+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180 Garumna (A878 BA) Classification: Main-belt Asteroid          SPK-ID: 2000180 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1673893247434168 3.6975e-08   a 2.720860832454903 9.2495e-09 au q 2.265417774989466 1.0017e-07 au i .8677905246462392 4.3334e-06 deg node 311.8667592700203 0.00026189 deg peri 176.1795966735729 0.00026218 deg M 248.97362337845 1.3979e-05 deg tp 2459506.070338430188 (2021-Oct-18.57033843) 6.4905e-05 TDB period 1639.298042259455 4.49 8.3591e-06 2.289e-08 d yr n .2196061916256606 1.1198e-09 deg/d Q 3.17630388992034 1.0798e-08 au   Orbit Determination Parameters    # obs. used (total)      2836      data-arc span      36996 days (101.29 yr)      first obs. used      1919-04-21      last obs. used      2020-08-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46221      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:11:35   Additional Information  Earth MOID = 1.28049 au   Jupiter MOID = 1.88243 au   T_jup = 3.338  [ 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 MPO502154   diameter diameter 23.440 km 0.414 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 23.866 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Stephens, R.D. (2008) Minor Planet Bull. 35, 60-61.] [Clark, M. (2010) Minor Planet Bull. 37, 89-92.] [Pilcher, F.; Benishek, V.; Delos, S.; Barker, T.; et al. (2012) Minor Planet Bull. 39, 46.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.242   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.829   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.69, mean=6.06, max.=9.42) deg. U-B UB 0.451   0.052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.69, mean=6.06, max.=9.42) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices SMASSII spectral type spec_B Sq   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) 180 Garumna (A878 BA)          Discovered 1878-Jan-29 by Perrotin, J. at Toulouse 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 ] 2020-Sep-29 14:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin