+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09813594395495995 5.004e-08   a 2.777839185067694 1.4039e-08 au q 2.505233314485999 1.3353e-07 au i 9.907634224268097 4.3641e-06 deg node 148.4054174459284 2.7585e-05 deg peri 23.35675047589769 3.4868e-05 deg M 132.8192417231282 2.1357e-05 deg tp 2458772.596283802452 (2019-Oct-16.09628380) 9.9289e-05 TDB period 1691.060232818707 4.63 1.282e-05 3.51e-08 d yr n .212884197152423 1.6139e-09 deg/d Q 3.050445055649389 1.5417e-08 au   Orbit Determination Parameters    # obs. used (total)      1436      data-arc span      24191 days (66.23 yr)      first obs. used      1955-04-14      last obs. used      2021-07-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51493      source      ORB      producer      Otto Matic      solution date      2021-Jul-09 10:14:40   Additional Information  Earth MOID = 1.51593 au   Jupiter MOID = 1.92618 au   T_jup = 3.306  [ 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 14.16   n/a MPCxxxxx   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-Jul-31 07:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin