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Ursa Astronomical Association
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Ursa Astronomical Association

Exoplanet XO-2N b - 18.2.2018 at 19.36 - 18.2.2018 at 23.31 Kirkkonummi, Komakallio Observation number 70695

Visibility Unclassified

Samuli Vuorinen, Kirkkonummen komeetta

I had been using the Exoplanet Transit Database for a long time to make predictions about the fading of stars caused by exoplanets, and last night there was a clear weather and a suitable exoplanet at the same time. I photographed the XO-2N star for about four hours at the time of the predicted dimming, and subsequently analyzed the images with AstroImageJ software.

The star showed, as it did, a dimming of about 10 millimagnities at about the right time! I was still using the program to fit the model to the observations, which is shown in the pictures as a green curve.

All 627 data points are marked in the figure, as well as the averages of ten points, and a model fitted to the data.

Finally, Komakallio was able to join the Finnish observatories that observed exoplanets!

More similar observations
Additional information
  • Observation target
    • Exoplanet
  • Designation
    • XO-2N b
    • Luokittelematon
  • Constellation
    • Lynx
  • Brightness in magnitudes
    • 11.2
Technical information

TS Boren-Simon Powernewt 8 "f / 2.8, Atik 460EX, Astrodon L-filter, 627x7s exposures.

Comments: 2 pcs
Janne Kari - 19.2.2018 at 18.38 Report this


Matti Helin - 6.3.2018 at 15.33 Report this

Melkoinen havainto!

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