Now’s the time to catch Nova Herculis 2021, before it fades from view.

…And then, there were two. Fresh off of the eruption of Nova Cassiopeiae 2021 early this year, another galactic nova made itself known earlier this past weekend, as a ‘new star’ or nova flirted with naked eye visibility in the constellation Hercules the Hero on its border with Aquila the Eagle.

The Discovery: The nova was discovered at +8th magnitude ‘with a bullet’ on the night of June 12th by astronomer Seiji Ueda from Hokkaido, Japan. The nova initially gained the telephone number-like monikers TCP J18573095+1653396 (denoting its position in the sky), and ZTF (Zwicky Transient Facility) 19aasfsjq (another alphabet soup designation), before getting the much more straightforward designation of Nova Herculis 2021, or simply N Her 2021. Just a few days ago, the American Association of Variable Star Observers (AAVSO) released the formal Alert Notice 745, notifying observers that a new bright northern hemisphere nova was indeed afoot.

The story thus far: This one came up fast, as Nova Her 2021 topped out at magnitude +5.5 on Sunday, June 13th, just a day after discovery. As of writing this, the nova has faded a bit but is still sitting at a respectable magnitude +9, worth hunting for with binoculars or a small telescope. Keep in mind, if history sets any precedent, Nova Her 2021 could well brighten again… and soon. Just look at how it flared and faded in this amazing sequence:

As imagens mostram a “nova” recém-descoberta e agora já oficialmente batizada como V1674 Herculis (V1674 Her). As imagens feitas em torno de 0H BRT nos dias 13, 14 e 15 mostram a nítida variação do brilho. Vem saber mais:#ObservatorioNacional #Nova #Constelação #[email protected] pic.twitter.com/IsUD7tTTaD

— Observatório Nacional (@Obs_Nacional) June 15, 2021

Nova Her 2021’s position in the sky: First, the good part: the region hosting Nova Her 2021 is currently rising to the east for northern hemisphere observers at sunset in mid-June. With the Moon waxing towards Full on June 24th, the time to catch Nova Her 2021 is tonight.

The nova’s position in the sky is:

Right Ascension 18 hours 57’ 31”

Declination +16 degrees north, 53’ 40”


The general field of view for Nova Her 2021 (centered on the Telrad finder). Credit: Stellarium/Dave Dickinson.

…and here’s a narrow, two degree wide finder chart:


N Her 2021 finder. Note that FF Aquilae is the brightest star in the field, just north of center. Credit: AAVSO.

The nova is very near (less than one degree away from) the +5.3 magnitude variable star FF Aquilae. Note that the famous ‘Coat-Hanger’ asterism is in the same general field of view:


Nova Herculis (marked) in the center of the field of view. Credit: Filipp Romanov

The nova’s position in the galaxy: Like extra-galactic supernovae seen in other galaxies, galactic novae tend to flare in a
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