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Bright Nova in Cygnus

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34 replies to this topic

#1 vakulenko_sergiy

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Posted 13 July 2019 - 04:27 PM

TCP J21040470+4631129 was discovered by Hideo Nishimura (Shizuoka-ken, Japan)

 

Discovery details:
R.A. 21h04m04.70s, Decl. +46°31'12.9" (J2000.0)
2019 July 12.490 UT, 9.2 mag (CCD, unfiltered)
Discoverer: Hideo Nishimura (Shizuoka-ken, Japan)

 

A discovery image at http://www.oaa.gr.jp...SNinCyg2019.jpg

 

Searching map:

X24547BDL

 

Source - https://www.aavso.or...t-92-mag-cygnus

 

Two hours ago I was able to capture one 30 sec frame through the clouds and estimate brightness as 9.0 cV mag.

CygNova

 


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#2 alvarete

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Posted 13 July 2019 - 04:53 PM

Great!
Txs

#3 robin_astro

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Posted 13 July 2019 - 05:05 PM

According to  spectra taken by amateurs Francois Teyssier and Tim Lester this turns out not to be a classical nova but a large amplitude dwarf nova outburst

http://www.spectro-a...php?f=39&t=2355

http://www.astronome...org/?read=12936

 

Robin


Edited by robin_astro, 13 July 2019 - 05:06 PM.

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#4 KMA

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Posted 14 July 2019 - 04:20 AM

so far the nova is declining fast

here are my two visual reports

in two nights (good weather)

 

JD 2458677.5958   8.7mV

JD 2458678.7549   9.4mV

 

best regards

KMA


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#5 Rich (RLTYS)

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Posted 14 July 2019 - 10:05 AM

Didn't know about this one, thanks for the info.



#6 Aquarellia

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Posted 14 July 2019 - 10:32 AM

Here my souvenir of this object, just 9 hours after the discovery.

NovaCyg-2019_ll.jpg

 

Michel


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#7 KMA

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Posted 16 July 2019 - 04:40 AM

four old style visual observations

in four nights  (great weather)

best regards

KMA

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#8 KMA

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Posted 18 July 2019 - 04:39 AM

Looks like this nova may be with us a bit longer...

best regards

KMA

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#9 KMA

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Posted 21 July 2019 - 04:30 AM

Two more observations in 4 days



#10 KMA

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Posted 21 July 2019 - 04:34 AM

Two more observations in 4 days

best regards

KMA

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#11 KMA

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Posted 24 July 2019 - 07:05 AM

my last observation this morning

good weather

KMA

best regards

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#12 Rich (RLTYS)

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Posted 26 July 2019 - 06:18 AM

Excellent set of observations. Keep up the good work. waytogo.gif



#13 KMA

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Posted 26 July 2019 - 10:08 AM

Thanks for a compliment

the weather is so far cooperating

so a few more observation.......

best regards

KMA

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#14 KMA

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Posted 29 July 2019 - 06:08 AM

One night clouded out

but this morning clear....

best regards

KMA

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#15 robin_astro

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Posted 29 July 2019 - 08:26 AM

There is some impressive work being done on the short term photometric and spectroscopic line profile and radial velocity variations by Paolo Berardi and David Boyd on the ARAS forum

http://www.spectro-a...start=10#p12963

 

Cheers

Robin


Edited by robin_astro, 29 July 2019 - 08:28 AM.

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#16 KMA

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Posted 31 July 2019 - 06:43 AM

Very nice work on spectrum

of this object.

Thanks for the link.

Best regads

KMA

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#17 KMA

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Posted 02 August 2019 - 05:10 AM

Interesting pause in decline

did she stabilized ?

 

best regards to all

KMA

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#18 Rich (RLTYS)

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Posted 03 August 2019 - 08:30 AM

With Dwarf Novas you never know what they'll do next. It may continue to slowly fade or it may totally fade away almost over night. Keep observing as long as you can.



#19 KMA

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Posted 03 August 2019 - 11:12 AM

Thanks

and you are right

this morning another step down.....

best regards

KMA

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#20 KMA

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Posted 04 August 2019 - 04:26 PM

Probably my last reliable visual estimate

for nova is getting too dim....

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#21 KMA

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Posted 05 August 2019 - 05:01 AM

Just when I was thinking not to observe

this object so often

something strange happened.

Apparently only in a few hours

this nova lost about one full magnitude

in visual.

Very nice instrumental magnitude report confirmation  (green dots).....

with best regards

KMA

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#22 Rich (RLTYS)

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Posted 07 August 2019 - 06:28 AM

I imaged TCP J2104... on the 5th and estimated its mag at 13.4, using comp stars 134 and 140.



#23 KMA

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Posted 08 August 2019 - 05:04 AM

A few minutes ago

checking this object

there is a little brightening ?

best regards

KMA

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#24 KMA

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Posted 09 August 2019 - 04:08 AM

Looks like my observation was correct

and this morning nova is still brightening.

Its nice to have confirmations of others.....

regards

KMA

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#25 Aquarellia

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Posted 09 August 2019 - 04:27 AM

With Dwarf Novas you never know what they'll do next. It may continue to slowly fade or it may totally fade away almost over night. Keep observing as long as you can.

Well stated Rich !




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