+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2019 van Albada (1935 SX1) Classification: Main-belt Asteroid          SPK-ID: 2002019 [ 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 .1651114447570583 3.0967e-08   a 2.241483412551671 6.1233e-09 au q 1.871388847906283 6.9545e-08 au i 4.044126956378314 3.9022e-06 deg node 252.1931473666514 5.0056e-05 deg peri 24.86971136654774 5.1579e-05 deg M 155.6369333880602 1.3363e-05 deg tp 2458470.578078949674 (2018-Dec-18.07807895) 4.4941e-05 TDB period 1225.749489052529 3.36 5.0228e-06 1.375e-08 d yr n .2936978585063659 1.2035e-09 deg/d Q 2.611577977197059 7.1343e-09 au   Orbit Determination Parameters    # obs. used (total)      2812      data-arc span      32702 days (89.53 yr)      first obs. used      1931-05-06      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45185      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:03:57   Additional Information  Earth MOID = .85593 au   Jupiter MOID = 2.50211 au   T_jup = 3.613  [ 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 12.3   n/a MPO347534   diameter diameter 7.865 km 0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 2.7294 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Liu, J. (2015) Minor Planet Bull. 42, 247.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Tan, H.; Yeh, T.; Li, B.; Gao, X. (2018) Minor Planet Bull. 45, 57-59.] [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Benishek, V.; Pravec, P.; Durkee, R.; Husarik, M.; et al. (2019) CBET 4689.] geometric albedo albedo 0.496   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   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) 2019 van Albada (1935 SX1)          Discovered 1935-Sep-28 by Van Gent, H. at Johannesburg (LS) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1906-Aug-23 06:27 < 00:01 David 0.0227194242054697 0.0227179066726034 0.0227209433986493 7.18030745804883 7.18030736544208 2417445.768941190 0.792691633053418 331.230897625967 23.7488980360503 77.4349129572375 139658.851974928 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 02:04:05 2020-Dec-18 02:04 2051-Mar-07 06:14 < 00:01 Eunom 0.0443360330470818 0.0443352966535018 0.0443367694411947 5.82589978052833 5.82589972618152 2470237.760057058 0.254404591310018 160.903242893661 36.6595043233684 -89.3467359280406 180821.560067827 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 02:04:05 2020-Dec-18 02:04 2188-Oct-03 21:06 < 00:01 Eunom 0.0221952404005925 0.0221910600453302 0.0221994269887049 5.84390117356219 5.8439010653363 2520487.379202435 0.552716887868946 630.89356904071 36.5122958676866 70.9757870078336 85943.4364387005 T 39 CATAB v2.0f-lin.ifort 2020-Dec-18 02:04:05 2020-Dec-18 02:04 Alternate Designations  1935 SX1 = 1931 JN = 1941 HS = 1964 DG = 1971 HB = 1975 ND = 1975 PL = A911 KD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-25 09:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin