+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   135978 Agueros (2002 TD304) Classification: Main-belt Asteroid          SPK-ID: 2135978 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1586456240095283 3.3553e-08   a 2.734505123843008 1.2596e-08 au q 2.300687852113682 9.269e-08 au i 7.903937406734114 4.7437e-06 deg node 53.10913433504447 2.817e-05 deg peri 262.4066985395495 3.2873e-05 deg M 52.97531723820693 1.516e-05 deg tp 2458957.454488835261 (2020-Apr-17.95448884) 6.95e-05 TDB period 1651.644361578298 4.52 1.1412e-05 3.124e-08 d yr n .2179645984175352 1.5061e-09 deg/d Q 3.168322395572335 1.4595e-08 au   Orbit Determination Parameters    # obs. used (total)      588      data-arc span      9926 days (27.18 yr)      first obs. used      1993-10-09      last obs. used      2020-12-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51399      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 10:03:55   Additional Information  Earth MOID = 1.30168 au   Jupiter MOID = 2.1553 au   T_jup = 3.321  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.76   n/a E2021B55   135978 Agüeros           Discovered 2002 Oct. 4 by the Sloan Digital Sky Survey at Apache Point. Marcel Agüeros (b. 1973) is a French-Puerto Rican astronomer and a contributor to the Sloan Digital Sky Survey. Marcel has worked on a variety of problems in stellar astrophysics, including searching for isolated neutron stars and examining the age-rotation-activity relation in open clusters. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20120406/MPCPages.arc Last Updated: 2012-04-09 Alternate Designations  2002 TD304 = 1993 TT48 = 2001 KO64  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 19:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin