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22003 Startek (1999 XO42)
Classification: Main-belt Asteroid          SPK-ID: 2022003
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05646075600072487 3.8365e-08  
a 2.93504965955997 1.3124e-08 au
q 2.769334536881543 1.1515e-07 au
i 1.459993457058901 3.6313e-06 deg
node 7.393141226274298 0.00014084 deg
peri 133.7593388592039 0.00014495 deg
M 347.2166949232375 3.2109e-05 deg
tp 2459265.717216686814
(2021-Feb-20.21721669)
0.00016378 TDB
period 1836.629718704881
5.03
1.2318e-05
3.372e-08
d
yr
n .1960112026575819 1.3147e-09 deg/d
Q 3.100764782238396 1.3865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1715  
   data-arc span      10074 days (27.58 yr)  
   first obs. used      1993-08-15  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51618  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:57:28  

Additional Information
 Earth MOID = 1.78214 au 
 Jupiter MOID = 1.89424 au 
 T_jup = 3.272 
[ 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 14.32   n/a E2021B10  
diameter diameter 3.916 km 0.988 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.264   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22003 Startek           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Jennifer Startek mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. She teaches at the Southwestern Educational Society, Mayaguez, Puerto Rico.
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

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Alternate Designations
 1999 XO42 = 1996 DM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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