# DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is…

> DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is not significant.

Source: https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7HYR3BHP/dasch-photometry-has-systematics-of-up-to-about-0-2-mag-per  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)Evidence

Evidence · Tabby's star (KIC 8462852)

# DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is…

DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is not significant.

Suggestive0

## What it bears on 1 answer

[The century fade is a calibration artefact of plate photometry.](https://mysteriesdept.com/mysteries/tabbys-star/answers/ANS0D8E7HPY1BFW/the-century-fade-is-a-calibration-artefact-of-plate)

Disputed

FOR

## Cite it

```
Mysteries Department. (2026). DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is… [Evidence EVD0D8E7HYR3BHP]. https://mysteriesdept.com/r/EVD0D8E7HYR3BHP
```

Key

**EVD** 0D8E7HYR3BHP

Kind

Evidence

Tier

Suggestive

Version

1

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/EVD0D8E7HYR3BHP)