[vsnet-alert 28103] Re: T CrB: Possible onset of nova eruption

On 2025/09/05 8:27, Kojiguchi wrote:

T CrB: Possible onset of nova eruption

According to a report posted to the VSOLJ mailing list by Iijima-san in Asiago, Italy, T CrB was measured at about 7 mag as of 21:00 UT on September 4, suggesting that a nova eruption might have begun.

Further observations are strongly encouraged to confirm this report.

WebObs search in AAVSO, magnitude of T CrB were reported as

T CrB JD:2460923.40834 UT:2025 Sep.04.90834 mag:9.857 V (JD:2460923.40834 Sep.04.90834 -> around UT Sept04 21:48)

also

T CrB JD:2460923.36875 UT:2025 Sep.04.86875 mag:9.9 Vis (JD:2460923.36875 Sep.04.86875 -> around UT Sept04 20:51)

Noriaki