+ 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 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1634653768528787 4.4005e-08   a 3.032537903069306 1.2375e-08 au q 2.536822951923444 1.385e-07 au i 8.6534447286617 3.6614e-06 deg node 357.0918356696422 2.2113e-05 deg peri 163.2169208979481 2.4265e-05 deg M 315.2367742188351 1.0104e-05 deg tp 2459440.342784927293 (2021-Aug-13.84278493) 5.4595e-05 TDB period 1928.891429673424 5.28 1.1807e-05 3.233e-08 d yr n .1866356988588782 1.1424e-09 deg/d Q 3.528252854215169 1.4398e-08 au   Orbit Determination Parameters    # obs. used (total)      4054      data-arc span      36484 days (99.89 yr)      first obs. used      1921-03-03      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .35778      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:51:10   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-Feb-28 17:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin