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Alert Notice 467: Nova Monocerotis 2012 = PNV J06393874+0553520

August 17, 2012: Discovered by: Shigehisa Fujikawa (Kanonji City, Kagawa Prefecture, Japan, reported by Mitsuru Soma, National Astronomical Observatory of Japan)

Discovery Magnitude: magnitude 9.4 C using a 105mm camera lens+CCD

Discovery date: 2012 Aug. 09.8048 UT

Coordinates: 06 39 38.74 +05 53 52.0 (2000.0)

Spectra: Spectra by Stephane Charbonnel (Observatoire de Haute Provence, reported by Christian Buil, Castanet, France) on 2012 Aug. 14.137 UT, James Edlin (Observatoire de Haute Provence) on 2012 Aug. 14.140 UT, and by Kazuyoshi Imamura (Okayama University of Science team) on 2012 Aug. 16.808 UT indicate the object to be a nova; Imamura's data indicate a classical nova evolving toward the nebular phase.

Observations reported to the AAVSO International Database:
2012 Aug. 13.3840 UT, 9.858 V +/-0.025 (A. Oksanen, Muurame, Finland, using Caisey Harlingten site, San Pedro de Atacama, Chile);
13.3875, 10.36 B (Oksanen);
13.3875, 9.83 V (Oksanen);
13.3910, 8.231 R +/-0.051 (Oksanen);
13.4174, 9.893 V +/-0.012 (J. Hambsch, Mol, Belgium);
13.4176, 9.910 V +/-0.012 (Hambsch);
13.4179, 9.890 V +/-0.012 (Hambsch);
13.4181, 8.011 I +/-0.017 (Hambsch);
13.4184, 8.043 I +/-0.018 (Hambsch);
13.4186, 7.989 I +/-0.019 (Hambsch);
14.4174, 9.876 V +/-0.012 (Hambsch);
14.4176, 9.841 V +/-0.012 (Hambsch);
14.4179, 9.858 V +/-0.012 (Hambsch);
14.4181, 8.004 I +/-0.017 (Hambsch);
14.4184, 8.022 I +/-0.017 (Hambsch);
14.4186, 8.017 I +/-0.017 (Hambsch);
15.3959, 8.305 R +/-0.002 (Hambsch);
15.3969, 9.896 V +/-0.049 (Hambsch);
15.3979, 10.159 B +/-0.043 (Hambsch);
15.4174, 9.858 V +/-0.013 (Hambsch);
15.4176, 9.870 V +/-0.012 (Hambsch);
15.4179, 9.869 V +/-0.012 (Hambsch);
15.4181, 8.026 I +/-0.017 (Hambsch);
15.4184, 8.010 I +/-0.017 (Hambsch);
15.4186, 8.028 I +/-0.017 (Hambsch);

Charts: Charts for N Mon 2012 may be created using the AAVSO Variable Star Plotter (VSP) at http://www.aavso.org/vsp.

Please submit observations to the AAVSO International Database using the name "N MON 2012" until an GCVS name is assigned and announced.

Notes:
a. Announced on IAU CBAT Central Bureau Electronic Telegram 3202 (Daniel W. E. Green, ed.).

b. Confirmed by Arto Oksanen (Muurame, Finland) using Caisey Harlingten site in San Pedro de Atacama, Chile, who gives coordinates RA 06 39 38.57 Dec. 05 53 53.0 (J2000.0) and magnitudes above on 2012 Aug. 13.3875 UT.

c. Fujikawa reports a faint cataloged star nearby:
USNOB1 06 39 38.581 +05 53 52.77 B1mag=19.72 B2mag=19.35 R1mag=17.77 R2=17.67 I=17.00
GSC2.3 06 39 38.600 +05 53 53.04 jmag=18.73 Vmag=18.41 Fmag=17.39 Nmag=16.51
2MASS 06 39 38.602 +05 53 52.98 J=15.759 H=15.231 Ks=15.036

d. N Mon 2012 was designated PNV J06393874+0553520 when it was posted on the CBAT TOCP webpage.

e. Spectra URLs:
Charbonnel - http://tinyurl.com/9rg8oz3
Edlin - http://tinyurl.com/9ccfky4
Imamura - http://tnblab.blog7.fc2.com/blog-entry-328.html

f. Multiple additional magnitudes and end position figures and are available in CBET 3202.


Congratulations to Shigehisa Fujikawa on his latest discovery!

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

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