+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19864 (2775 P-L) Classification: Main-belt Asteroid          SPK-ID: 2019864 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .198242004974276 3.6987e-08   a 2.372001136061151 1.1267e-08 au q 1.901770875047128 8.7785e-08 au i 3.057086446947414 5.1775e-06 deg node 61.95239735061943 8.8354e-05 deg peri 218.8772577394063 8.9637e-05 deg M 188.0551466864976 1.7634e-05 deg tp 2459637.819851265108 (2022-Feb-27.31985127) 6.7596e-05 TDB period 1334.353090738435 3.65 9.5069e-06 2.603e-08 d yr n .2697936569403642 1.9222e-09 deg/d Q 2.842231397075174 1.35e-08 au   Orbit Determination Parameters    # obs. used (total)      836      data-arc span      21652 days (59.28 yr)      first obs. used      1960-09-24      last obs. used      2020-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55837      source      ORB      producer      Otto Matic      solution date      2020-Jan-29 01:12:01   Additional Information  Earth MOID = .886514 au   Jupiter MOID = 2.30069 au   T_jup = 3.515  [ 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 15.4   n/a MPO302187   diameter diameter 2.086 km 0.347 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.338   0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19864 (2775 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2775 P-L = 2000 SW241  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-05 05:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin