+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11892 (1991 FT2) Classification: Main-belt Asteroid          SPK-ID: 2011892 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06886706645021325 3.6561e-08   a 2.220856322911592 6.5518e-09 au q 2.067912462945263 8.3366e-08 au i 4.064292515227966 4.7309e-06 deg node 9.334124393300009 5.0272e-05 deg peri 80.52872972797248 6.1554e-05 deg M 72.41605513906337 3.465e-05 deg tp 2458957.329166395307 (2020-Apr-17.82916640) 0.00011632 TDB period 1208.868667722652 3.31 5.3494e-06 1.465e-08 d yr n .2977990989527359 1.3178e-09 deg/d Q 2.37380018287792 7.003e-09 au   Orbit Determination Parameters    # obs. used (total)      1392      data-arc span      10964 days (30.02 yr)      first obs. used      1991-03-09      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55392      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:01:05   Additional Information  Earth MOID = 1.08864 au   Jupiter MOID = 2.72498 au   T_jup = 3.643  [ 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 15.16   n/a E2021B10   diameter diameter 2.832 km 0.380 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.201   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11892 (1991 FT2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla Reference: 19991026/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1991 FT2 = 1994 AT15  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 20:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin