+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   219 Thusnelda (A880 SA) Classification: Main-belt Asteroid          SPK-ID: 2000219 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2235658478390684 3.2604e-08   a 2.35357326758278 4.4402e-09 au q 1.827394664564269 7.687e-08 au i 10.86373777186698 3.8579e-06 deg node 200.8109520968088 1.8502e-05 deg peri 142.7273610958627 2.0153e-05 deg M 260.1466815895837 9.4355e-06 deg tp 2459366.305315827255 (2021-May-31.80531583) 3.5007e-05 TDB period 1318.833623100448 3.61 3.7321e-06 1.022e-08 d yr n .2729684728189409 7.7247e-10 deg/d Q 2.879751870601291 5.4329e-09 au   Orbit Determination Parameters    # obs. used (total)      3461      data-arc span      44469 days (121.75 yr)      first obs. used      1898-09-15      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41669      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:09:22   Additional Information  Earth MOID = .833871 au   Jupiter MOID = 2.60175 au   T_jup = 3.498  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.2   n/a MPO473763 IRAS observations used: 17 diameter diameter 37.674 km 0.509 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 59.74 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.] geometric albedo albedo 0.189   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.905   0.005 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=8.00, mean=8.81, max.=10.81) deg. U-B UB 0.482   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=8.00, mean=8.98, max.=10.81) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo 219 Thusnelda (A880 SA)          Discovered 1880-Sep-30 by Palisa, J. at Pola Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-06 10:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin