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JPL Small-Body Database Browser
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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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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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02749305256330495 3.7536e-08  
a 2.191208624745806 6.9965e-09 au
q 2.130965610848502 8.2762e-08 au
i .8775642034256237 4.0501e-06 deg
node .1931010433780286 0.00024966 deg
peri 355.8846197757478 0.00025962 deg
M 130.0313998266717 7.1508e-05 deg
tp 2458572.572933121257
0.00023529 TDB
period 1184.742641252011
n .3038634615358823 1.4553e-09 deg/d
Q 2.251451638643109 7.1888e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      8504 days (23.28 yr)  
   first obs. used      1996-10-14  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:41:52  

Additional Information
 Earth MOID = 1.12486 au 
 Jupiter MOID = 2.82191 au 
 T_jup = 3.672 
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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 15.7   n/a MPO452486  
diameter diameter 1.982 km 0.409 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 4.38 h n/a LCDB (Rev. 2019-August); 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] (  

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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-May-27 03:05 UT
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