+ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08103430268292701 3.2667e-08   a 2.331808054318055 6.5302e-09 au q 2.142851614645959 7.4889e-08 au i 7.537629725576855 4.1701e-06 deg node 298.0277037074964 3.1856e-05 deg peri 300.6808411786175 4.4999e-05 deg M 164.1270026583225 3.2983e-05 deg tp 2458407.553975594043 (2018-Oct-16.05397559) 0.0001189 TDB period 1300.581655235148 3.56 5.4634e-06 1.496e-08 d yr n .2767992294454679 1.1628e-09 deg/d Q 2.520764493990151 7.0594e-09 au   Orbit Determination Parameters    # obs. used (total)      2465      data-arc span      25552 days (69.96 yr)      first obs. used      1950-02-11      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41961      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 15:59:22   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. 2019-August); 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 ] 2020-Jul-02 19:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin