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17196 Mastrodemos (1999 XW234)
Classification: Main-belt Asteroid          SPK-ID: 2017196
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07964268641349559 4.229e-08  
a 2.774308904522354 1.1765e-08 au
q 2.553355490425312 1.1551e-07 au
i 7.529746870277521 4.6464e-06 deg
node 198.0822766427433 2.5911e-05 deg
peri 358.0076318806934 3.5434e-05 deg
M 34.85969768001615 2.2871e-05 deg
tp 2458837.062479058439
(2019-Dec-19.56247906)
0.00010724 TDB
period 1687.837573321568
4.62
1.0736e-05
2.939e-08
d
yr
n .2132906659327062 1.3568e-09 deg/d
Q 2.995262318619396 1.2702e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1431  
   data-arc span      10299 days (28.20 yr)  
   first obs. used      1992-04-05  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49053  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:07:30  

Additional Information
 Earth MOID = 1.55172 au 
 Jupiter MOID = 1.96245 au 
 T_jup = 3.319 
[ 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 14.1   n/a MPO467888  
diameter diameter 7.072 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.271384 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.107   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17196 Mastrodemos           Discovered 1999 Dec. 3 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Nickolaos Mastrodemos (b. 1964), a member of the navigation group at the Jet Propulsion Laboratory, was a key figure in the development of autonavigation on the Deep Impact mission, as well as on earlier missions to comets. He developed the targeting algorithms and carried out the testing via numerous simulations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

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Alternate Designations
 1999 XW234 = 1998 RX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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