PNV J06000985+1426152 2014 03 05.475 * 06 00 09.85 +14 26 15.2 13.5 U Ori 9 0
2014 03 05.475
Discovered by H. Nishimura, Kakegawa, Japan, on four 10-s frames (limiting magnitude = 14.5) using 200-mm f/3.2 lens + Digital camera, who writes nothing is visible at this location on his past frames taken on 2014 Jan. 22, 26, Feb. 2 and 11 UT (limit mag.= 14.5) using same patrol camera.
2014 03 05.656
D. Denisenko, V. Lipunov and E. Gorbovskoy (SAI MSU) report on behalf of the larger MASTER team: MASTER-Tunka robotic telescope (0.40-m f/2.5 reflector + 4kx4k CCD) observed the position of PNV J06000985+1426152 in survey mode on 2014 Mar. 03.521-03.574 UT, two nights before the discovery by H. Nishimura. The object was not present on the sum of five 60-sec unfiltered exposures to the limiting magnitude 18.5. Following the posting at CBAT TOCP, we have pointed MASTER-Tunka again at this area of sky. On the first 60-sec unfiltered exposure on 2014 Mar. 05.656 UT we confirm the new bright object at the following position: 06 00 10.03 +14 26 12.2. The object is definitely an outburst of the star USNO-B1.0 1044-0081025 with the following coordinates and magnitudes in USNO-B catalogue: 06 00 10.048 +14 26 12.76 B1=19.35 R1=19.88 B2=20.02 R2=20.39 I=17.85. Based on the outburst amplitude it is likely a dwarf nova of SU UMa or WZ Sge type. Comparison of Mar. 03 and 05 MASTER-Tunka images is posted at http://master.sai.msu.ru/static/OT/J060009+142615-MASTER-Tunka.jpg
2014 03 06.1098
Possible nova detected at coordinates 06 00 10.07 +14 26 12.3 (UCAC3) . Magnitude 12.7 U +/- 0.1 magnitude. Limiting magnitude 17.2 . Position and magnitude are average of measurement of five separate 30-sec images. Observer: R. A. Koff, Antelope Hills Observatory, Bennett, Colorado USA (H09). Image posted at: http://antelopehillsobservatory.org/SNpictures/PNVJ06000985+1426152final.jpg
2014 03 06.404
Mag.= 12.5, position end figures 10s.07, 12".5 observed by K. Itagaki, Yamagata, Japan, using 0.50-m f/6.8 reflector + unfiltered CCD remotely (UCAC4). Also Mag.= 12.8, position end figures 10s.07, 12".4 observed T. Noguchi, Katori, on Mar. 6.472 UT using 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD (UCAC4), who found a star of Mag.= 18.6 at quite same location on DSS (Red, 1990). Image at http://park8.wakwak.com/~ngc/images/PNVinOri.jpg.
2014 03 06.493
Mag.= 12.6, observed by K. Yoshimoto, Yamaguti-ken, Japan, using 180-mm f/2.8 lens + Digital camera, who writes star shows blue color. See an image at http://orange.zero.jp/k-yoshimoto/PNV-J06000985+1426152.jpg.
2014 03 06.823
Follow up photometry by Enrique de Miguel (Observatorio del CIECEM, Huelva, Spain) with 0.28-m f/10 telescope + CCD: 2014 Mar. 05.8584 UT, 12.84B, 12.87V; 06.8230 UT, 12.73B, 12.80V. Blue color is in agreement with the dwarf nova in outburst.
2014 03 07.759
P. Berardi, L'Aquila, Italy, obtained a low-resolution spectrum of this transient on 2014 Feb 7, 18 UT. Observation was performed at Bellavista Observatory (MPC code C93), using 0.23 m Schmidt-Cassegrain telescope and Lhires III spectrograph configured for low-resolution (4000-7000A, 10A res.). The blue continuum and absorption of H-beta, H-gamma and H-delta lines suggest that the current brightening of this object would be a dwarf nova outburst. Spectral profile is available here: http://quasar.teoth.it/html/spectra/PNV J13544700-5909080_feb7.png
2014 03 07.759
Erratum: in the spectroscopic observation above read Mar instead of Feb.
2014 03 08.765
Follow up photometry by Flavio Castellani and Raffaele Belligoli (Observatory Monte Baldo, VR Italy) with 0.4-m f/8 telescope + CCD FLI 1001e: 2014 Mar. 08.765 UT, 12.952Bj (Err 0.005), 12.932Vj (0.005), Rc 12.991 (Err 0.005) Ic.12.957 (Err. 0.008)