+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21956 Thangada (1999 VE179) Classification: Main-belt Asteroid          SPK-ID: 2021956 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09826917949859423 5.0927e-08   a 2.775175110403177 1.4028e-08 au q 2.502460929338936 1.359e-07 au i 9.903933260660935 4.419e-06 deg node 148.4196388512074 2.8252e-05 deg peri 22.73169292601816 3.5656e-05 deg M 91.72179096872728 2.1703e-05 deg tp 2458770.266681819684 (2019-Oct-13.76668182) 0.00010109 TDB period 1688.628110169827 4.62 1.2804e-05 3.506e-08 d yr n .2131908132003053 1.6165e-09 deg/d Q 3.047889291467418 1.5407e-08 au   Orbit Determination Parameters    # obs. used (total)      1382      data-arc span      23867 days (65.34 yr)      first obs. used      1955-04-14      last obs. used      2020-08-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51458      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:13:34   Additional Information  Earth MOID = 1.51201 au   Jupiter MOID = 1.92953 au   T_jup = 3.307  [ 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 14.15   n/a E2021B10   diameter diameter 4.233 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.188   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21956 Thangada           Discovered 1999 Nov. 6 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Neela Devi Thangada (b. 1990) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany & zoology project. She attends the Keystone Junior High School, San Antonio, Texas. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20051019/MPCPages.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 VE179 = 1987 DC3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-10 12:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin