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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1998HD38 ∴ Observational info
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(129633) 1998HD38  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11750 days
Unobserved 146 days

 

Astrometry summary
Optical
RMS of residuals 0.51
First observation 1991-10-05.119
Last observation 2023-12-06.170
Number (Discarded) 893 (3)

 

Get the observational details
ASCII file

 

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