U Sco possible eruption › Forums › Variable Stars › U Sco possible eruption This topic has 9 replies, 5 voices, and was last updated 2 years, 1 month ago by Jeremy Shears. Viewing 10 posts - 1 through 10 (of 10 total) Author Posts 6 June 2022 at 8:01 pm #610917 Jeremy ShearsParticipant The recurrent nova U Sco is reported to be in eruption at mag 11.4 on June 6.720 (M. Moriyama, Nagasaki, Japan via baavss alert). Confirmation is urgently requested. If so, it might be on the rise. Max is usually around mag 8. Eruptions are very brief (a few days) Its last eruption was 2010. 6 June 2022 at 9:35 pm #610918 Jeremy ShearsParticipant Maehara-san (Okayama, Japan ) reports U Sco at mag 9.2 on Jun 6.773 6 June 2022 at 10:05 pm #610919 Jeremy ShearsParticipant Charts here: https://app.aavso.org/vsp/chart/?star=U%20SCO&fov=60&maglimit=14.5&resolution=150&north=up&east=left Can be scaled/orientated to choice 7 June 2022 at 7:28 am #610920 Jeremy ShearsParticipant Multiple confirmations of the eruption have appeared overnight. Appears to be around maximum (8th mag). In the 2010 eruption, it faded one mag in a day and 6 mags in 4 days. Let’s hope we get a break in UK skies (I’ve not seen any UK obs yet) 7 June 2022 at 11:03 am #610921 Daryl DobbsParticipant I was going to attempt an observation last night, cloud got in the way, might be a bit ambitious from where I live in South Wales as it has a good chance of being obscured by trees and buildings 7 June 2022 at 6:22 pm #610924 Robin LeadbeaterParticipant There is an early spectrum from the 2SPOT team from their robotic ALPY 600 setup in Chile https://groups.io/g/spectro-l/message/412 which seems to be evolving fast compared with the description of one taken less than 12 hours later referenced in Atel 15420 https://www.astronomerstelegram.org/?read=15420 7 June 2022 at 11:41 pm #610926 Graeme CoatesSpectator Managed to capture from Spain (EEYE) this evening (80mm f5, STF8300M): 07/06/2022 22:14:12UT TG 9.126 (0.024) 07/06/2022 22:14:59UT TG 9.158 (0.015) 07/06/2022 22:15:30UT TG 9.129 (0.016) This reply was modified 2 years, 2 months ago by Graeme Coates. 8 June 2022 at 10:11 am #610939 Graeme CoatesSpectator Here’s a single 60s exposure with Green filter – U Sco is marked centre of frame. North is left. Star A is HD 147473 (Mag 6.87V) Star B is HD 146592 (Mag 7.06V) Attachments:U_Sco_60s_G_202206082213_out-1.jpg 8 June 2022 at 4:50 pm #610941 Gary PoynerParticipant Not a chance from North Brum (even if clear), but SLOOH C2 captured an image on June 8… June 8.052 9.461CV (0.002) June 8.053 9.468TG (0.008) So it’s already nearly two mags fainter than it’s peak on June 7 (AAVSO light curve). Gary 30 June 2022 at 9:42 pm #611197 Jeremy ShearsParticipant A paper by Brad Schaefer submitted to MNRAS appears on ArXiv today: https://arxiv.org/abs/2206.14231# It describes a missed eruption of U Sco in 2016 Author Posts Viewing 10 posts - 1 through 10 (of 10 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Connect with :Login with Sheep CRM Log In