+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16671 Tago (1994 AF3) Classification: Main-belt Asteroid          SPK-ID: 2016671 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1931767481516238 2.2186e-08   a 3.046095653057178 1.3293e-08 au q 2.457660800240796 7.033e-08 au i 11.53369096303201 4.34e-07 deg node 284.1513917014964 5.5851e-06 deg peri 157.4926381862502 9.6116e-06 deg M 48.36088301335355 5.629e-06 deg tp 2458939.641223266427 (2020-Mar-31.14122327) 2.9195e-05 TDB period 1941.841293471743 5.32 1.2711e-05 3.48e-08 d yr n .1853910518899152 1.2135e-09 deg/d Q 3.63453050587356 1.5861e-08 au   Orbit Determination Parameters    # obs. used (total)      2178      data-arc span      12620 days (34.55 yr)      first obs. used      1986-08-26      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4136      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:38:20   Additional Information  Earth MOID = 1.47773 au   Jupiter MOID = 1.61625 au   T_jup = 3.179  [ 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 12.9   n/a MPO502297   diameter diameter 19.624 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.053   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16671 Tago           Discovered 1994 Jan. 13 by K. Endate and K. Watanabe at Kitami. Akira Tago (b. 1926) has been the honorary president at Tokyo Future University since 2008 and is an authority in educational psychology. He has educated many students in educational psychology and he actively contributes to the popularization of psychology through the media. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2016-03-23 Last Updated: 2016-03-24 [ show close-approach data ] Alternate Designations  1994 AF3 = 1989 EF9 = 1998 XK38  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin