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21928 Prabakaran (1999 VX55)
Classification: Main-belt Asteroid          SPK-ID: 2021928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06748989688806611 4.0038e-08  
a 2.730499340689782 1.2386e-08 au
q 2.546218221733695 1.0914e-07 au
i 4.076398851958408 4.5067e-06 deg
node 212.9883601352161 4.9458e-05 deg
peri 13.72198982874979 5.7261e-05 deg
M 57.24242120938921 2.7527e-05 deg
tp 2458938.454301485422
(2020-Mar-29.95430149)
0.00012635 TDB
period 1648.016444310962
4.51
1.1214e-05
3.07e-08
d
yr
n .2184444222281511 1.4864e-09 deg/d
Q 2.914780459645868 1.3222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1313  
   data-arc span      8536 days (23.37 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50385  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:54:08  

Additional Information
 Earth MOID = 1.53554 au 
 Jupiter MOID = 2.05985 au 
 T_jup = 3.347 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.64   n/a E2021B10  
diameter diameter 5.907 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.616 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.088   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21928 Prabakaran           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sabrina Lakshmi Prabakaran (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her biochemistry, medicine, health, & microbiology project. She attends the Canterbury School, Fort Myers, Florida.
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

Alternate Designations
 1999 VX55 = 1997 EB50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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