[vsnet-alert 18475] PNV J20145000+1903300 is not a nova

Patrick Schmeer pasc1312-aavso at yahoo.de
Sun Mar 22 21:23:45 JST 2015

PNV J20145000+1903300 is a (non-astrophysical?)
transient of unknown nature but certainly not a nova.
(there was no known asteroid or comet near the
suspected nova's position on March 21.758 UT)

"2015 03 22.4357 UT
NO new object in an area of 60x60 arcminutes (imaged
through a 0.10-m f/5.0 astrograph + CCD, remotely from
Mayhill, USA on 2015, March 22.4357) centered on
RA 20h 14m 53.00s DEC +19° 03' 52.0" (blinking my
new image with an archive POSS plate) down to limiting
unfiltered magnitude ~15. Observer: Ernesto Guido"

"2015 03 22.4543 UT
There is no object at this position on two images (limiting
mag V=16.0 and R=16.5) taken on 2015 Mar. 22.454UT
with 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer,
Mayhill, USA. T. Yusa, Osaki, Japan."

Non-detection 16 hours before discovery:
"2015 03 21.09 UT
There is no trace of any object at this position down to
limiting magnitude R=12.9 on four consecutive 60s
patrol images, taken on 2015 Mar. 21.090-21.093UT
with 105mm, f/4 lens + CCD + Rc filter. H. Mikuz, Crni
Vrh Observatory, Slovenia."

Did you take any patrol image of this area in Sagitta
around March 21.758 UT?


Patrick Schmeer wrote:

 Subject: PNV J20145000+1903300: possible nova (8.5 mag) in Sagitta
 PNV J20145000+1903300
 Discoverer: Akihiko Tago, Okayama-ken, Japan
 R.A. 20h14m52.98s  Decl. +19°03'52.2"  (J2000.0)
 2015 March 21.758 UT, 8.5 mag (CCD, unfiltered)
 "2015 03 21.758 UT
 Discovered A. Tago, Okayama-ken, Japan, on two
 frames using a Digital camera + 105-mm f/3.2 lens.
 There is no information about the past frame.
 Position end figures 02s.84, 25".0 +/- 5" from two
 JPEG frames measured by Nakano."
 "2015 03 21.758 UT
 Sorry position from JPEG frames is 20h 14m 52s.98,
 +19o 03' 52".2, +/-5" correctly."
 Clear skies,

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