+ 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 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1634958431624334 4.514e-08   a 3.031908883845651 1.3969e-08 au q 2.536204384489634 1.4147e-07 au i 8.653638486925876 4.3142e-06 deg node 357.098736582059 2.2292e-05 deg peri 163.2884398168098 2.4599e-05 deg M 277.8352407793638 1.0946e-05 deg tp 2459440.604421136979 (2021-Aug-14.10442114) 5.9868e-05 TDB period 1928.291315061993 5.28 1.3326e-05 3.648e-08 d yr n .1866937828262875 1.2902e-09 deg/d Q 3.527613383201668 1.6252e-08 au   Orbit Determination Parameters    # obs. used (total)      3777      data-arc span      36414 days (99.70 yr)      first obs. used      1921-03-03      last obs. used      2020-11-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .3663      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:57:19   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. 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-Jan-21 19:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin