T Coronae Borealis
Discussion
It has been a year since Brad Schaefer's article on the recurrent nova T Coronae Borealis was published in Sky & Telescope (Ref 1). His prediction, based on past flare ups, was for an eruption in 2024. It has not occurred yet but it is highly anticipated in the near future. I have been monitoring the star with Origin since July 19, 2024, and as you can see by the reference stars, there has essentially been no change. Note that the comparison star 2 (HD 143455) is out of the field of view in the July image. The latest observations by AAVSO contributors puts the visual magnitude between 10.0 and 10.5 (March 23, 2025). My estimate based on comparison stars 4 and 5, agrees well.
Logbook
- Date & Time: December 14, 2024, 6:30 am
- Location: Kempt Shore, Nova Scotia, Canada, 45°N
- Conditions: Partly cloudy, calm, -6°C
- Technical: 10-sec exposures, 10-min integration, battery power, no filter, no post-processing
References
- "Get Ready for a Nova's Bright Return," Brad Schaefer, Sky & Telescope Volume 147(3), March 2024, pp. 34-40.
- "Is T CrB rising?" Astronomy Volume 48(7), July 2020, p. 62.
- Observing Variable Stars, David H. Levy, Cambridge University Press, Cambridge, UK, 1989, pp. 68-69.
- "Stellar opposites: R and T Coronae Borealis," Sky & Telescope Volume 72(2), August 1986, p. 161.
- Burnham's Celestial Handbook: Volume Two, Robert Burnham, Jr., Dover Publications, Inc., New York, 1978, pp. 708-714.
Logbook
- Date & Time: July 19, 2024
- Location: Kempt Shore, Nova Scotia, Canada, 45°N
- Technical: 10-sec exposures, 10-min integration, no filter, no post-processing