Electronic Telegram No. 5690
Central Bureau for Astronomical Telegrams
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V419 MUSCAE = NOVA MUSCAE 2026
     K. Stanek found a nova candidate (mag 9; Sloan g filter) on an image 
obtained in the course of the All-Sky Automated Survey for Supernovae 
(ASAS-SN) on May 24.03 UT that was not present on a similar image taken on May 
10.14 (limiting mag 16).  The variable is located at R.A. = 11h44m33s.12, 
Decl. = -68d48'32".9 (equinox J2000.0) and was posted at website URL
https://www.wis-tns.org/object/2026noc.
     A. Pearce, Nedlands, Western Australia, writes that he measured position
end figures 32s.19, 26".8 from a CCD image obtained on May 25.484 UT with a
0.35-m f/6 reflector at Perth Observatory (Gaia DR2 star positions), with
magnitudes V = 7.95, R = 7.32, I = 7.20.  This position is within 0".4 of a 
Gaia-catalogue star of magnitude G = 19.0 (Gaia DR3 5234209543365939072). 
Pearce measured visual magnitude 8.8 on May 25.575.
     R. Kaufman (Bright, Victoria, Australia) reports that he obtained a
low-resolution spectrogram on May 25.59 UT via eight 30-s exposures taken in 
bright moonlight with a Canon 800D camera (+ 200-mm-f.l. f/3.5 lens + SA100 
grating at ISO 12800) that shows prominent H_alpha and H_beta emissions, 
suggesting a classical nova.
     Strader et al. report (https://www.astronomerstelegram.org/?read=17813)
that spectroscopy obtained on May 25.97 UT with the SOAR 4.1-m telescope (+ 
Goodman Spectrograph) shows a flat continuum (suggesting only modest 
reddening) with strong emission lines of hydrogen (FWHM about 1400 km/s for
H_beta), He I, and Fe II.  Most of the emission lines show strong P-Cyg
profiles extending to about -1000 km/s from rest, all consistent with this
being a slow classical nova.
     Mlangeni et al. report on spectroscopy (range 400-800 nm) obtained on May 
24.93 UT using the Lesedi 1.0-m telescope at the South African Astronomical 
Observatory (+ Mookodi spectrograph) at Sutherland.  Prominent Balmer emission
lines along with many blended Fe II emission features (multiplets 42, 49, 74) 
are seen between about 480 and 520 nm, superimposed on the continuum (cf. (URL 
https://www.wis-tns.org/object/2026noc/classification-cert).  They classify
this variable as a classical "Fe II" nova.
     E. Kazarovets (Institute of Astronomy, Moscow) informs the Bureau that
the permanent GCVS designation V419 Mus has been assigned to this nova.     

NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2026 CBAT
2026 May 26                      (CBET 5690)              Daniel W. E. Green