+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   755 Quintilla (A908 GC) Classification: Main-belt Asteroid          SPK-ID: 2000755 [ 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 .1373120836693116 3.3108e-08   a 3.181395594854711 1.3335e-08 au q 2.744551536748842 1.063e-07 au i 3.242291184993676 3.8072e-06 deg node 176.6728233285153 6.4644e-05 deg peri 43.96458189511396 6.6051e-05 deg M 294.1292887170849 1.4762e-05 deg tp 2459379.740571384517 (2021-Jun-14.24057138) 8.5851e-05 TDB period 2072.645080634451 5.67 1.3031e-05 3.568e-08 d yr n .173691098086992 1.092e-09 deg/d Q 3.61823965296058 1.5166e-08 au   Orbit Determination Parameters    # obs. used (total)      3451      data-arc span      38428 days (105.21 yr)      first obs. used      1915-09-01      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41407      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 19:35:15   Additional Information  Earth MOID = 1.73779 au   Jupiter MOID = 1.35644 au   T_jup = 3.182  [ 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 9.7   n/a MPO502160 IRAS observations used: 7 diameter diameter 41.210 km 0.655 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 4.552 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Buchheim, R.K.; Pray, D. (2005) Minor Planet Bull. 32, 1.] [Masiero, J.; Jedicke, R.; Durecy, J.; Gwyn, S.; et al. (2009) Icarus 204, 145-171.] [Fauerbach, M.; Fauerbach, M. (2019) Minor Planet Bull. 46, 138-139.] [Franco, L.; Marchini, A.; Saya, L.-F.; Galli, G.; et al. (2020) Minor Planet Bull. 47, 242-246.] [Franco, L.; Buchheim, R.K.; Pray, D.; Fauerbach, M.; et al. (2020) Minor Planet Bull. 47, 267-269.] geometric albedo albedo 0.124   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.688   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.71, mean=5.99, max.=16.48) deg. U-B UB 0.220   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.71, mean=5.99, max.=16.48) deg. Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo 755 Quintilla (A908 GC)          Discovered 1908-Apr-06 by Metcalf, J. H. at Taunton Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A908 GC = 1933 UF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 06:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin