# Mashchenko 2019: Modelling the light curve of 'Oumuamua: evidence for torque and disc-like shape

> Sergey Mashchenko, 2019. 5 records on Mysteries Department cite it. The shape and torque modelling that later work builds on.

Source: https://mysteriesdept.com/sources/SRC0CSKB3TG7PPV/modelling-the-light-curve-of-oumuamua-evidence-for-torque  
Publisher: Mysteries Department  
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[Sources](https://mysteriesdept.com/sources)[1I/'Oumuamua](https://mysteriesdept.com/mysteries/oumuamua)Mashchenko 2019

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# Modelling the light curve of 'Oumuamua: evidence for torque and disc-like shape

Sergey Mashchenko, 2019. _Monthly Notices of the Royal Astronomical Society_.

The first physical light-curve inversion with optional torque. Best fits are a thin disc (1:6) and a thin cigar (1:8), both tumbling and both needing a torque of the size outgassing produces in Solar System comets. Argues from the depth of the minima that the disc is far more probable (91 per cent against 16 per cent). MNRAS 489, 3003-3021.

**1I/'Oumuamua** Articledoi: **[10.1093/mnras/stz2380](https://doi.org/10.1093/mnras/stz2380)** Checked against the original0

## What it's used for here

The shape and torque modelling that later work builds on.

## Cited by on this site 5 records

[A cigar of about 1:8 fits but is less probable than a disc (16 against 91 per cent) from the depth of the…](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCF1A2JMK/a-cigar-of-about-1-8-fits-but-is-less-probable-than-a-disc)

Evidence

EVD

[Light-curve models need a torque of the size outgassing produces in comets.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKC2385WCD/light-curve-models-need-a-torque-of-the-size-outgassing)

Evidence

EVD

[Physical light-curve modelling favours the disc.](https://mysteriesdept.com/mysteries/oumuamua/evidence/EVD0CSKCFRR0N78/physical-light-curve-modelling-favours-the-disc)

Evidence

EVD

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

The mystery article

MYS

[What shape was 'Oumuamua, and how did it spin?](https://mysteriesdept.com/mysteries/oumuamua/questions/QST0CSKBZWY4KE5/what-shape-was-oumuamua-and-how-did-it-spin)

Question

QST

## Cite it

```
Mashchenko, S. (2019). Modelling the light curve of 'Oumuamua: evidence for torque and disc-like shape. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/stz2380
```

[Read it free at doi.org](https://doi.org/10.1093/mnras/stz2380)

Key

**SRC** 0CSKB3TG7PPV

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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