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Alert Notice 557: MASTER OT J010603.18-744715.8 = Nova in SMC (Tucana)

October 17, 2016

Event: Nova in the Small Magellanic Cloud (Tucana)

Discovered by: the MASTER-OAFA auto-detection system (reported by V. Shumkov (Lomonosov Moscow State University) et al. in ATel #9621)

Discovery magnitude: 10.9 unfiltered CCD

Discovery date: 2016 October 14.19341 UT
Coordinates (2000.0):  R.A. 01 06 03.27  Dec. -74 47 15.8  (from VSX)
Spectra: Spectroscopy indicating that MASTER OT J010603.18-744715.8 is a classical nova was obtained 2016 Oct 14.70 UT by S. C. Williams (Lancaster Univ.) and M. J. Darnley (Liverpool John Moores Univ.) (ATel #9628) with the FLOYDS instrument on the 2m Faulkes Telescope South (Siding Spring Observatory, NSW, Australia).

N. P. M. Kuin (Univ. College London-Mullard Space Science Lab.) et al. (ATel #9635) report that 500 seconds of observations by Swift centered on 2016 Oct. 15.3056 UT did not detect X-rays.

Observing recommendations: Observations of all types (visual, CCD, DSLR, spectroscopy) and all bands as instrumentation permits are strongly encouraged as the nova evolves.

Observations reported to the AAVSO:
2016 Aug. 01.21289 UT <18.9 unfiltered CCD (MASTER, reported in ATel #9621);
2016 Oct. 06.15163998, <13 unfiltered (MASTER-OAFA WVF1 database, pre-discovery; reported in ATel #9631 (V. Lipunov (Lomonosov MSU) et al.);
06.15547, target not seen (OGLE; reported in ATel #9622);
09.80836634, 8.5 unfiltered +/- 0.1 (MASTER-SAAO WVF2 database, pre-discovery; reported in ATel #9631);
11.07189524, 8.9 unfiltered +/- 0.2 (MASTER-OAFA WVF1 database, pre-discovery; reported in ATel #9631);
12.16459113, 9.3 unfiltered +/- 0.2 (MASTER-OAFA WVF1 database, pre-discovery; reported in ATel #9631);
14.11706 UT, brighter than 11 I (OGLE, target saturated; reported in ATel #9622);
14.55360, 10.71 V +/-0.04 (S. O'Connor, St. George, Bermuda);
14.55480, 9.59 R +/-0.02 (O'Connor);
14.55600, 9.28 I +/-0.05 (O'Connor);
14.61458, 10.5 (A. Pearce, Nedlands, W. Australia);
14.79514, 10.6 (Pearce);
15.43930, 10.75 B +/-0.04 (O'Connor);
15.44100, 10.87 V +/-0.02 (O'Connor);
15.44260, 9.64 R +/-0.10 (O'Connor);
16.47917, 10.6 (Pearce);
17.42985, 11.3 V (M. Urbanik, Cadca, Slovak Republic);
17.48056, 10.9 (Pearce);
17.53190, 11.09 V +/-0.02 (O'Connor);
17.53330, 9.98 R +/-0.09 (O'Connor);
17.53490, 9.93 I +/-0.07 (O'Connor);

Charts: Charts for MASTER OT J010603.18-744715.8 may be created using the AAVSO Variable Star Plotter (VSP). Be sure to include the spaces in the name as shown.

Submit observations: Please submit observations to the AAVSO International Database using the name MASTER OT J010603.18-744715.8. Be sure to include spaces in name as shown.

a. Most of the information in this Alert Notice is taken from ATel #9621 (, #9622, #9628, #9631, and #9635.

b. P. Mroz and A. Udalski (Warsaw Univ. Obs.; on behalf of the OGLE team) (ATel #9622) report the progenitor was clearly visible in OGLE images at position end figures 03.27s, 15.8", mean magnitude I = 20.84, and mean color (V-I) = 0.16 mag. They also report the progenitor showed semiregular variability on a timescale of 20-30 days.

c. Shumkov at al. (discovery image, 2016 October 14.19341 UT) give position end figures 03.18s, 15.8".

d. MASTER images for discovery (2016 October 14.19341 UT) and reference (2016 August 01.21289 UT) (Shumkov et al. ATel #9621):

Congratulations to the MASTER-OAFA team on this discovery!

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.


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