PHOEBE 2 is a Python package for modeling the observables of eclipsing star systems, but until now it has focused entirely on the forward model—that is, generating a synthetic model given fixed values of a large number of parameters describing the system and the observations. The inverse problem, obtaining orbital and stellar parameters given

We present here observations of the comet C/2017 U7 obtained in 2018 and 2019 using the red camera of Goodman High Throughput Spectrograph (GHTS) at SOAR telescope. This comet was discovered in 2017 and found to have an hyperbolic orbit. We obtained visible spectra covering the wavelength range of 0.5─0.9 µm and also images in the SDSS filter

In this work we present the analysis of the observations of Comet P/2019 LD2 (ATLAS) with the 10-m Gran Telescopio Canarias (GTC), La Palma, Spain. P/2019 LD2 (ATLAS, hereafter LD2), was discovered early June 2019 as a faint asteroidal object and later reported as the first known Jupiter trojan asteroid to display cometary activity. A closer

We present new transit observations of the hot Jupiter WASP-74 b (T eq ~ 1860 K) using the high-resolution spectrograph HARPS-N and the multi-colour simultaneous imager MuSCAT2. We refined the orbital properties of the planet and its host star and measured its obliquity for the first time. The measured sky-projected angle between the stellar spin