Transit observations at the observatory in Grossschwabhausen: XO-1b and TrES-1

TL;DR

This paper presents transit observations of XO-1b and TrES-1, refining their orbital periods using IR photometry and existing transit data, thereby improving their ephemerides.

Contribution

It provides updated orbital periods and ephemerides for XO-1b and TrES-1 based on new IR photometry and existing data, enhancing transit timing accuracy.

Findings

Refined orbital period of XO-1b to 3.941497 days

Refined orbital period of TrES-1 to 3.0300737 days

Improved transit ephemerides for both exoplanets

Abstract

We report on observations of transit events of the transiting planets XO-1b and TrES-1 with the AIU Jena telescope in Grossschwabhausen. Based on our IR photometry (in March 2007) and available transit timings (SuperWASP, XO and TLC-project-data) we improved the orbital period of XO-1b (P = 3.941497$\pm$0.000006) and TrES-1 (P = 3.0300737$\pm$0.000006), respectively. The new ephemeris for the both systems are presented.