# Taylor 2023: Fitting the Light Curve of 1I/'Oumuamua with a Nonprincipal Axis Rotational Model and Outgassing Torques

> Aster G. Taylor, Darryl Z. Seligman, Olivier R. Hainaut et al., 2023. 2 records on Mysteries Department cite it. The current state of light-curve…

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

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# Fitting the Light Curve of 1I/'Oumuamua with a Nonprincipal Axis Rotational Model and Outgassing Torques

Aster G. Taylor, Darryl Z. Seligman, Olivier R. Hainaut et al., 2023. _The Planetary Science Journal_.

Extends Mashchenko's model with Sun-driven, time-varying outgassing torques and fits the October 2017 data with an average period of about 7.34 h. The best fit to October does not reproduce November, and the light curve is consistent with no secular change in angular momentum, which is in some tension with how comets spin up when they outgas. PSJ 4, 186.

**1I/'Oumuamua** Articledoi: **[10.3847/PSJ/acf617](https://doi.org/10.3847/PSJ/acf617)** Checked against the original0

## What it's used for here

The current state of light-curve modelling and its limits.

## The document 22 pages

[Pages][Text]Page 1 of 22

[![Page 1](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p1)1][![Page 2](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p2)2][![Page 3](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p3)3][![Page 4](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p4)4][![Page 5](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p5)5][![Page 6](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p6)6][![Page 7](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p7)7][![Page 8](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p8)8][![Page 9](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p9)9][![Page 10](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p10)10][![Page 11](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p11)11][![Page 12](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/p12)12]

![Page 1 of Fitting the Light Curve of 1I/'Oumuamua with a Nonprincipal Axis Rotational Model and Outgassing Torques](https://mysteriesdept.com/files/v/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a/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

[The light curve shows no secular change in spin, which is in tension with how outgassing comets spin up.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKC2B22PP3/the-light-curve-shows-no-secular-change-in-spin-which-is-in)

Evidence

EVD

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

The mystery article

MYS

## Cite it

```
Taylor, A. G., Seligman, D. Z., Hainaut, O. R., & Meech, K. J. (2023). Fitting the Light Curve of 1I/'Oumuamua with a Nonprincipal Axis Rotational Model and Outgassing Torques. The Planetary Science Journal. https://doi.org/10.3847/PSJ/acf617
```

[Read it free at doi.org](https://doi.org/10.3847/PSJ/acf617)[Download PDF · 4.9 MB](https://mysteriesdept.com/files/d/a7d7844fb5cb5c37e79a1a905b8fb5e3eae39740fa27b0c6df911c37d68aed1a)

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Key

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Kept

27 Oct 2026

Checked

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