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ASASSN-19aad (= TCP J18395972-1025415): probable nova (9.4 mag) in Scutum

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SPK
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ASASSN-19aad (= TCP J18395972-1025415): probable nova (9.4 mag) in Scutum

ASASSN-19aad (= AT 2019tpb, TCP J18395972-1025415)

Discovery details:
R.A. 18h39m59.70s, Decl. -10°25'41.5" (J2000.0, K. Itagaki's follow-up observation)
2019 October 29.0578 UT, gmag. 11.56 (ASAS-SN)
Discoverer: All-Sky Automated Survey for Supernovae (ASAS-SN)

Links:
https://wis-tns.weizmann.ac.il/object/2019tpb
http://www.cbat.eps.harvard.edu/unconf/followups/J18395972-1025415.html
https://asas-sn.osu.edu/light_curves/f4d4863d-ca2a-4238-9adb-04bdd551bac9
http://k-itagaki.jp/images/PN-sct.jpg

Looks like a (reddened) nova that erupted on 2019 October 28.
Spectroscopy and multiband-photometry (also precise astrometry) are urgently required.

Clear skies,
Patrick

Deconinck Michel
Deconinck Michel's picture
Indeed a red new star, Thank

Indeed a red new star, Thank you Patrick for this new nova, the 3rd I saw in Sct

2017 : ASASSN-17HX and Nova Sct 2018

I just made two visual observations:

m +9.34 - 2019/10/29/18/00 UT

m +9.32 - 2019/10/29/18/55 UT

Sorry I'm just a visual observer

Michel

SPK
SPK's picture
Spectroscopic confirmation as a nova

ASASSN-19aad (N)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=1499545

Spectroscopic Classification of AT 2019tpb/ASASSN-19aad as a Galactic Nova (ATel #13241): http://www.astronomerstelegram.org/?read=13241

Regards,
Patrick

PS:
My pleasure, Michel. Btw, please use the GCVS names V612 Sct for ASASSN-17hx and V613 Sct for Nova Scuti 2018:
https://www.aavso.org/vsx/index.php?view=detail.top&oid=479147
https://www.aavso.org/vsx/index.php?view=detail.top&oid=621695

hambsch
hambsch's picture
Nova brighter last night

The new nova brightened to mag 8.6 as of last night's observations from ROAD  observatory, BVRI data submitted to the AAVSO.

I think more and brighter comp stars are needed for this target.

Josch

FRF
FRF's picture
Still brightening the nova

I've just wrote in the PACA_Transients facebook group, that it seems, still ASASSN-19aad is brightening. On my images made this morning around 01:45UT (JD 2458786.57324) using T20 of itelescope.net at Mayhill NM the nova was around. 8.7V.

Clear skies,

Robert

SPK
SPK's picture
V659 Scuti = Nova Scuti 2019 = TCP J18395972-1025415 (CBET 4690)

V659 Scuti = ASASSN-19aad (N)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=1499545

Central Bureau for Astronomical Telegrams, Electronic Telegram No. 4690 (behind paywall): http://www.cbat.eps.harvard.edu/iau/cbet/004600/CBET004690.txt

Regards,
Patrick

Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

Hello all!

I observed (around 2458787.57 JD) V0659 Scuti remotely with iTelescope T5 and added my observations to the AAVSO database: V ≈ 8.4 mag., B ≈ 9.95 mag.

I am attaching the photo (15+30+60 sec. exposure time, FOV = 60.6 x 40.8 arcmin, V band).

Best regards,

Filipp.

File upload: 
Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

Based on my recent observations (2458787.94 JD) from Yuzhno-Morskoy (near Nakhodka, Russia), star brightness decreases. It was about 8.77 TG (Canon EOS 60D, 135mm lens, exposure time 8 sec., ISO-6400).
I am attaching one of the photographs.
Best regards,
Filipp.

File upload: 
FRF
FRF's picture
Extended AAVSO chart

Extended AAVSO chart with brighter comp stars:

https://www.aavso.org/apps/vsp/chart/X24867AT.png

ACN
ACN's picture
Nova Sct 2019 image

Friends,

It seems me that is the image of the Nova Sct 2019; mag 8.9

Carlos - ACN

(photo of Luiz Antonio Reck Araujo, Pelotas - RS- Brazil)

weo
weo's picture
AAVSO Alert Notice 683 on V659 Sct = N Sct 2019

AAVSO Alert Notice 683 reports on V659 Sct = N Sct 2019 (= ASASSN-19aad, TCP J18395972-102541). Please see the notice for discovery details, recent observations, and observing instructions. Note that the sequence for V659 Sct has been extended in both directions since its initial release.

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

 

Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

Thanks for creating the Alert Notice! I hope that now more observers will pay attention to this star.

My latest observations of this variable:

2019 Nov. 01.44697    9.184    0.09    TG
2019 Nov. 01.44678    9.199    0.09    TG

I also attach one of the new photos (Canon EOS 60D on the tripod, 135mm lens, exposure time 10 sec., ISO-6400).

Best regards,

Filipp.

File upload: 
Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

I photographed this variable star with my camera in the evening of November 2 and November 3. My observations:

2019 Nov. 02.38472  9.351  0.1 TG

2019 Nov. 03.40278  9.78   0.07  TG

Photo 1 - single shot taken on November 2.

Photo 2 - stack (6 * 10 seconds) taken on November 2.

TYS
TYS's picture
V659 Sct

Made my first visual observation, based on a Slooh digital image. I estimated V659 Sct at mag 9.5 using comp stars 91 and 9.8.

Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

2019 Nov. 04.40139 10.149 0.09 TG

Canon EOS 60D, 135mm lens. Stack 9*10 sec.

File upload: 
FRF
FRF's picture
Nova Sct 2019 fading quickly

According to latest observations, the nova is fading quickly. Recently it's fainter than 10 visually. Unfortunately the wheather here in Hungary is hopeless now :(
I hope the cataclysmic guys from other parts of the planet can regularly observe V659 Sct.

Clear skies,

Robert

hambsch
hambsch's picture
Continuing observations

hi Robert,

I continue observations of this nova and last nights data are in the AAVSo database.

The V magnitude is about 9.8.

Josch

Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

The brightness of the star for the day has not changed (within the error).

2019 Nov. 05.39792 10.089 +-0.07 TG

File upload: 
Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

I measured the brightness of the V659 Scuti from my other photos for the dates from November 2 to 5:

2019 Nov. 02.38681 9.376   +/- 0.07   TG

2019 Nov. 03.40556   9.74   +/- 0.04   TG

2019 Nov. 04.40243   10.03 +/- 0.08 TG

2019 Nov. 05.39988   10.29 +/- 0.1   TG

In the evening of November 6, I once again photographed this variable star. My DSLR observations (I attached my photo):

2019 Nov. 06.40937   10.44   0.05   TG
2019 Nov. 06.41042   10.51   0.05   TG

File upload: 
Filipp Romanov
Filipp Romanov's picture
V0659 Scuti: rapid fading

In my photo (I attached it) dated November 7, 2019, the star showed rapid fading:

2019 Nov. 07.39097 11.0 +/- 0.1 TG

File upload: 
Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

Today, the brightness of the star was again at 10.4 TG.

2019 Nov. 08.39514   10.402   +/-0.1   TG
2019 Nov. 08.39722   10.40   +/-0.05   TG

AAVSO light curve shows a period of about two days. Yesterday, I photographed a sharp decrease in the brightness of the variable.

Filipp Romanov
Filipp Romanov's picture
V0659 Scuti

The brightness of the star decreased much.

2019 Nov. 09.39931 12.0 +/- 0.2 TG

File upload: 
miror
miror's picture
AT2019tpb/ASASSN-19aad

Hallo everybody,

I am Paolo from Italy and I am a new aavso member. I am just e bit confused regarding the extention used to submit spectra files: they should be ascii or fits file?

I've been following this nova from October 29th and i would like to show you a comparison made between November 8th and 10th when the nova still showed a diffuse spectrum behavior. Please, the following it's just an image file.

I hope there is good weather tonight

Paolo

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