AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ Sirene ∴ Observational info
Contact »
(1009) Sirene  ▹ 
OBSERVATIONAL INFORMATION
◲
Arc information
Arc length 36390.5 days
Unobserved 311 days

 

Astrometry summary
Optical
RMS of residuals 0.97
First observation 1923-10-31.840
Last observation 2023-06-19.307
Number (Discarded) 7421 (464)

 

Get the observational details
ASCII file

 

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