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AstDyS ∴ Objects ∴ Helena ∴ Observational info
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(101) Helena  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 53904.6 days
Unobserved 57 days

 

Astrometry summary
Optical
RMS of residuals 0.54"
First observation 1871-03-22.990
Last observation 2018-10-22.602
Number (Discarded) 1703 (88)

 

Get the observational details
ASCII file

 

Note: The ASCII file is in a format suitable for OrbFit input.





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