4 Summer Novae

Some of us still remember the years 2020 and 2021, when we had the opportunity to observe several bright novae in the northern sky one after another. In order of their discovery dates: V1361 Cyg, V1112 Per, V1405 Cas, V1674 Her, V606 Vul, with the recurrent nova RS Oph bringing this remarkable sequence to a climax.

In the summer of 2026, four readily observable novae appeared within a single season of the year. Their basic properties are summarised in Table 1. Figure 1 illustrates the diversity of their light curves. The traditional way of classifying novae according to the MMRD (Maximum Magnitude Rate of Decline) is illustrated by marking the T2 times — that is, the time required for the nova to fade by 2 magnitudes from maximum brightness. The limitations of this approach are evident in V1452 Tau, which reached maximum brightness three, or perhaps even four, times.

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Andalusia 4

04.02.2026 – 07.03.2026

Preparation of the hosting project in-situ. List of performed activities:

  • Accommodation in the rented house
  • Mobile internet
  • Negotiations with the providers LOPEMAR CostaSol S.L., ESPARTERO BUILDING & SERVICES SL, Electricidad SANDEZ, gestor Antonio Barragan, CADE agency – Andres Guerra
  • First visual estimates from Piconcillo with 12″ Dobsonian
  • Aesthetic astrophoto
  • Panoramatic image from the hosting site -> horizont for Stellarium

https://photos.app.goo.gl/sdW9vanGfuJhtfjWA

Variable stars in 2025

­The planned outburst of the recurrent nova T CrB has still not occurred. There are, however, plenty of interesting phenomena in the sky and likewise many activities by the members of the common Section of Variable Stars and Exoplanets of the Slovak Astronomical Society at the Slovak Academy of Sciences and the Slovak Astronomical Union (hereafter the Section). As usual, I will divide the report into a part dealing with events in the sky and a part summarizing the efforts of astronomers on Earth to understand what the signals from the Universe are telling us.

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