+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1634958482192848 4.6131e-08   a 3.031908885852725 1.4567e-08 au q 2.536204370836647 1.4374e-07 au i 8.653639170177934 4.7328e-06 deg node 357.0987366803307 2.2298e-05 deg peri 163.2884406622114 2.4699e-05 deg M 277.8352392181811 1.1452e-05 deg tp 2459440.604429936256 (2021-Aug-14.10442994) 6.2788e-05 TDB period 1928.291316976738 5.28 1.3896e-05 3.805e-08 d yr n .1866937826409052 1.3454e-09 deg/d Q 3.527613400868802 1.6948e-08 au   Orbit Determination Parameters    # obs. used (total)      3555      data-arc span      36316 days (99.43 yr)      first obs. used      1921-03-03      last obs. used      2020-08-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .37125      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:25:22   Additional Information  Earth MOID = 1.54587 au   Jupiter MOID = 1.45397 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 11.5   n/a MPO452171   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. 2019-August); 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 ] 2020-Oct-20 14:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin