# Hippke 2016: A Statistical Analysis of the Accuracy of the Digitized Magnitudes of Photometric Plates on the Time Scale of Decades with an Application to the Century-long Light Curve of KIC 8462852

> Michael Hippke, Daniel Angerhausen, Michael B. Lund et al., 2016. 10 records on Mysteries Department cite it. The main challenge to the century-long fade.

Source: https://mysteriesdept.com/sources/SRC0D8E6V860VNG/a-statistical-analysis-of-the-accuracy-of-the-digitized  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)Hippke 2016

**0**

# A Statistical Analysis of the Accuracy of the Digitized Magnitudes of Photometric Plates on the Time Scale of Decades with an Application to the Century-long Light Curve of KIC 8462852

Michael Hippke, Daniel Angerhausen, Michael B. Lund et al., 2016. _The Astrophysical Journal 825(1), 73_.

Measures the long-term stability of DASCH plate photometry: a median scatter of about 0.15 mag and systematics of up to about 0.2 mag per century for most constant stars. Concludes the claimed 0.16 mag per century fade of KIC 8462852 cannot be considered significant.

**Tabby's star (KIC 8462852)** Articledoi: **[10.3847/0004-637x/825/1/73](https://doi.org/10.3847/0004-637x/825/1/73)** Checked against the original0

## What it's used for here

The main challenge to the century-long fade.

## Cited by on this site 10 records

[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)

Answer

ANS

[Both halves of the Harvard record are flat and the offset between them is not shared by matched stars](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0DDYFA2QEREK/both-halves-of-the-harvard-record-are-flat-and-the-offset)

Evidence

EVD

[DASCH photometry has systematics of up to about 0.2 mag per century for most constant stars, so the trend is…](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E7HYR3BHP/dasch-photometry-has-systematics-of-up-to-about-0-2-mag-per)

Evidence

EVD

[Matched constant stars in DR7 scatter by 0.07 mag/century and share a +0.03 drift](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0DDYF91D8RN9/matched-constant-stars-in-dr7-scatter-by-0-07-mag-century)

Evidence

EVD

[The pre-1953 record is flat; the slope comes from the post-1969 offset](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0DDYF8MTYR79/the-pre-1953-record-is-flat-the-slope-comes-from-the-post)

Evidence

EVD

[Hippke and colleagues argue the plate fade is not significant](https://mysteriesdept.com/mysteries/tabbys-star/events/EVT0D8E750P4CZQ/hippke-and-colleagues-argue-the-plate-fade-is-not)

EVT

[Michael Hippke](https://mysteriesdept.com/mysteries/tabbys-star/people/FIG0D8E72TC7JNJ/michael-hippke)

FIG

[Matched-comparison century-slope test for DASCH light curves](https://mysteriesdept.com/methods/MTH0DDYEGKBWKWV/matched-comparison-century-slope-test-for-dasch-light-curves)

Method

MTH

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

The mystery article

MYS

[Did the star fade over the twentieth century?](https://mysteriesdept.com/mysteries/tabbys-star/questions/QST0D8E77702V2V/did-the-star-fade-over-the-twentieth-century)

Question

QST

## Cite it

```
Hippke, M., Angerhausen, D., Lund, M. B., Pepper, J., & Stassun, K. G. (2016). A Statistical Analysis of the Accuracy of the Digitized Magnitudes of Photometric Plates on the Time Scale of Decades with an Application to the Century-long Light Curve of KIC 8462852. The Astrophysical Journal 825(1), 73. https://doi.org/10.3847/0004-637x/825/1/73
```

[Read it free at doi.org](https://doi.org/10.3847/0004-637x/825/1/73)

Key

**SRC** 0D8E6V860VNG

Kind

Journal article

Rights

The publisher's

Kept

27 Oct 2026, for editors

Checked

Against the published article

Added by

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

The record

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