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Special Notice #49: Possible Nova in Nor [V390 Nor]

June 17, 2007

Bill Liller has informed us of a possible nova in Norma [V390 Nor], with the approximate coordinates of

RA 16:32.2 DEC -45:08 J2000

with approximate magnitude of 9.4 and outburst date around June 15.086UT.

Michael Linnolt confirmed this new object visually, with approximate location of

16:32:12 -45:08:40 J2000

and an approximate magnitude of V=10.2 on June 17 at 0811UT.

Special Notice #48: Update on V5558 Sgr [Nova Sgr 2007]

June 8, 2007

V5558 Sgr, a nova that went into outburst in April (see Special Notices 44 and 45), continues to increase in brightness. The last reports indicate that this nova has reached V=8.6, brightening by about 0.02mag per day. We have produced a new sequence, based on recent calibration from Sonoita Research Observatory along with nearby Tycho2 and GCPD stars. You can download this sequence as part of the VSP chart:

Special Notice #45: 1804-18 V5558 Sgr = Nova Sgr 2007

April 24, 2007

Coordinates: R.A. = 18h 10m 18.27s Decl. = -18o 46' 52.1" (2000.0)

Further to AAVSO Special Notice #44, 1804-18 Nova Sgr 2007 has been given the name V5558 Sgr by N. N. Samus, Institute of Astronomy, Russian Academy of Sciences, according to IAU Circular 8832 (Daniel W. E. Green, ed.).

Special Notice #44: Possible Nova in Sagittarius [V5558 Sgr]

April 20, 2007

CBET 931 (Gareth V. Williams, ed.) announces the discovery of a possible nova [V5558 Sgr] in Sagittarius by Yukio Sakurai, Mito, Ibaraki-ken, Japan, at magnitude 10.3 on two 20-s CCD exposures taken on Apr. 14.777 UT. Neither the USNO catalogue nor the Digitized Sky Survey indicates any precursor at the position of the new object.

K. Itagaki, Yamagata, Japan, provides the following position measured from his unfiltered CCD image that showed N Sgr 07 at magnitude 9.8 on Apr. 19.745 UT:

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: [http://www.aavso.org/observing/charts/vsp/]

2016 link: https://www.aavso.org/vsp

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

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SUBMIT OBSERVATIONS TO THE AAVSO

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

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