[vsnet-chat 332] astrometry of the companion to V1830 Sgr

[Taichi Kato <tkato>]

   I have obtained the following astrometric position of the north companion
to V1830 Sgr.

        (J2000.0)
   181350.62 -274213.2

   The astrometric solution was made using 37 GSC stars, after rejecting
stars with residuals exceeding 1 arcsec.  The new position has an O-C of
(-0".3, -0".3) to the value of GSC.  This field is rich in stars with large
residuals (sometimes 2 or 3 arcsec), probably resulting from crowding,
but the companion of V1830 Sgr seems to have escaped from this difficulty.

Regards,
Taichi Kato

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp