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AAVSO International Database

Special Notice #42: Outburst of GW Lib

April 12, 2007

Rod Stubbings reports via Daisaku Nogami/VSNET that the cataclysmic variable GW Lib is currently in outburst, at a visual magnitude of 13.8. Follow-up observations are urgently requested. The object is located at

RA: 15h 19m 55.4s, Dec: -25d 00m 25s (J2000)

An AAVSO chart is available at the following URL:]

2016 link:


Special Notice #41: Chart Available for N Oph 07 [V2615 Oph]

March 23, 2007

You can now retrieve a chart and sequence for the apparent nova in Ophiuchus [V2615 Oph] from:

obsolete link: []

2016 link:

enter N Oph 07 for the object name. When conditions permit, we will obtain an all-sky calibration for this field from Sonoita Research Observatory.

Arne Henden


Special Notice #40: Possible Nova in Oph [V2615 Oph]

March 21, 2007

As reported in CBET 900, Hideo Nishimura (Miyawaki, Kakegawa, Shizuoka-ken) and Yuji Nakamura (Kameyama, Mie, Japan) have discovered a possible new nova [V2615 Oph] around magnitude 10. The position is

17:42:44.00 -23:40:35.1 J2000

Naito and Narusawa at Nishi-Harima Astronomical Observatory obtained a low-resolution spectrogram that indicates this is an Fe-II type nova, with typical P-Cyg line profiles.

You can draw a chart of the region using the coordinates above and VSP:

Special Notice #39: V2467 Cyg [Nova Cyg 2007] [Correction]

March 19, 2007

This is a correction to Special Notice #38. I can't type.

Special Notice #37 announced the discovery of a possible nova [Nova Cyg 2007] in Cygnus by A. Tago (CBET 890). The coordinates are:

RA 20:28:12.52 DEC +41:48:36.5 J2000

Special Notice #38: V2467 Cyg [Nova Cyg 2007]

March 19, 2007

Special Notice #37 announced the discovery of a possible nova in Cygnus by A. Tago (CBET 890). The coordinates are:

RA 20:28:12.52 DEC +41:48:36.5 J2000

Special Notice #37: Possible Nova in Cygnus [V2467 Cyg]

March 16, 2007

A. Tago reports (CBET 890) the discovery of a possible nova [V2467 Cyg] from CCD exposures taken on March 15. The position, from Bisei Spaceguard Center images, is

RA 20:28:12.52 DEC +41:48:36.5 J2000

The brightness is about V=6.7, and the region has considerable nebulosity. We will be posting a VSP finding chart for this object in the next day or so; until then, estimate the brightness relative to nearby Tycho stars. Submit your observations as 9999+99 Nova Cyg 2007

Arne Henden

Special Notice #36: Variable Star in Triangulum Australe (1612-60 VAR TRA 07)

March 8, 2007

A variable star has been discoved in TrA, according to the Central Bureau for Astronomical Telegrams (CBET No. 867, Daniel W. E. Green, ed.):

"C. Jacques, Belo Horizonte, Brazil, reports that C. Colesanti, E. Pimentel, T. Napoleao, and he have found a previously unknown variable star on CCD images obtained in the course of the Brazilian Supernovae Survey (cf. IAUC 8482). The new object is located at

R.A. = 16h20m50s.18, Decl. = -60d23'39".5 (equinox 2000.0).

Special Notice #35: Eclipse of HD74057

February 24, 2007

Don Davies discovered a 7th magnitude eclipsing binary (GSC 02484-00592, HD74057, VSX J084246.2+315145) in May, 2005, announced on our discussion group (posting 5/27/2005), and subsequently published in Peremennye Zvezdy:

The coordinates are
08:42:45.900 +31:51:41.00 J2000
and the approximate magnitude is V=7.18, with (B-V) = 0.56

Special Notice #34: Another Nova in Sco - Nova Sco 2007 #2 [V1281 Sco]

February 21, 2007

IAU Circular No. 8810 (Daniel W. E. Green, ed.) announces the discovery of a possible nova in Scorpius; this object [V1281 Sco] is not to be confused with 1651-32 V1280 Sco (N Sco 2007, see AAVSO Alert Notice 346).

Coordinates provided by K. Itagaki, Yamagata, Japan:
R.A.= 16h 56m 59.35s, Decl. = -35o 21' 50.2" (2000.0)

Independent discoveries by:
- Yuji Nakamura, Kameyama, Mie, Japan, (via H. Yamaoka, Kyushu University)
<12.0 CCD, Feb. 14.8575 UT
9.3 CCD, Feb. 19.8593

Special Notice #33: V1280 Scorpii = Nova Scorpii 2007

February 7, 2007

IAUC 8803 announces a new nova in Scorpius, independently discovered by Y. Nakamura and Y. Sakurai. The position is

16:57:40.91 -32:20:36.4 J2000

and the unfiltered magnitude is about 8.3 (T. Krajci, 2007-02-06).

Spectra indicate blue color, no emission blueward of 540nm, but Halpha emission with P-Cyg profile.

Report observations to the AAVSO as: 9999+99 V1280 Sco. Please be sure to indicate what you used for comparison stars.

Thank you for your astronomical efforts and contributions!


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