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22442 Blaha (1996 TM9)
Classification: Main-belt Asteroid          SPK-ID: 2022442
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02763804709178848 3.6908e-08  
a 2.190941311248326 6.8973e-09 au
q 2.1303879721127 8.1583e-08 au
i .8776029340664154 4.0091e-06 deg
node .1923023220836725 0.00024469 deg
peri 355.9136663156448 0.0002544 deg
M 190.7740934050207 7.0093e-05 deg
tp 2459757.312391854898
(2022-Jun-26.81239185)
0.0002308 TDB
period 1184.52585127832
3.24
5.5935e-06
1.531e-08
d
yr
n .3039190741269971 1.4352e-09 deg/d
Q 2.251494650383953 7.0879e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1267  
   data-arc span      8897 days (24.36 yr)  
   first obs. used      1996-10-14  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:24  

Additional Information
 Earth MOID = 1.12248 au 
 Jupiter MOID = 2.82136 au 
 T_jup = 3.672 
[ 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 15.73   n/a E2021B10  
diameter diameter 1.982 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.38 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.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.259   0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22442 Blaha           Discovered 1996 Oct. 14 by J. Ticha and M. Tichy at Klet.
John Elmer Blaha (b. 1942), is a U.S. astronaut who made five space missions from 1989 to 1997. Four of them were space-shuttle missions. For the fifth he spent four months aboard the MIR space station.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

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