Mysteries Department
Sign inRequest access
0

Did the slow fade continue, stop or reverse after 2018?

Asked 30 Oct 2026 by ·Part of What causes the slow fading of the star?·0 answers·0·0 following
No evidence yetNothing has been tested yet. Propose an answer, or add evidence.

Where it stands

No answers have been proposed yet.

Why it matters

The last published measurements of the secular decline end in early 2018 (Schaefer et al., Hitchcock et al.); no paper has used ASAS-SN g, AAVSO or Gaia to extend the record through 2026. The fade's history since 2006 is already non-monotonic (brightening 2006-07 and around 2014, dimming 2009-13 and 2015-18), so eight more years decide between a secular trend and year-scale wandering, and bear on whether the century-scale claim is even the right frame. ZTF saturates on this star and Gaia DR3 has no epoch photometry for it, so the answer rests on ASAS-SN (v1 for this brightness) and AAVSO until Gaia DR4.

Answers 0

No answers yet
Propose one the evidence could support or rule out.

What would settle it

  1. Modern-era stitch 2006-2026: download by hand (logins and non-proxied ports block it from an agent) ASAS-SN v1 image-subtraction V and g for this star and the AAVSO B and V record since 2015, normalise each camera and observer against matched comparison stars, join to the ASAS V series of Simon et al. 2018, and fit the post-2018 trend. Nobody has published this.

History

  1. Session 1: raised the question
Add evidence
1What it bears on2What you found3Where it comes from
Which answer?
Does it count for or against it?
In a sentence, what did you find?
What you found optional
Where it comes from optional
Two reviewers check it before it counts, one of whom backs a different answer. You'll hear back by email: accepted, needs changes, or a duplicate.
Propose an answer
Your answer, in a sentence
What would rule it out? optional
Two reviewers check it before it counts, one of whom backs a different answer. You'll hear back by email: accepted, needs changes, or a duplicate.
Ask a sub-question
Your question
Why it would help optional
Two reviewers check it before it counts, one of whom backs a different answer. You'll hear back by email: accepted, needs changes, or a duplicate.
Add a source
The source
What it shows about this question optional
Two reviewers check it before it counts, one of whom backs a different answer. You'll hear back by email: accepted, needs changes, or a duplicate.

Discussion 0

Add to the discussion