+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   288 Glauke (A890 DA) Classification: Main-belt Asteroid          SPK-ID: 2000288 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2057561010557775 3.3673e-08   a 2.759536926248556 6.404e-09 au q 2.191745367584208 9.2227e-08 au i 4.33830056837032 4.3021e-06 deg node 120.1036890965349 5.2211e-05 deg peri 84.7113900604211 5.3246e-05 deg M 117.097469365445 1.1261e-05 deg tp 2458455.874777466102 (2018-Dec-03.37477747) 5.1889e-05 TDB period 1674.375041362434 4.58 5.8285e-06 1.596e-08 d yr n .2150055937928154 7.4844e-10 deg/d Q 3.327328484912904 7.7217e-09 au   Orbit Determination Parameters    # obs. used (total)      2872      data-arc span      47037 days (128.78 yr)      first obs. used      1891-08-27      last obs. used      2020-06-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47277      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:10:59   Additional Information  Earth MOID = 1.19322 au   Jupiter MOID = 1.64526 au   T_jup = 3.307  [ 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 9.8   n/a MPO492752 IRAS observations used: 2 diameter diameter 28.981 km 0.571 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 1170. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Harris, A.W. (1983) Sky Telescope 65, 504.] [Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.] [Ostro, S.J.; Nolan, M.C.; Margot, J.-L.; Magri, C.; et al. (2001) Icarus 152, 201-204.] [Pilcher, F. (2015) Minor Planet Bull. 42, 6-10.] geometric albedo albedo 0.175   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.845   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.74, mean=14.23, max.=17.34) deg. U-B UB 0.407   0.057 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=8.74, mean=14.23, max.=17.34) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 288 Glauke (A890 DA)          Discovered 1890-Feb-20 by Luther, R. at Dusseldorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A890 DA = 1955 MO = 1959 GB = 1961 WF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 01:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin