+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1598 Paloque (1950 CA) Classification: Main-belt Asteroid          SPK-ID: 2001598 [ 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 .08103430134758398 3.1788e-08   a 2.33180805392391 6.3357e-09 au q 2.142851617397517 7.3137e-08 au i 7.53762957327008 4.0312e-06 deg node 298.0277034548997 3.0525e-05 deg peri 300.6808436330605 4.3206e-05 deg M 164.1270007796961 3.2165e-05 deg tp 2458407.553982531345 (2018-Oct-16.05398253) 0.0001158 TDB period 1300.581654905392 3.56 5.3006e-06 1.451e-08 d yr n .2767992295156488 1.1281e-09 deg/d Q 2.520764490450304 6.8491e-09 au   Orbit Determination Parameters    # obs. used (total)      2610      data-arc span      25840 days (70.75 yr)      first obs. used      1950-02-11      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41044      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:01:36   Additional Information  Earth MOID = 1.14098 au   Jupiter MOID = 2.52545 au   T_jup = 3.554  [ 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 12.8   n/a MPO395006   diameter diameter 9.660 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 5.949 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Ditteon, R.; West, J. (2011) Minor Planet Bull. 38, 214-217.] [Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm] geometric albedo albedo 0.244   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1598 Paloque (1950 CA)          Discovered 1950-Feb-11 by Boyer, L. at Algiers Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1950 CA = 1962 RB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 10:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin