+ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1586456202683638 3.2437e-08   a 2.734505122552191 1.255e-08 au q 2.30068786125788 8.9901e-08 au i 7.903937447508921 4.7306e-06 deg node 53.1091391674879 2.7538e-05 deg peri 262.4066943300904 3.2283e-05 deg M 52.97531711405081 1.5133e-05 deg tp 2458957.454489576971 (2020-Apr-17.95448958) 6.9367e-05 TDB period 1651.644360408815 4.52 1.1371e-05 3.113e-08 d yr n .2179645985718698 1.5006e-09 deg/d Q 3.168322383846501 1.4541e-08 au   Orbit Determination Parameters    # obs. used (total)      600      data-arc span      9926 days (27.18 yr)      first obs. used      1993-10-09      last obs. used      2020-12-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51096      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 18:15:25   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-May-09 15:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin