 days (41.57 yr)      first obs. used      1978-10-26      last obs. used      2020-05-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61391      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:52:13   Additional Information  Earth MOID = 1.81122 au   Jupiter MOID = 1.77703 au   T_jup = 3.180  [ hide covariance matrix ] Orbital Elements at Epoch 2457498.5 (2016-Apr-20.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1028229155061297 4.5602e-08   q 2.809721855395765 1.5352e-07 au tp 2457317.392242662352 (2015-Oct-21.89224266) 0.0001768 TDB node 358.1955638145311 2.5908e-05 deg peri 276.2951088755511 4.0248e-05 deg i 10.29990586925521 6.1261e-06 deg   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      15182 days (41.57 yr)      first obs. used      1978-10-26      last obs. used      2020-05-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61391      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:52:13   Additional Information  Jupiter MOID = 1.77703 au   T_jup = 3.180  Orbit Covariance (6×6)   e q tp node peri i e 2.079539541315114E-15 -6.915159238148653E-15 -2.99935094623123E-13 5.527920377486545E-15 -8.586903650741781E-16 -2.793712409393966E-16 q -6.915159238148653E-15 2.35675562668536E-14 1.040234862265845E-12 -1.97515467772156E-14 1.806991445044075E-14 6.074050750677033E-15 tp -2.99935094623123E-13 1.040234862265845E-12 3.125875268764239E-8 -3.495139097237872E-11 5.466820005940374E-9 9.528031892803905E-12 node 5.527920377486545E-15 -1.97515467772156E-14 -3.495139097237872E-11 6.712319268290744E-10 -6.657510327378537E-10 2.376062429669548E-12 peri -8.586903650741781E-16 1.806991445044075E-14 5.466820005940374E-9 -6.657510327378537E-10 1.61993924507532E-9 -3.72343961716141E-13 i -2.793712409393966E-16 6.074050750677033E-15 9.528031892803905E-12 2.376062429669548E-12 -3.72343961716141E-13 3.752938404194094E-11 [ 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 14.85   n/a E2021B10   58132 (1981 EW39)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin