+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   155 Scylla (A875 VE) Classification: Main-belt Asteroid          SPK-ID: 2000155 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2757807358778859 3.3755e-08   a 2.759568178643748 8.4321e-09 au q 1.998532435632178 9.3861e-08 au i 11.37060152100809 5.0544e-06 deg node 40.95338414574646 1.7455e-05 deg peri 46.06285268502759 1.9459e-05 deg M 175.0298814508737 8.6309e-06 deg tp 2458186.414878991883 (2018-Mar-08.91487899) 3.8221e-05 TDB period 1674.403485471019 4.58 7.6744e-06 2.101e-08 d yr n .2150019413622578 9.8544e-10 deg/d Q 3.520603921655318 1.0758e-08 au   Orbit Determination Parameters    # obs. used (total)      2274      data-arc span      52858 days (144.72 yr)      first obs. used      1875-11-09      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41704      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:11:01   Additional Information  Earth MOID = 1.03225 au   Jupiter MOID = 1.85446 au   T_jup = 3.258  [ 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 11.2   n/a MPO473762   diameter diameter 39.605 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 7.9597 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Addleman, D.; Covele, B.; Duncan, A.; Johnson, J.; et al. (2005) Minor Planet Bull. 32, 76-78.] [Owings, L.E. (2009) Minor Planet Bull. 36, 51-52.] [Pilcher, F.; Jardine, D. (2009) Minor Planet Bull. 36, 52-54.] [Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.] geometric albedo albedo 0.027   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.688   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.15, mean=12.52, max.=16.90) deg. U-B UB 0.234   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.15, mean=12.52, max.=16.90) deg. Tholen spectral type spec_T XFC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 155 Scylla (A875 VE)          Discovered 1875-Nov-08 by Palisa, J. at Pola Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A875 VE = 1930 UN = 1930 XS = 1934 RU = 1939 TK = 1941 HL = 1950 FL = 1950 FN = A907 TJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-28 15:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin