[vsnet-alert 25424] Re: Gaia21avt (Nova Oph 2021)

[FIDRICH Róbert fidusz@gmail.com via vsnet-alert]

Dear Friends,

I managed to make photometry:

Gaia21avt 2021 02 20.76915 UT 15,306R (0,018) FID
Gaia21avt 2021 02 20.76915 UT 14,314I (0,018) FID

Best,

Róbert Fidrich
HAA/VSS

2021. 02. 21. 8:55 keltezéssel, FIDRICH Róbert írta:
> Now confirmed as a classical nova
> www.astronomerstelegram.org/?read=14413
> 
> Stacked 3x120s I-band images remotely made on Feb. 20.7586 UT using a 
> 0.43m reflector (T17) of http://iTelescope.net at Siding Spring, Australia:
> https://twitter.com/fidusz/status/1363373879671074817
> 
> Stacked 3x120s R-band images remotely made on Feb. 20.7676 UT:
> https://twitter.com/fidusz/status/1363396725482926082
> 
> Clear skies,
> 
> Robert Fidrich
> HAA/VSS
> 
> 
> 
> 2021. 02. 20. 4:47 keltezéssel, FIDRICH Róbert írta:
>> Discovery of probable galactic nova in Ophiuchus, Gaia21avt (AT 
>> 2021ddo) at mag 15.75 G, by the Gaia consortium.
>>
>> http://www.astronomerstelegram.org/?read=14402
>>
>> https://www.wis-tns.org/object/2021ddo
>>
>> ...
>>
>> ASAS-SN light curve:
>>
>> Gaia21avt 2021-02-19.34 UT <16.9g ASN
>>
>> https://asas-sn.osu.edu/sky-patrol/coordinate/288f92a0-d785-4608-ba5e-52baa885e7ea 
>>
>>
>> ...
>>
>> Archival OGLE Observations Reveal Orbital Period of Gaia21avt (AT2021ddo)
>>
>> The position of the transient is consistent with that of a faint star 
>> (I = 21.32 +/- 0.03 mag) listed as BLG611.07.120340 in the OGLE database.
>> The archival OGLE light curve of the source reveals eclipsing 
>> variability with a period of 0.9400430 +/- 0.000027 d. If the object 
>> is confirmed as a classical nova, this indicates that the system 
>> harbors an evolved secondary star, likely a subgiant
>>
>> http://www.astronomerstelegram.org/?read=14410
>>
>> . . .
>>
>> 3x120s I-band and 3x120s R-band images scheduled with T21 at Mayhill, 
>> New Mexico.
>>
>> Clear skies,
>>
>> Róbert Fidrich
>> HAA/VSS