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AAVSO Special Notice

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!

Special Notice #32: Possible Nova in Centaurus [V1065 Cen]

January 24, 2007

William Liller, Vina del Mar, Chile, reports his discovery of a possible nova; confirmation and spectra are needed. According to Bill, "its approximate magnitude is 8.2. It appears on two photos taken near Jan 23.354 UT with Kodak TP film, an orange filter and an 85mm lens. Nothing brighter than magnitude 11.5 was seen at this position on Jan 15.36. Nothing seen at this position on the Real Sky Digitized Southern Sky Survey."

Coordinates (from Liller): R.A. = 11h 43.2m Dec. = -58d 03' (2000)

Special Notice #31: Corrected text of AAVSO Special Notice #29 - Observations requested of 2001+32 V550 Cyg

January 19, 2007

In AAVSO Special Notice #29, the wrong satellite was named as the source of observations being analyzed by Dr. Jeno Sokoloski. A correction published in Special Notice #30 was ambiguous. To clarify matters, below is the corrected full text of the AAVSO Special Notice #29. Please disregard Special Notice #30. We apologize for the error and confusion! -- Elizabeth Waagen

Special Notice #30: Correction to AAVSO Special Notice #29

January 18, 2007

In AAVSO Special Notice #29, I said that Dr. Jeno Sokoloski was requesting our observing assistance on V550 Cyg in order to correlate her observations taken by ROSAT in the last few days. Since ROSAT ceased operating in 1999, I clearly mis-spoke! However, Dr. Sokoloski is using archival ROSAT data in her research on this star in addition to her recently-obtained observations. My apologies to Dr. Sokoloski for the error.

Elizabeth O. Waagen


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