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20696 Torresduarte (1999 VJ95)
Classification: Main-belt Asteroid          SPK-ID: 2020696
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090104231431359 3.8027e-08  
a 3.158834925867191 1.885e-08 au
q 2.814488993959092 1.2101e-07 au
i 1.003846149262224 4.2172e-06 deg
node 170.1203760597623 0.00022819 deg
peri 357.240419483736 0.00022901 deg
M 145.3563081604738 1.8441e-05 deg
tp 2458372.519312901259
(2018-Sep-11.01931290)
0.00010518 TDB
period 2050.637162760583
5.61
1.8355e-05
5.025e-08
d
yr
n .1755551915948725 1.5714e-09 deg/d
Q 3.50318085777529 2.0905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1326  
   data-arc span      11169 days (30.58 yr)  
   first obs. used      1989-12-30  
   last obs. used      2020-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:27:22  

Additional Information
 Earth MOID = 1.82091 au 
 Jupiter MOID = 1.46752 au 
 T_jup = 3.196 
[ 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 14.23   n/a E2021B10  
diameter diameter 6.666 km 2.768 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.83 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.083   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20696 Torresduarte           Discovered 1999 Nov. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Luis Eduardo Torres Duarte (b. 1984) was awarded second place in the 2004 Intel International Science and Engineering Fair for his computer science team project. He attends the C.B.T.i.s. No. 168, Aguascalientes, Mexico.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

[ show close-approach data ]
Alternate Designations
 1999 VJ95 = 1989 YB1 = 1993 RE17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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