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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 ]

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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.arcLast 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 ]
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