<p>In short, the answer is: yes.</p>
<p><a href="https://www.aanda.org/articles/aa/full_html/2022/01/aa42196-21/aa42196-21.html" rel="nofollow noreferrer">This paper</a> provides an example of direct measurement of the tidal deformation of  the close-in Jupiter WASP-103b whose quadrupole Love number turned out to be close to that of our own Jupiter.</p>
<p>Another example of the kind is provided in the above comment by Nilay Ghosh.</p>
<p>Also, from observation of the tidal decay of the close-in Jupoter WASP-12b, it was possible to evaluate the value of its quality function <span class="math-container">$K_2 = k_2/Q$</span>, which value has turned out to be remarkably close to that of our Jupiter, see <a href="https://www.mdpi.com/2218-1997/8/4/211" rel="nofollow noreferrer">this work</a>.</p>

CC BY-SA 4.0
2022-06-20T19:43:52.620Z
2022-06-20T22:06:59.807Z
2022-06-20T22:06:59.807Z
Michael_1812
<p>I understand that Love number is the ratio between the tide raising potential to the actual deformation of the body, however, I'm not sure if there are ways to detect the Love number from observations outside our solar system. If there are ways, I would like to know the basic theory behind it.</p>

CC BY-SA 4.0
2021-11-15T03:26:09.597Z
Why not? https://www.aanda.org/articles/aa/abs/2018/07/aa31775-17/aa31775-17.html .... https://www.aanda.org/articles/aa/abs/2019/03/aa34376-18/aa34376-18.html
Nilay Ghosh
<observational-astronomy><exoplanet><tidal-forces>
Can we measure planetary Love number of exoplanets?
ValientProcess
# Can we measure planetary Love number of exoplanets?

(Asked by: username_0 on 2021-11-14)

I understand that Love number is the ratio between the tide raising potential to the actual deformation of the body, however, I'm not sure if there are ways to detect the Love number from observations outside our solar system. If there are ways, I would like to know the basic theory behind it.

**Tags:** observational-astronomy, exoplanet, tidal-forces
> **Comments:**
> **username_1**: Why not? https://www.aanda.org/articles/aa/abs/2018/07/aa31775-17/aa31775-17.html .... https://www.aanda.org/articles/aa/abs/2019/03/aa34376-18/aa34376-18.html  

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## 1 answers

### Answer by username_2 on 2022-06-20. Score: 4

In short, the answer is: yes.

[This paper](https://www.aanda.org/articles/aa/full_html/2022/01/aa42196-21/aa42196-21.html) provides an example of direct measurement of the tidal deformation of the close-in Jupiter WASP-103b whose quadrupole Love number turned out to be close to that of our own Jupiter.

Another example of the kind is provided in the above comment by Nilay Ghosh.

Also, from observation of the tidal decay of the close-in Jupoter WASP-12b, it was possible to evaluate the value of its quality function $K\_2 = k\_2/Q$, which value has turned out to be remarkably close to that of our Jupiter, see [this work](https://www.mdpi.com/2218-1997/8/4/211).


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