Skip to main content

New possible faint Nova in Cygnus

CNY
CNY's picture
Offline
Joined: 2010-07-23

I read this this morning:   PNV J20263897+4337182

 http://www.cbat.eps.harvard.edu/unconf/followups/J20263897+4337182.html

8' from V503 Cyg
FRF
FRF's picture
Offline
Joined: 2010-08-09

It is located onyl 8' from V503 Cyg (UG). Might be visible on CCD frames of V503 Cyg...

Red object
wlp
wlp's picture
Offline
Joined: 2010-08-05

The position coincides with the bright red object 2MASS J20263897+4337182 = WISE J202638.97+433718.2 (J = 9.78, J-Ks = 2.53), so probably not a nova.

Patrick

Bright red object? Nothing is
FRF
FRF's picture
Offline
Joined: 2010-08-09

Bright red object? Nothing is visible on DSS images... :O

http://www.sky-map.org/?ra=20.444369687050944&de=43.62406933687106&zoom=...

Might be a faint mira?

Only one R and one I data in
FRF
FRF's picture
Offline
Joined: 2010-08-09

Only one R and one I data in USNO B1.0: 17.87R, 14,65I (1972.)
No B data in USNO B1.0.

http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-info=XML&-out.add=.&-source...

No APASS source in seqplot
FRF
FRF's picture
Offline
Joined: 2010-08-09

Seqplot doesn't shows any object at the given position. The faintest APASS object in the field is has 16.5V brightness (B-V=1,264) with 2 data, so I can assume the limit of the limit of this APASS field can be around 16.5V. (Unfortunately the PNV lies just outside of the V503 Cyg UNSO-Henden frames :(

It was visible 4 month ago
FRF
FRF's picture
Offline
Joined: 2010-08-09

 Denis Denisenko wrote in [vsnet-alert 16274]:

This is not a nova, but previously unreported red variable (Mira or
semiregular). It shows large variability on Palomar red plates (R1=17.87 on
1953-06-14 plate, not visible on 1992-08-27 plate). Also, USNO-B1.0 gives
near-IR magnitude I=14.65 from the 1992-06-20 plate.

(...) It was already there 4 months ago on MASTER image:

20130430.773 14.95C MASTER-Amur

 

http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/16274

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484