+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2603 Taylor (1982 BW1) Classification: Main-belt Asteroid          SPK-ID: 2002603 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04454385932167359 2.06e-08   a 2.781259681013653 1.0363e-08 au q 2.657371641045537 6.0742e-08 au i 3.049438042465951 5.6667e-07 deg node 37.75033319483302 1.2889e-05 deg peri 281.0624210973266 1.6747e-05 deg M 323.5822979506312 1.3073e-05 deg tp 2459371.884197220417 (2021-Jun-06.38419722) 6.1379e-05 TDB period 1694.184628006192 4.64 9.469e-06 2.592e-08 d yr n .2124915986421548 1.1876e-09 deg/d Q 2.905147720981768 1.0825e-08 au   Orbit Determination Parameters    # obs. used (total)      2891      data-arc span      30857 days (84.48 yr)      first obs. used      1936-03-23      last obs. used      2020-09-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45618      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:00:30   Additional Information  Earth MOID = 1.64429 au   Jupiter MOID = 2.22251 au   T_jup = 3.330  [ 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 12.53   n/a E2021B10   diameter diameter 18.069 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 3.905 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Odden, C.E.; Cohen, A.J.; Davis, S.; Eldracher, E.A.; et al. (2018) Minor Planet Bull. 45, 278-279.] geometric albedo albedo 0.065   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2603 Taylor (1982 BW1)          Discovered 1982-Jan-30 by Bowell, E. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1982 BW1 = 1927 HC = 1936 FS = 1952 UX = 1970 QU = 1978 GD2 = 1978 JT2 = 1980 XS  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-08 20:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin