+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   293 Brasilia (A890 KA) Classification: Main-belt Asteroid          SPK-ID: 2000293 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1058695949709894 3.6893e-08   a 2.860253784964356 1.1038e-08 au q 2.55743987523594 1.0688e-07 au i 15.58215511784736 4.313e-06 deg node 61.30044362004114 1.5479e-05 deg peri 86.83278916588014 2.7081e-05 deg M 33.15020303327624 2.0597e-05 deg tp 2458837.799468294333 (2019-Dec-20.29946829) 0.00010118 TDB period 1766.872780695945 4.84 1.0228e-05 2.8e-08 d yr n .2037498137575028 1.1794e-09 deg/d Q 3.163067694692772 1.2207e-08 au   Orbit Determination Parameters    # obs. used (total)      2807      data-arc span      40658 days (111.32 yr)      first obs. used      1909-04-20      last obs. used      2020-08-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38067      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:31:13   Additional Information  Earth MOID = 1.62706 au   Jupiter MOID = 2.02078 au   T_jup = 3.239  [ 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 10.2   n/a MPO502155 IRAS observations used: 31 diameter diameter 57.486 km 1.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.173 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Oey, J. (2006) Minor Planet Bull. 33, 96-99.] [Stephens, R.D. (2006) Minor Planet Bull. 33, 100-101.] [Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Pilcher, F. (2018) Posting on CALL web site: http://www.minorplanet.info/call.html] [Pilcher, F. (2019) Minor Planet Bull. 46, 130-131.] geometric albedo albedo 0.056   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.721   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=9.47, mean=10.28, max.=10.83) deg. U-B UB 0.352   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=9.47, mean=10.28, max.=10.83) deg. Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 293 Brasilia (A890 KA)          Discovered 1890-May-20 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A890 KA = A909 HB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-04 03:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin