+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   948 Jucunda (A921 EL) Classification: Main-belt Asteroid          SPK-ID: 2000948 [ 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 47 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1634653781966572 2.358e-08   a 3.03253789991378 1.1021e-08 au q 2.536822945208677 7.4022e-08 au i 8.653440027424915 5.7707e-07 deg node 357.0918697397919 3.5415e-06 deg peri 163.216885612871 7.8195e-06 deg M 315.2367780003173 4.0085e-06 deg tp 2459440.342764291636 (2021-Aug-13.84276429) 2.1733e-05 TDB period 1928.891426662744 5.28 1.0516e-05 2.879e-08 d yr n .1866356991501855 1.0175e-09 deg/d Q 3.528252854618883 1.2823e-08 au   Orbit Determination Parameters    # obs. used (total)      4170      data-arc span      36536 days (100.03 yr)      first obs. used      1921-03-03      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .35542      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:40:24   Additional Information  Earth MOID = 1.54626 au   Jupiter MOID = 1.45258 au   T_jup = 3.205  [ 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 11.52   n/a E2021B10   diameter diameter 17.331 km 0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 26.24 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2011) Minor Planet Bull. 38, 211-212.] geometric albedo albedo 0.130   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   948 Jucunda (A921 EL)          Discovered 1921-Mar-03 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 03:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin