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Nova in Ophiuchus

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#1 Aquarellia

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Posted 13 March 2018 - 06:01 AM

Hello observational astrophysics group !

 

An other nova in Ohiuchus was discovered by Koichi Nishiyama and Fujio Kabashima (Japan)

2018 Mar. 10.8138 UT, 9.5 mag (CCD, unfiltered)

 

Tonight's we see the early stage of an eruption.

 

TCP J17140253-2849233 is visible in the morning sky, this morning the visual estimation I did was : +9.8

RA 17h14m02.53s, DEC -28°49'23.3" (J2000.0)

Other name : PNV J17140261-2849237
 

With this position and if this nova continues to shine we can have a long period of visibility.

 

More info here :

https://www.aavso.or...5-mag-ophiuchus

Michel


Edited by Aquarellia, 13 March 2018 - 06:03 AM.

  • goodricke1 and smithrrlyr like this

#2 Migwan

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Posted 13 March 2018 - 06:08 AM

Cool, thanks for passing us this info.

 

jd



#3 Aquarellia

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Posted 14 March 2018 - 04:20 AM

This morning (Pi day 14/3/2018 3:54 UTC) my magnitude estimation was +10.0.

Michel



#4 Ian Robinson

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Posted 14 March 2018 - 07:00 AM

Nice easy target for binoculars.   Is there a comparison star chart out for it yet ?



#5 Aquarellia

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Posted 14 March 2018 - 07:11 AM

Nice easy target for binoculars.   Is there a comparison star chart out for it yet ?

I use this one from AAVSO : http://astro.aquarel...Oph2018_map.jpg

Michel



#6 smithrrlyr

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Posted 14 March 2018 - 12:08 PM

Nice easy target for binoculars.   Is there a comparison star chart out for it yet ?

While the nova may be still bright enough for large binoculars from a dark site, the field is rather crowded with stars of similar brightness.  The higher power of a telescope may make it easier to identify the right star, though I imagine that a careful binocular observer could get it.



#7 VanJan

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Posted 26 March 2018 - 04:16 AM

Using the linked chart abovethanx.gif, on 26 March with 90mm refractor at 130x, I estimated the nova at 10.4 (10.1, 10.6).



#8 Aquarellia

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Posted 26 March 2018 - 05:35 AM

Using the linked chart abovethanx.gif, on 26 March with 90mm refractor at 130x, I estimated the nova at 10.4 (10.1, 10.6).

 

ok, the morning before yours, my estimation gives +12.5 but brighten, the curve looks like going up...

Michel


Edited by Aquarellia, 26 March 2018 - 05:35 AM.


#9 vakulenko_sergiy

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Posted 28 March 2018 - 08:33 PM

There is very interesing object in Ophiuchus - MAXI J1820+070 (ASASSN-18ey). It is very interesting, because X-ray outburst was detected from nova area. There is suspiction that it's binary system with black hole.

 

Souce:

https://www.aavso.or....top&oid=608515

http://adsabs.harvar...ATel11421....1L

 

I had a chance to observe MAXI J1820+070 at March 27, my brightness estimation is 12.0

NovaOphi_L_03_27_043829_300sec_1x1_x4.jp



#10 Aquarellia

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Posted 29 March 2018 - 01:10 AM

There is very interesing object in Ophiuchus - MAXI J1820+070 (ASASSN-18ey). It is very interesting, because X-ray outburst was detected from nova area. There is suspiction that it's binary system with black hole.

 

Souce:

https://www.aavso.or....top&oid=608515

http://adsabs.harvar...ATel11421....1L

 

I had a chance to observe MAXI J1820+070 at March 27, my brightness estimation is 12.0

 

Indeed and still brightening, however there is a special topic about this here:

https://www.cloudyni...ary-black-hole/

Michel




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