Alert Notice 677: Recurrent nova V3890 Sgr in outburst

Active Dates: Aug. 27, 2019 – Oct. 27, 2019


Abstract:

The symbiotic star and recurrent nova V3890 Sgr is in outburst, its third recorded outburst. The current outburst was first reported by Alfredo Pereira on August 27, 2019, at visual magnitude 6.7. Previous outbursts occurred in 1962 and 1990.

Justification:

Observations are needed immediately because of the rapid evolution of the outburst and the associated high energy phenomena.

Requested Data Types:

Photometry, Spectroscopy



Targets
Name Magnitude Variability Type Photometry Notes Spectroscopy Notes
V3890 Sgr 7.10 NR+E

Cadence: Not Specified

Precision: 100

Cadence: Not Specified

Resolution: 250

Desired SNR: 100


Spectroscopy Lines:

No spectroscopy lines provided

Photometry Filters:

No photometry filters provided

Comparison Stars:

No comparison stars provided


Co-Authorship

Observers are not eligible for co-authorship.

Additional Observer Input:

Not provided

Additional Submission Location:

Not provided


Forum URL

N/A


Notes:

Principal Investigator: Dr. Ulisse Munari; Imported Campaign (Alert Notice #677)