+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   223 Rosa (A882 EA) Classification: Main-belt Asteroid          SPK-ID: 2000223 [ 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 54 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1191426666930222 2.6405e-08   a 3.092985868680518 9.8473e-09 au q 2.724479284242087 8.5134e-08 au i 1.923215194805796 2.9894e-06 deg node 47.55952534786271 8.7735e-05 deg peri 64.90326875726943 8.8758e-05 deg M 235.7036715376653 1.4999e-05 deg tp 2459886.495284151063 (2022-Nov-02.99528415) 8.3896e-05 TDB period 1986.851143147145 5.44 9.4884e-06 2.598e-08 d yr n .181191228765012 8.653e-10 deg/d Q 3.461492453118948 1.102e-08 au   Orbit Determination Parameters    # obs. used (total)      3483      data-arc span      49409 days (135.27 yr)      first obs. used      1885-10-04      last obs. used      2021-01-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4359      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:30:52   Additional Information  Earth MOID = 1.74165 au   Jupiter MOID = 1.63769 au   T_jup = 3.212  [ 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 9.91   n/a E2021B10 IRAS observations used: 17 diameter diameter 79.806 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 20.283 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pilcher, F. (2012) Minor Planet Bull. 39, 171-173.] geometric albedo albedo 0.020   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.706   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.93 deg. U-B UB 0.285   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=2.93 deg. Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices 223 Rosa (A882 EA)          Discovered 1882-Mar-09 by Palisa, J. at Vienna Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A882 EA = 1942 EL = A887 BA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 19:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin