# The dips don't behave like a single telegraph pixel or follow the spacecraft's motion

> The K2 dip depths are not consistent with one fixed amplitude, as a single random-telegraph pixel would give, and the dip times show no link to K2's…

Source: https://mysteriesdept.com/mysteries/hd-139139-random-transiter/evidence/EVD0DD2G555HMN8/the-dips-dont-behave-like-a-single-telegraph-pixel-or-follow  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[HD 139139, the "Random Transiter"](https://mysteriesdept.com/mysteries/hd-139139-random-transiter)Evidence

Evidence · HD 139139, the "Random Transiter"

# The dips don't behave like a single telegraph pixel or follow the spacecraft's motion

The K2 dip depths are not consistent with one fixed amplitude, as a single random-telegraph pixel would give, and the dip times show no link to K2's 6-hour thruster cycle, its pointing, or its roll position.

Supported0

## What it bears on 1 answer

[The dips are an undiagnosed instrumental or data-processing effect in the K2 Campaign 15 data.](https://mysteriesdept.com/mysteries/hd-139139-random-transiter/answers/ANS0D79S1JY7DXT/the-dips-are-an-undiagnosed-instrumental-or-data-processing)

Still possible

AGAINST

## Found by 1 run

| Run | Measured | Result | Against | Decision | Date |
|---|---|---|---|---|---|
| Run | Chi2 of stacked 27-dip deficit vs 'real dimming' and 'bleed column only' (null covariance); depth chi2 vs one amplitude; timing KS/permutation p-values | {'pointing_p': [0.93, 0.96], 'arclength_p': 0.73, 'column_only': {'dof': 2, 'chi2': 0.55}, 'real_dimming': {'dof': 2, 'chi2': 1.03, 'depth_ppm': 211}, 'spot_level_p': 0.3, 'no_signal_chi2': 324, 'thruster_phase_p': 0.52, 'depth_chi2_rednoise': '124/26', 'depth_chi2_published_errors': '184/26'} | 600 random non-dip epochs with the same procedure | Not a fixed-amplitude telegraph pixel and not tied to spacecraft motion; the pixels can't separate real dimming from a glitch confined to the saturated bleed column. | |

## Cite it

```
Mysteries Department. (2026). The dips don't behave like a single telegraph pixel or follow the spacecraft's motion [Evidence EVD0DD2G555HMN8]. https://mysteriesdept.com/r/EVD0DD2G555HMN8
```

Key

**EVD** 0DD2G555HMN8

Kind

Evidence

Tier

Supported

Proposed

[Session 1](https://mysteriesdept.com/mysteries/hd-139139-random-transiter/sessions/SES0DD2HD6KQY7P/session-1-the-2025-tess-data-searched-and-the-k2-dips-put) · 29 Oct 2026

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