+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06884161820192536 4.1892e-08   a 2.220965642803702 7.2226e-09 au q 2.068070773982216 9.6306e-08 au i 4.064070249013475 4.7869e-06 deg node 9.338546601247693 5.2856e-05 deg peri 80.61439285638559 6.4042e-05 deg M 12.77885136420765 3.5023e-05 deg tp 2458957.585850951178 (2020-Apr-18.08585095) 0.00011762 TDB period 1208.957927223981 3.31 5.8973e-06 1.615e-08 d yr n .2977771119187208 1.4526e-09 deg/d Q 2.373860511625188 7.7198e-09 au   Orbit Determination Parameters    # obs. used (total)      1307      data-arc span      10833 days (29.66 yr)      first obs. used      1991-03-09      last obs. used      2020-11-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55441      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:47:21   Additional Information  Earth MOID = 1.08911 au   Jupiter MOID = 2.72537 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 15.2   n/a MPO502260   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-Jan-15 19:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin