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JPL Small-Body Database Browser
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21952 Terry (1999 VD165)
Classification: Main-belt Asteroid          SPK-ID: 2021952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630812963822758 2.8256e-08  
a 2.472979410828978 9.1597e-09 au
q 2.069682722584312 7.0731e-08 au
i 2.771267096829602 4.402e-06 deg
node 322.0356702107265 8.0013e-05 deg
peri 294.566577851429 8.1585e-05 deg
M 247.9719415666194 1.7492e-05 deg
tp 2459442.531771898098
(2021-Aug-16.03177190)
6.9937e-05 TDB
period 1420.460553442026
3.89
7.8919e-06
2.161e-08
d
yr
n .2534389280488336 1.4081e-09 deg/d
Q 2.876276099073645 1.0653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      12294 days (33.66 yr)  
   first obs. used      1986-05-08  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50591  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:39:50  

Additional Information
 Earth MOID = 1.05659 au 
 Jupiter MOID = 2.18747 au 
 T_jup = 3.463 
[ 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 14.0   n/a MPO309326  
diameter diameter 3.503 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.396   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21952 Terry           Discovered 1999 Nov. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Bailey Holly Terry (b. 1991) 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 Newcastle Middle School, New Castle, Wyoming.
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 VD165 = 1986 JF1 = 1998 MC28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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