Skip to main content

Alert Notice 380: Nova in Ophiuchus

We recently released a significant update to the backend systems for the AAVSO website. While most of the bugs introduced by this update have been fixed, there may still be problems we haven't fixed. If you run into a problem, please email webmaster@aavso.org

May 27, 2008

Event: Nova in Ophiuchus

Discovered By: independently by several Japanese observers using unfiltered CCDs:
        -- K. Nishiyama, Kurume, Fukuoka-ken, and F. Kabashima, Miyaki-cho, Saga-ken
        -- H. Nishimura, Kakegawa, Shizuoka-ken
        -- K. Haseda, Toyohashi, Aichi; via H. Yamaoka, Kyushu University

Discovery Date: 2008 May 25 (JD 2454612)

Discovery Magnitude: approximately 10.2 (visual estimate)

Position: R.A. = 17h 39m 50.93s ; Decl. = -23o 50' 00.9" (J2000)
        by K. Nishiyama and F. Kabashima

Charts: Finder charts for this object may be plotted by entering the coordinates above into VSP: http://www.aavso.org/vsp

There are a few existing comparison stars to the southeast of the variable on a C-scale chart; more comparison stars will be added as soon as a sequence has become available.

Notes:

Multiple confirmations were reported after the object was posted on the CBAT unconfirmed objects webpage.  Observations of the field prior to the current outburst indicated no object visible at those coordinates, the faintest of which (UK Schmidt Telescope red plates, checked by E. Guido and G. Sostero, Remanzacco, Italy) showed no object down to 20th magnitude on 1991 August 11.

Several observations published in IAU Circular 8947 suggest the nova has remained relatively constant at its discovery magnitude, remaining around m(vis) ~ 10.2.

Spectra for this object have not been published so the nova type is not yet known.

All discovery information in this Alert Notice is from IAU Circular 8947, Daniel W.E. Green, editor.  For full details on the discovery and subsequent observations, please see the circular.

Please submit data to the AAVSO using the name "N OPH 2008", or the alias "Nova Oph 2008", or "VSX J173950.9-235000".  This object has been assigned the AAVSO Unique ID of "000-BFT-356".

Congratulations to the discoverers!

Good observing,

Matthew Templeton & Elizabeth Waagen, AAVSO

---------------------------------------------------‬

SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at‭:‬
http‭://‬www.aavso.org/webobs

ALERT NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

An Alert Notice archive is available at the following URL‭:‬
http‭://‬www.aavso.org/alert-notice-archive

Subscribing and Unsubscribing may be done at the following URL‭:‬
http‭://‬www.aavso.org/observation-notification#alertnotices


Please support the AAVSO and its mission -- join or donate today:
http://www.aavso.org/apps/donate

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484