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Lunar swirls Reiner Gamma images
Lunar swirls are high-albedo irregular markings that are gene rally associated with prominent magnetic anomalies. The formation of swirls is still unknown. Near-infrared... -
Plage area composite series
Reconstructions of past irradiance variations require suitable data on solar activity. The longest direct proxy is the sunspot number, and it has been most widely employed for... -
Close encounters to the Sun in Gaia DR2
Passing stars may play an important role in the evolution of our solar system. We search for close stellar encounters to the Sun among all 7.2 million stars in Gaia DR2 that... -
Close encounters to the Sun in Gaia DR1
I report on close encounters of stars to the Sun found in the first Gaia data release (GDR1). Combining Gaia astrometry with radial velocities of around 320 000 stars drawn from... -
Horizontal temperature at Venus upper atmosphere
In this work, we analysed nadir observations of atmospheric infrared emissions carried out by VIRTIS, a high-resolution spectrometer on board the European spacecraft Venus... -
Astrometry of the Saturnian satellites 2004-12
The Cassini spacecraft has been orbiting Saturn since 2004 returning images of satellites with astrometric resolution as high as few hundreds of meters. The images that were... -
Close star encounters
Stars which pass close to the Sun can perturb the Oort cloud, injecting comets into the inner solar system where they may collide with the Earth. Using van Leeuwen's... -
Photometry of 16 Flora family asteroids
It is known that the Yarkovsky effect moves small asteroids to larger/smaller semimajor axes depending on their prograde/retrograde spins. The YORP effect influences asteroid... -
Lightcurves of Near-Earth Asteroid 162173 (1999 JU3)
Near-Earth asteroid (hereafter NEA) 162173 (1999 JU3) is a potential target of two asteroid sample return missions not only because of its accessibility but also because of the... -
La2010: orbital solution for long term Earth motion
We present here a new solution for the astronomical computation of the orbital motion of the Earth spanning from 0 to -250Myr. The main improvement with respect to our previous... -
Lunar ephemeris long-term development
The aim of this study is to develop new analytical series representing lunar coordinates to accuracy compatible with the accuracy of the modern numerical ephemeris of the Moon. -
Meteor streams detected among 502TV
In the first part of the paper a short review of the computer meteor stream searching techniques is given. Different fractions of the stream component obtained amongst radio,... -
Database of the orbital elements of comets
comets.dat is an ASCII file of cometary orbital elements prepared at the "Institut de Mecanique Celeste et de Calcul des Ephemerides" (related to the Bureau des Longitudes,... -
Cassini ISS astrometry of Saturnian satellites
We present numerically derived orbits and mass estimates for the inner Saturnian satellites, Atlas, Prometheus, Pandora, Janus, and Epimetheus from a fit to 2580 new Cassini...
