IAU Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PNV J17522579-2126215

PNV J17522579-2126215   2012 06 26.5494*  17 52 25.79 -21 26 21.5  10.3 U             Sgr       I 0

2012 06 26.565

Discovered on June 26.5494 UT by K. Itagaki, Yamagata, Japan, using 0.21-m refl. + unfiltered CCD. He confirmed it on June 26.565 UT using 0.60-m refl. + unfiltered CCD, when the object was mag about 10.2. The object was below mag about 16.0 on June 25.666 UT (0.21-m refl.).

2012 06 26.640

unfiltered mag about 10.0 (Itagaki), slightly brightened.

2012 06 26.565

Adding onto discovery comment. See an image at http://www.k-itagaki.jp/images/pnv.jpg.

2012 06 26.540

Mag.= 9.9, independent discovery by Y. Sakurai, Mito, Japan, on four frames using Fuji Digital Camera + Nikon 180-mm f/2.8 lens. Sakurai writes this star is not visible on four frames taken on 2012 June 25.602 UT (No limiting magnitude reported).

2012 06 27.25273

Photometric results were B=11.2, V=9.7, Rc=8.7, Ic=7.7, position end figures 25s.77, 21".5 (USNO-B1.0), remotely using 0.25-m f/3.4 hyperbolic astrograph + CCD (SBIG ST-10XME) at the RAS Observatory, iTelescope network, near Mayhill, NM, U.S.A. Position and magnitude were measured on an image composed from 3-frames which were taken by each 30-seconds exposure under the limiting magnitude = 15.7. Observer T. Yusa, Osaki, Japan.

2012 06 27.3552

I did multi-color photometry of this nova candidate. B=11.36, V=9.80, Rc=8.82, Ic=7.65. Position end figures are R.A. 25.69 and Dec. 21.81. Instrument for photometry is 25cm reflector+SBIG ST-10XME CCD at Mayhill, NM, USA (T4, iTelescope.NET). Inst. for astrometry is 43cmRC (fl=1930mm)+FLI-PL6303E CCD camera (T21, iTtelescope.NET). My image is available at http://meineko.sakura.ne.jp/ccd/PNV_J17522579-2126215-120627.jpg. Seiichiro Kiyota (Tsukuba, Japan)

2012 06 27.3115

We performed some follow-up of this object remotely through the 0.10-m f/5 reflector + CCD of ITelescope network (MPC Code - H06). On our images taken on June 27.3, 2012 we can confirm the presence of an optical counterpart with R-filtered CCD magnitude 8.9 at coordinates: R.A. = 17 52 25.79, Decl.= -21 26 21.6 (equinox 2000.0; CMC-14 catalogue reference stars). An animation showing a comparison between our confirmation image andthe archive POSS2/UKSTU plate (R Filter - 1996): http://bit.ly/M3mhZn - Our annotated confirmation image: http://bit.ly/OrjMA9 by Ernesto Guido, Giovanni Sostero & Nick Howes

2012 06 26.919

Observations with 120 mm, f/4 lens + CCD + R filter using twin 30 second exposures at Crni Vrh Observatory: 2012 Jun. 26.919UT, 9.7 (object close to field margin); Jun. 24.050UT, [12.0; Jun. 22.988UT, [12.0; Jun. 21.985UT, [12.0. Image ob the nova candidate near the bottom margin http://www.observatorij.org/vstars/PNVJ17522579-2126215.jpg H. Mikuz

2012 06 27.533

unfiltered mag about mag9.6 K.Itagaki.

2012 06 27.1921

We made 4 images of 30 seconds each with (C,B,V,R) at RAS Observatory, near MayHill New Mexico. Confirmation image: http://ceamig-rea.net/tocp/PNV_J17522579-2126215.jpg C. Jacques and E. Pimentel

2012 06 27.25273

Multi colored image: http://space.geocities.jp/yusastar77/supernova/PSNinSgr_120627.htm V:90, B:90, R:90, each seconds exposure. 0.25-m f/3.4 hyperbolic astrograph + CCD (SBIG ST-10XME) at the RAS Observatory, Mayhill, NM, U.S.A. T. Yusa, Osaki, Japan.

2012 06 28.480

Unfiltered mag about 10.1 K.Itagaki.

2012 06 28.602

K. Ayani, Bisei Astronomical Observatory, reports that M. Fujii (Kurashiki, Okayama, Japan) obtained a low-resolution spectrogram (R ~ 500, range: 400-950 nm) of this possible nova with 40-cm telescope of Fujii Kurosaki Observatory. Fujii notes that the spectrum shows broad and prominent Balmer lines (H-alpha FWHM: 4100 km/s), and broad lines of Fe II (multiplet 37, 42, 74), Na I D, He I (706.5 nm), O I (747.7, 777.3, 844.6 nm), Mg II (789.0, 823.2, 922.6 nm), Ca II (849.8 nm), N I (905.0 nm), and that the spectrum resembles that of Nova Sgr 2012 No.1. His spectrum is posted at website URL: http://otobs.org/FBO/novae/pnv_j17522579-2126215.htm.

2012 06 29.471

Unfiltered mag about 10.6, K.Itagaki.

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