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Nova Her 2021 = V1674 Her = TCP J18573095+1653396 (June 14, 2021)
Nova Her 2021 = V1674 Her was initially discovered on 2021 Jun 12.537 UT by Seiji Ueda (TCP J18573095+1653396), (CBET 4976), though data from the All-Sky Automated Survey for Supernovae (ASAS-SN) revealed an earlier detection, on June 12.1903 UT (ATel #14710). Munari, Valisa and Dallaporta spectroscopically classified the new source as a nova close to naked-eye brightness (ATel #14704), while Wagner et al. (ATel #14746) determined it to be a neon nova.

Spectroscopic observations, published in The Astronomer's Telegram:

ATel #14704
ATel #14710
ATel #14746
ATel #14747

Nova Herculis 2021 = V1674 Her
Image of Nova Herculis 2021 (center star), taken on 2021 Jun. 14 (0h01-1h03UT) with 19-cm, f/4 Flat-Field Camera and Canon EOS 700D (astro-modified). Exposure time was 51x60 seconds at ISO 1600. Total exposure time 51 minutes. FOV is 1.65o x 1.1o. Image scale is 4.7 arc sec/pixel. Copyright © 2021 H. Mikuz, Crni Vrh Observatory.

Nova Herculis 2021 = V1674 Her
Same image as above with enlarged field of Nova Herculis 2021 (center star). Copyright © 2021 H. Mikuz, Crni Vrh Observatory.

Fireball with afterglow (April 3, 2021)
Fireball of April 3, 2021
It was recorded with all-sky camera at Črni Vrh Observatory on 2021 April 3, at 21h58UT. The fireball afterglow lasted 47 minutes. Copyright © 2021 by J. Vales and J. Skvarč, Črni Vrh Observatory.

Time-lapse animation.

Nova Cassiopeiae 2021 = V1405 Cassiopeiae = PNV J23244760+6111140 (March 22, 2021)
CBET 4945 report the discovery of apparent nova by Yuji Nakamura (Mie, Japan) on 2021-03-18.4236 UT (mag 9.6) on four 15-s CCD frames (limiting mag 12.0), taken on Mar. 18.424 UT with a 135-mm-f.l. f/4.0 lens. The new variable was posted on the Central Bureau's TOCP webpage under the designation PNV J23244760+6111140.

Spectroscopic observations, published in The Astronomer's Telegram:

ATel #14471
ATel #14472
ATel #14476
ATel #14478
ATel #14482
ATel #14471

Nova Cassiopeiae 2021 on Mar. 22
Image of Nova Cassiopeiae 2021 (center star), taken on 2021 Mar. 22 (4h28-4h45UT) with 19-cm, f/4 Flat-Field Camera and Canon EOS 700D (astro-modified). Exposure time was 15x60 seconds at ISO 1600. Total exposure time 15 minutes. FOV is 1.65o x 1.1o. Image scale is 4.7 arc sec/pixel. At top center is open cluster M52, while at right is the NGC 7635 (Bubble nebula). Copyright © 2021 H. Mikuz, Crni Vrh Observatory.

Nova Cassiopeiae 2021 on Mar. 24
Image of Nova Cassiopeiae 2021 (center star), taken on 2021 Mar. 24 (4h02-4h35UT) with 19-cm, f/4 Flat-Field Camera and Canon EOS 700D (astro-modified). Exposure time was 30x60 seconds at ISO 1600. Total exposure time 30 minutes. FOV is 1.65o x 1.1o. Image scale is 4.7 arc sec/pixel. At top center is open cluster M52, while at right is the NGC 7635 (Bubble nebula). Copyright © 2021 H. Mikuz, Crni Vrh Observatory.

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