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Possible new Nova in Lyra

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#1 Aquarellia

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Posted 06 June 2017 - 03:07 AM

Early this morning I received a message from the AAVSO about a new transient.

This could be an interesting new star for this summer.

Here the coordonates :

 

TCP J18154219+3515598 (UG:)

RA 18:15:42:19, DEC +35:15:59.8 (J2000.0)
2017 June 4.31 UT, 11.8 mag (CCD, unfiltered)
Discoverer: N.N.

 

This is a possible WZ Sge-type dwarf nova, we are waiting for spectro confirmation.

 

My estimation @ 1h53 UTC gives +/- 11.6.

Here's my at the EP original sketch:

 

nova-lyr_ll.jpg

 

Inverted this show that the little star directly under the year 2017 is quite red, and green on my original.

 

nova-lyr-i_ll.jpg

 

Hope this star will shine again and more...

Clear sky to you all

 

Michel


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#2 Special Ed

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Posted 06 June 2017 - 07:26 AM

Thanks for the heads up and sketch, Michel.  You were able to find and see it OK even with the bright moonlight?


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#3 Aquarellia

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Posted 06 June 2017 - 08:24 AM

Thanks for the heads up and sketch, Michel.  You were able to find and see it OK even with the bright moonlight?

Well, yes, at this time the moon was near the horizon and the nova was close to the zenith so it was the good moment. Maybe tomorrow morning we can have another window but shorter.

I hope that the nova will be brighter then.

Michel


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#4 frank5817

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Posted 06 June 2017 - 09:58 AM

Michel,

 

These short time outburst cataclysmic dwarf nova are always worth a look. Nice sketch.

Time for a look myself. The Moon should not present much of a problem on this target.

Thanks for posting.

 

Frank :)



#5 Allanbarth1

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Posted 06 June 2017 - 10:25 AM

As Special Ed said, thank you for the heads up tip and the coordinates to locate this. Also thanks for the sketch and description. Everything in you post will be a great help and should but me spot on target. 

 

Thanks again Michel



#6 Sheliak_sp

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Posted 06 June 2017 - 10:48 AM

Great! Thank you Michel for that wonderful sketch and the nice information, it will be very useful :)

 

Migue



#7 niteskystargazer

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Posted 06 June 2017 - 01:32 PM

Michel,

 

Thanks for the heads up and sketch smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#8 blb

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Posted 06 June 2017 - 03:45 PM

Michel, is this then a nova in our galaxy or in some NGC object, etc.?



#9 Aquarellia

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Posted 06 June 2017 - 04:29 PM

Michel, is this then a nova in our galaxy or in some NGC object, etc.?

All brillant novae are located in our Galaxy, for example the last supernova which is in NGC 6946 is a completely different phenomenon, very very violent, often as brillant as the whole host galaxy.

Michel



#10 Special Ed

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Posted 07 June 2017 - 09:16 AM

Hey,

 

I got a chance to see the nova this morning.  It cleared off after midnight and conditions were good but I still had trouble finding it because of the bright Moon.  My goto alignment needs a major tweak so plugging in the RA and Dec numbers was a non-starter.

 

Luna finally went behind the ridge to my west but I was a half hour into astronomical twilight so I had to hurry.  I starhopped from Vega to kappa Lyrae and from there worked my way to the SW about a degree.  The nova is very close to the border between Lyra and Hercules.  Using Michel's sketch as a chart, I recognized the star patterns and I was there!  Thanks, Michel.  smile.gif  

 

The sketch was done at the eyepiece with HB and 2B pencils.  The view is mirror-reversed.

 

The nova didn't appear quite as bright as the nearby 11.5 and 11.6 stars so I settled on 11.7

 

Nova Lyra 2017_2017.06.07.composite.v1.JPG


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#11 BrooksObs

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Posted 15 June 2017 - 09:21 AM

I note that this object is tentatively being classified on the AAVSO's chart for it as a probable previously unrecognized member of the UGWZ class. These are eruptive dwarf novae variables with long periods ad large amplitudes. I think this classification likely fits better than TCP J18154219+3515598 being regarded as an actual nova.

 

BrooksObs 


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#12 Special Ed

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Posted 17 June 2017 - 08:00 AM

Thanks for the info, BrooksObs.  I did a little reading and found there are a gazillion different types of novae.




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