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(1757) Porvoo  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 30968.3 days
Unobserved 117 days

 

Astrometry summary
Optical
RMS of residuals 0.71
First observation 1939-03-17.970
Last observation 2023-12-30.230
Number (Discarded) 6422 (593)

 

Get the observational details
ASCII file

 

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