Nova Delphinus 2013 = PNV J20233073+2046041 - [color=red]bri

[PTS]

AAVSO Alert Notice 489

Nova Delphinus 2013 = PNV J20233073+2046041
August 16, 2013

Event: Nova Del 2013 = PNV J20233073+2046041

Discovered by: Koichi Itagaki (Teppo-cho, Yamagata, Japan),
reported by S. Nakano (Sumoto, Japan)

Discovery Magnitude: unfiltered CCD magnitude mag 6.8 using a
0.18-m reflector

Discovery date: 2013 Aug. 14.584 UT

Coordinates: R.A. 20 23 30.73 Decl. +20 46 04.1 (2000.0)

Spectra: Spectra by numerous professional and amateur astronomers
show strong H-alpha and H-beta emission and P Cygni profile emission
lines, all pointing to a pre-maximum classical nova. For details on
spectra, see CBET 3628 and the IAU Circular to be announced shortly.
Postings to the AAVSO Spectroscopy Forum
(http://www.aavso.org/forums/variable-st ... ectroscopy)
also contain information on spectra, as well as observing and
reporting instructions for spectroscopists.

Charts: Charts for Nova Del 2013 may be created using the AAVSO
Variable Star Plotter (VSP) at http://www.aavso.org/vsp. We have
created a binocular sequence for this nova that can be plotted
using the Binocular Chart option on VSP. For best results specify
a field of view of 900 arc minutes (15 degrees) and a limiting
magnitude of 7 and click on the Binocular Chart option. This will
produce an uncluttered chart with a sequence from 6.9 to 3.5V for
use with binoculars.

Observations reported to the AAVSO: Over 725 observations have been
reported to the AAVSO since the discovery of Nova Del 2013. For a
complete, up-to-the-minute listing of observations, go to the AAVSO
website homepage (http://www.aavso.org), enter Nova Del 2013 into
the Star Finder feature, and click on 'Check recent observations'.
Representative observations, including prediscovery ones, include:

CCD observations:
2013 May 13.998, 17.1 unfiltered (D. Denisenko et al., double 0.40-m
f/2.5 robotic MASTER-Kislovodsk reflector, Russia; via CBET 3628);
Aug. 13.565, <13.0 (Itagaki; via CBET 3628);
13.95486, <10.2 CV (MGAB, G. Murawski, Suwalki, Poland);
14.8, 6.8 unfiltered (E. Guido, N. Ruocco, and N. Howes, remotely
using a 0.43-m f/6.8 astrograph near Nerpio, Spain; via CBET 3628);
14.8, 6.1 R (Guido et al.; 0.25-m f/6.3 telescope at Sorrento,
Italy; via CBET 3628);
14.8, 6.9 unfiltered (Guido et al., Sorrento; via CBET 3628);
14.802, 6.4 R (S. Shurpakov, Baran, Belarus; via CBET 3628);
14.81700, 6.5 CV (SIV, I. Sergey, Molodechno, Belarus);
14.87207, 6.428 V +/-0.028 (HPIA, P. Hallsten, Vasterhaninge, Sweden);
14.87643, 6.432 B +/-0.004 (CLZ, L. Corp, Rodez, France);
14.87736, 6.108 V +/-0.002 (Corp);
14.87812, 5.680 R +/-0.002 (Corp);
14.90647, 6.489 V +/-0.028 (Hallsten);
14.92293, 5.617 R +/-0.005 (ILUA, L. Izzo, Rome, Italy);
14.92293, 6.103 V +/-0.005 (Izzo);
14.92293, 6.773 B +/-0.005 (Izzo);
14.94930, 6.3 CV +/-0.008 (KTHA, T. Karlsson, Varberg, Sweden);
15.14916, 5.876 V +/-0.004 (CMJA, M. Cook, Newcastle, ON, Canada);
15.14895, 6.045 B +/-0.009 (Cook);
15.83727, 5.352 B +/-0.013 (WTHB, T. Wikander, Borlange, Sweden);
15.84440, 5.129 V +/-0.046 (VOL, W. Vollmann, Vienna, Austria);
15.86870, 5.097 CV +/-0.008 (Karlsson);
15.88326, 5.127 V +/-0.01 (SBX, A. Sonka, Bucharest, Romania);
16.03739, 4.60 I +/-0.02 (GKOA, K. Gazeas, Athens, Greece
16.03531, 4.71 R +/-0.04 (Gazeas);
16.03344, 4.80 V +/-0.04 (Gazeas);
16.03143, 4.97 B +/-0.03 (Gazeas);
16.27911, 4.445 V +/-0.008 (OAR, A. Oksanen, Muurame, Finland);
16.27804, 4.820 B +/-0.021 (Oksanen);

J. Blackwell (BKL, Exeter, NH) has 24 V obs, 8 B obs, Aug. 15.14015 at
5.858 V +/-0.002 through Aug. 15.15550 at 5.849 V +/-0.004.

K. Graham (GKA, Manhattan, IL) has 267 V observations Aug. 15.18369
at 5.866 +/-0.009 through Aug. 15.18347 at 5.873 +/-0.009.

A. Van Der Hoeven (HAGA, HI-Ambacht, Netherlands) has 166 V
observations Aug. 14.93736 at 6.3070 +/-0.0072 through Aug. 15.88907
at 5.1284 +/-0.0038.

visual observations:
14.829 UT, 6.0 (SPK, P. Schmeer, Bischmisheim, Germany)
14.87847, 6.3 (WAU, A. Wargin, Bydgoszcz, Poland);
14.88194, 6.3 (MUY, E. Muyllaert, Oostende, Belgium);
14.88472, 6.6 (WLP, P. Wils, Hever, Belgium);
14.89236, 6.1 (GPIA, P. Guzik, Krosno, Poland);
14.91459, 6.5 (VSD, D. Vansteelant, Varsenare, Belgium);
14.91528, 6.3 (BOS, E. Broens, Mol, Belgium);
14.94722, 6.2 (TTU, T. Tezel, Kukurtlu, Turkey);
14.94790, 6.4 (KTHA, T. Karlsson, Varberg, Sweden);
14.99930, 6.1 (GZN, A. Glez-Herrera, Ferrol, Spain);
15.08333, 6.0 (MCLA, C. Muir, Canada);
15.12780, 5.8 (PKV, K. Paxson, Centerville, OH);
15.14310, 5.7 (BRJ, J. Bortle, Stormville, NY);
15.17847, 5.5 (HUZ, R. Huziak, Saskatoon, SK, Canada);
15.20556, 5.7 (SGE, G. Sarty, Saskatoon, SK, Canada);
15.20833, 5.4 (WGE, G. Ward, Flemington, WV);
15.25833, 5.5 (LMK, M. Linnolt, Ocean View, HI);
15.26597, 5.6 (MCPA, C. Maloney, Helena, AR);
15.29650, 5.8 (KMA, M. Komorous, London, ON, Canada);
15.31319, 5.8 (BJS, J. Bedient, Honolulu, HI);
15.38403, 5.6 (SLH, L. Shotter, Uniontown, PA);
15.39028, 5.9 (WCG, C. Wyatt, Walcha, NSW, Australia);
15.41736, 5.9 (MTH, H. Matsuyama, Kanimbla, QLD, Australia);
15.56244, 5.6 (BDJB, D. Benn, Klemzig, SA, Australia);
15.57292, 5.5 (PEX, A. Pearce, Nedlands, WA, Australia);
15.65972, 5.5 (CMQ, P. Camilleri, Warners Bay, NSW, Australia);
15.77917, 5.2 (GBZ, O. Gabzo, Givatayim, Israel);
15.80556, 5.0 (NLZ, L. Nemeth, Petfurdo, Hungary);
15.80900, 5.3 (BSR, S. Baroni, Milan, Italy);
15.81944, 5.2 (MVH, V. Mihai, Bucharest, Romania);
15.82292, 5.1 (KAM, A. Kammerer, St. Leon-Rot, Germany);
15.83300, 5.0 (BQ, L. Bartha, Budapest, Hungary);
15.83681, 5.1 (BLD, D. Blane, Henley-on-Klip, South Africa);
15.84167, 5.0 (MVO, V. Makela, Helsinki, Finland);
15.85694, 5.17(BISA, I. Bryukhanov, Minsk, Belarus);
15.86458, 5.0 (GGU, G. Gilein, Noordwijk, Netherlands);
15.87500, 5.1 (LMT, M. Legutko, Gliwice, Poland);
15.89580, 5.0 (PLP, L. Palazzi, Genova, Italy);
15.89931, 4.9 (VNL, F. Van Loo, Genk, Gelgium);
15.90139, 4.8 (RFC, F. Rodriguez Bergali, Seville, Spain);
15.90903, 5.1 (CUU, J. Curto Amigo, Maliano, Spain);
15.91319, 5.0 (AAX, A. Amorim, Florianopolis, Brazil);
15.91667, 5.0 (HEY, B. Heyndricks, Zwijnaarde, Belgium);
15.92560, 5.1 (BTAD, T. Banys, Lodz, Poland);
15.93750, 5.0 (ACN, C. Adib, Porto Alegre, Brazil);
15.95139, 5.1 (SROC, R. Szaj, Rybno, Poland);
15.96875, 5.1 (RVR, V. Ruiz, Spain);
15.98889, 5.1 (MGAB, G. Murawski, Suwalki, Poland);
16.03125, 5.0 (GPMA, P. Gray, Greenwood, NS, Canada);
16.03403 4.9 (ONJ, J. O'Neill, Rush, Ireland);
16.04583, 5.0 (HQA, A. Henden, Cambridge, MA);
16.05000, 4.8 (DSJ, J. De Souza Aguiar, Campinas, Brazil);
16.06110, 4.9 (Bortle);
16.06528, 4.9 (BSJ, S. Beck, Topsfield, MA);
16.07639, 4.8 (Muir);
16.09167, 4.6 (TYS, R. Tyson, Freeport, NY);
16.10903, 4.9 (TBA, A. Tekatch, Hamilton, ON, Canada);
16.12361, 4.9 (SXN, M. Simonsen, Imlay City, MI);
16.13540, 4.8 (BTB, T. Bretl, Plymouth, MN);
16.14583, 4.7 (STI, P. Steffey, Daytona Beach, FL);
16.16611, 4.6 (ZQIA, Q. Zhang, Lake Elsinore, CA);
16.18540, 4.7 (Paxson);
16.23056, 4.7 (RBK, B. Ramotowski, Tijeras, NM);
16.27778, 4.6 (Bedient);
16.28958, 4.5 (Maloney);
16.34722, 4.4 (Linnolt);
16.36458, 4.4 (BMI, M. Brewster, Dripping Springs, TX);
16.39236, 4.4 (Wyatt);
16.50139, 4.5 (SANG, A. Sing, Makati City, Philippines);
16.52083, 4.5 (MMIK, M. Matessa, Ben Lomond, CA);
16.56458, 4.3 (ONOA, N. Ohuo, Hiroshima, Japan);
16.61389, 4.4 (Pearce);
16.79861, 4.6 (RZM, M. Rzepka, Krosno, Poland);
16.80278, 4.7 (Nemeth);
16.80903, 4.56 (PMAA, M. Pirtac, Onesti, Romania);
16.81320, 4.5 (Baroni);
16.81736, 4.4 (Sergey);
16.82290, 4.7 (Palazzi);
16.82639, 4.5 (SSW, S. Swiercyznski, Dobczyce, Poland);
16.83333, 4.6 (WTHA, T. Will, Rednitzhembach, Germany);
16.83542, 4.8 (TUO, U. Tagliaferri, Collepardo, Italy);
16.84028, 4.5 (PGC, G. Pappa, Mascalucia, Sicily, Italy);
16.84400, 4.7 (MPR, P. Maurer, Bad Friedichshall, Germany);
16.84722, 4.6 (GOC, R. Grochoswski, Swidnica, Poland);
16.86250, 4.5 (WNBA, N. Wakefield, Highbridge, England);
16.86458, 4.6 ((Makela);
16.90278, 4.4 (JDAA, D. Jakubek, Smardzowice, Poland);

Submit observations: Please submit observations to the AAVSO
International Database using the name NOVA DEL 2013 until a GCVS
name is assigned and announced.

Notes:
a. Announced on IAU CBAT Central Bureau Electronic Telegram 3628
(Daniel W. E. Green, ed.).

b. Nova Del 2013 was designated PNV J20233073+2046041 when it was
posted on the CBAT TOCP webpage
(http://www.cbat.eps.harvard.edu/unconf/tocp.html).

c. Confirmed by Itagaki on unfiltered images taken with a 0.60-m
f/5.7 reflector on Aug. 14.750 that show the variable at mag 6.3.

d. Itagaki posted his discovery image at
http://www.k-itagaki.jp/images/pnv-del.jpg.

e. P. Schmeer (Bischmisheim, Germany) reports a star of blue magnitude 17
(16.86 V, from The Guide Star Catalogue, Version 2.3.2) located about 0.3" from
the position of the nova at position end figures 30.714s, 04.22".
Denisenko et al. suggest that the variable is identical to the blue star
USNO-B1.0 1107-0509795 (position end figures 30.713s, 03.97"; blue mag 17.2-
17.4, red mag 17.4-17.7) and to the ultraviolet source GALEX J202330.7+204603
(NUV magnitude 17.9); their color-combined (BRIR) Digitized Sky Survey finder
chart posted at http://master.sai.msu.ru/static/OT/J202 ... RIR5x5.jpg
(field-of-view 5' x 5') has the proposed precursor marked. (CBET 3628)

f. References to multiple images and position end figures are given in CBET 3628.

Congratulations to Koichi Itagaki on his latest discovery!


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


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