# Seligman 2023: Dark Comets? Unexpectedly Large Nongravitational Accelerations on a Sample of Small Asteroids

> Darryl Z. Seligman, Davide Farnocchia, Marco Micheli et al., 2023. 2 records on Mysteries Department cite it. The Solar System analogue for an…

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[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Seligman 2023

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# Dark Comets? Unexpectedly Large Nongravitational Accelerations on a Sample of Small Asteroids

Darryl Z. Seligman, Davide Farnocchia, Marco Micheli et al., 2023. _The Planetary Science Journal_.

Reports statistically significant non-gravitational accelerations, too large for the Yarkovsky effect, on six near-Earth asteroids with no visible activity (1998 KY26 among them), and attributes them to outgassing with no dust: a class the authors name dark comets. PSJ 4, 35.

**1I/'Oumuamua** Articledoi: **[10.3847/PSJ/acb697](https://doi.org/10.3847/PSJ/acb697)** Checked against the original0

## What it's used for here

The Solar System analogue for an accelerating body with no coma.

## The document 22 pages

[Pages][Text]Page 1 of 22

[![Page 1](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p1)1][![Page 2](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p2)2][![Page 3](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p3)3][![Page 4](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p4)4][![Page 5](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p5)5][![Page 6](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p6)6][![Page 7](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p7)7][![Page 8](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p8)8][![Page 9](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p9)9][![Page 10](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p10)10][![Page 11](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p11)11][![Page 12](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p12)12]

![Page 1 of Dark Comets? Unexpectedly Large Nongravitational Accelerations on a Sample of Small Asteroids](https://mysteriesdept.com/files/v/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a/p1)

The first 12 pages are shown; the rest are in the file. Text taken from the file. Check it against the page.

## Cited by on this site 2 records

[Dark comets show that accelerations without visible activity occur naturally.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCMD66SQC/dark-comets-show-that-accelerations-without-visible-activity)

Evidence

EVD

[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)

The mystery article

MYS

## Cite it

```
Seligman, D. Z., Farnocchia, D., Micheli, M., Vokrouhlický, D., Taylor, A. G., Chesley, S. R., Bergner, J. B., Vereš, P., Hainaut, O. R., & Meech, K. J. (2023). Dark Comets? Unexpectedly Large Nongravitational Accelerations on a Sample of Small Asteroids. The Planetary Science Journal. https://doi.org/10.3847/PSJ/acb697
```

[Read it free at doi.org](https://doi.org/10.3847/PSJ/acb697)[Download PDF · 1.5 MB](https://mysteriesdept.com/files/d/58f0ba8fbd261a495c3aef41f691e4af57a273e38a5c628c4d52a30837a7bb7a)

Anyone can read it here; members can download it.

Key

**SRC** 0CSKB8YJ3FHB

Kind

Journal article

Rights

CC-BY-4.0

Kept

27 Oct 2026

Checked

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The record

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