+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21814 Shanawolff (1999 TQ27) Classification: Main-belt Asteroid          SPK-ID: 2021814 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0746605465297219 1.7444e-08   a 2.248941750354872 5.4297e-09 au q 2.081034530159868 4.0013e-08 au i 3.951951375883509 5.6721e-07 deg node 231.4877487105389 2.5938e-05 deg peri 321.3971751479644 2.393e-05 deg M 310.3836018390469 1.6709e-05 deg tp 2459370.280758927721 (2021-Jun-04.78075893) 5.7202e-05 TDB period 1231.872434909646 3.37 4.4612e-06 1.221e-08 d yr n .2922380514394779 1.0583e-09 deg/d Q 2.416848970549876 5.835e-09 au   Orbit Determination Parameters    # obs. used (total)      2349      data-arc span      11437 days (31.31 yr)      first obs. used      1989-11-21      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46587      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:53:45   Additional Information  Earth MOID = 1.08054 au   Jupiter MOID = 2.54662 au   T_jup = 3.622  [ 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 14.06   n/a E2021B10   diameter diameter 3.917 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.241   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21814 Shanawolff           Discovered 1999 Oct. 3 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Shana Marie Wolff (b. 1989) was awarded first place in the 2005 Intel International Science and Engineering Fair for her microbiology team project. She attends the Cheyenne Central High School, Cheyenne, Wyoming, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050822/MPCPages.arc Last Updated: 2005-08-26 [ show close-approach data ] Alternate Designations  1999 TQ27 = 1989 WC1 = 1992 UD = 1998 MD26  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 12:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin