[vsnet-alert 13154] Outburst of the recurrent nova T Pyx !

[Wolfgang Renz]

Hello

The recurrent nova T Pyx is obviously going into outburst.

The last observed outburst started with a steep rise to mag 8 on ~ 7th Dec 1966,
reached 7 mag vis after an other month, and lasted ~ 280 d before it was back to
quiescence again.
http://www.aavso.org/lcg/plot?auid=T%20Pyx&lastdays=400&start=&stop=2439800&obscode=&obscode_symbol=2&obstotals=yes&grid=on&visual=on&r=on&unknown=on&uband=on&iband=on&fainterthan=on&bband=on&j=on&v=on&h=on&unvalidated=on&differential=on&pointsize=1&width=800&height=600&mag1=&mag2=&mean=5&vmean=5
The GCVS says that previous outbursts were observed in 1890, 1902, 1920, 1944.

Congrats to Michael Linnolt to spot and announce this rare outburst (AFAIK) first.

Clear skies
 Wolfgang

-- 
Wolfgang Renz, Karlsruhe, Germany


References:

From: "Steve Kerr"
To: aavso-discussion; AVSON; cvnet-outburst; vsnet-outburst
Sent: Thursday, April 14, 2011 12:56 PM
Subject: [AVSON] Re: [AAVSO-DIS] T PYX outburst?
> Hi,
> T Pyx appears to be rising quickly ...
> 20110414.44097 UTC PYXT 11.3 AAVSO Chart
> Observed with an 80mm refractor under bright moonlight ... it will 
> have been a while since that was possible.
> 
> Thanks,
> Steve Kerr
> Rockhampton, QLD
> Australia.


From: "Alan Plummer"
To: aavso-discussion
Sent: Thursday, April 14, 2011 10:29 AM UT
Subject: [AAVSO-DIS] T Pyx second estimate
> First estimate was 2455665.88472 12.2 used comp stars '120' and '125'
> on an old 'aavso preliminary chart'
> Second estimate = 2455665.93125 12.0 used the new chart where the
> '120' is no longer labelled. '122' and '115' are used.
> I trust the first estimate can be corrected by other people.
> alan

From: Alan Plummer
To: "Michael Linnolt"; aavso-discussion
Sent: Thursday, April 14, 2011 09:22 AM UT
Subject: Re: [AAVSO-DIS] T PYX outburst?
> T Pyx
> 2455665.88472 12.2 cloud moon
> best. alan

From: "Michael Linnolt"
To: aavso-discussion
Sent: Thursday, April 14, 2011 07:18 AM UT
Subject: [AAVSO-DIS] T PYX outburst?
> I observed it just now Apr 14 0702UT at v=13.0 I noticed it was around 
> v=14.5 last night, but now its the brightest I have ever seen it!
> Mike Linnolt (LMK)

From: "Rod Stubbings"
To: vsnet-outburst; cvnet-outburst
Sent: Thursday, April 07, 2011 03:31 PM UT
Subject: [vsnet-outburst 12604] Recent activity
> Recent outbursts and selected activity observed the past few nights.
> PYXT           110405.510   145  Stu.RASNZ
> PYXT           110405.536   145  Stu.RASNZ
> PYXT           110405.599   147  Stu.RASNZ
> PYXT           110406.467   147  Stu.RASNZ
> PYXT           110407.501   148  Stu.RASNZ


From: "cvnet-circ-gen"
To: cvnet-circular
Sent: Monday, April 11, 2011 9:00 AM
Subject: [cvnet-circular] CV Circular for Mar 13, 2011 to Apr 11, 2011
> CVNET Circular   2011.04 (Mar. 13 - Apr. 11)   (JD 0d = 2455662)
> edited by M. Simonsen, C. Watson
> T PYX      (NRB) <146(16) <100(21) <115(27) <125(28) <140(29) 152(30) <125(31)
>           <140(1) <133(5) <125(10) AAX,ASA,BVS,LMK,MTH,PAW,SVA

VSX entry with further refs:
http://www.aavso.org/vsx/index.php?view=detail.top&oid=27184

AAVSO - Recent LC of T Pyx:
tp://www.aavso.org/lcg/plot?auid=T%20Pyx&lastdays=80&start=&stop=&obscode=&obscode_symbol=2&obstotals=yes&grid=on&visual=on&r=on&unknown=on&uband=on&iband=on&fainterthan=on&bband=on&j=on&v=on&h=on&unvalidated=on&differential=on&pointsize=1&width=800&height=600&mag1=&mag2=&mean=&vmean=

AAVSO - Quicklook data of T Pyx:
http://www.aavso.org/ql/results?auid=T%20Pyx&startjd=2455595
Name  JD            CalendarDate     Mag   Filter ComCodes Obsrvr. Err Comp1 Comp2 Trnsf Chart   Comments
T PYX 2455665.93125 2011 Apr 14.4313 12.0  Vis.   Z        PAW         122   115   N/A   4677EGZ 

T Pyx 2455665.88472 2011 Apr 14.3847 12.2  Vis.   BUYS     PAW         120   125   N/A   aavso prelim chart 
T PYX 2455665.79306 2011 Apr 14.2931 13.0  Vis.   Y        LMK         125   134   N/A   4510bp
T PYX 2455664.99375 2011 Apr 13.4938 <11.5 Vis.            MTH         11.5        N/A   040329
T PYX 2455664.85903 2011 Apr 13.3590 14.5  Vis.   BD       LMK         143   146   N/A   4510bp  brighter than usual + flaring
T PYX 2455663.96528 2011 Apr 12.4653 <12.5 Vis.            MTH         12.5        N/A   040329
T PYX 2455662.93819 2011 Apr 11.4382 <12.5 Vis.            MTH         12.5        N/A   040329
T PYX 2455661.95139 2011 Apr 10.4514 <12.5 Vis.            MTH         12.5        N/A   040329
T PYX 2455660.00486 2011 Apr 8.5049  <14.0 Vis.            PAW         140         N/A   040329
T PYX 2455657.4667  2011 Apr 5.9667  <13.3 Vis.            AAX         125   133   N/A   PD2-93
T PYX 2455653.33056 2011 Apr 1.8306  <12.5 Vis.   UL       BVS         125         N/A   3342cjj 8"S-C @ 206x
T Pyx 2455653.0729  2011 Apr 1.5729  <13.7 Vis.   K        SVA         13.7        N/A   NZ1072
T PYX 2455652.92292 2011 Apr 1.4229  <14.0 Vis.            PAW         140         N/A   040329
T PYX 2455651.96736 2011 Mar 31.4674 <12.5 Vis.            MTH         12.5        N/A   040329
T PYX 2455650.81944 2011 Mar 30.3194 15.2  Vis.            LMK         151   154   N/A   3816g
...
AAX  AMORIM, ALEXANDRE BRAZIL
BVS  BOLZONI, SIMONE ITALY
LMK  LINNOLT, MICHAEL USA
MTH  MATSUYAMA, HIROSHI AUSTRALIA
PAW  PLUMMER, ALAN AUSTRALIA
SVA  SAW, ADRIAN AUSTRALIA