Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Detecting the Yarkovsky effect using the GAIA DR2 catalogue
View through CrossRef
The orbital motion of small bodies is affected by the Yarkovsky effect. First-time the effect was proposed by Yarkovsky in 1901 and then popularized by Öpik in 1950s. However, the first direct detection was only made in 2003 using radar observations. Nowadays there are hundreds of detections for NEAs and only a few for Main-Belt objects. In this work, I attempt to detect the Yarkovsky effect among multiple Main-Belt objects and other asteroids. I will show preliminary results for five asteroids using the OrbFit software.  OrbFit is a Fortran program for orbit propagation, ephemerides computation, orbit determination, close approach analysis, and impact monitoring. Orbits were calculated using FitObs with and without the Yarkovsky effect. Next, the ephemeris were computed for the times of GAIA observations and compared with the GAIA DR2 data.
Title: Detecting the Yarkovsky effect using the GAIA DR2 catalogue
Description:
The orbital motion of small bodies is affected by the Yarkovsky effect.
First-time the effect was proposed by Yarkovsky in 1901 and then popularized by Öpik in 1950s.
However, the first direct detection was only made in 2003 using radar observations.
Nowadays there are hundreds of detections for NEAs and only a few for Main-Belt objects.
In this work, I attempt to detect the Yarkovsky effect among multiple Main-Belt objects and other asteroids.
I will show preliminary results for five asteroids using the OrbFit software.
 OrbFit is a Fortran program for orbit propagation, ephemerides computation, orbit determination, close approach analysis, and impact monitoring.
Orbits were calculated using FitObs with and without the Yarkovsky effect.
Next, the ephemeris were computed for the times of GAIA observations and compared with the GAIA DR2 data.
Related Results
Yarkovsky drift detectability using the Gaia DR2 asteroid astrometry 
Yarkovsky drift detectability using the Gaia DR2 asteroid astrometry 
The orbital motion of small bodies is affected by the Yarkovsky effect (semiminor axes change in time (da/dt)). The first direct detection was only made in 2003 thanks to radar obs...
Stellar occultations by Near Earth Asteroids: challenges and results
Stellar occultations by Near Earth Asteroids: challenges and results
The observation of stellar occultation by asteroids is an intrinsically challenging activity in the case of Near Earth Objects, that produce very short events on narrow occultation...
Modelling thermal effects on eccentric asteroids: application to Didymos
Modelling thermal effects on eccentric asteroids: application to Didymos
The Hera mission, which will reach the Didymos system in December 2026, allows for a unique opportunity to study the thermal effects acting on a small body. Among these, the Yarkov...
Class II major histocompatibility complex restriction of human T cell responses to short ragweed allergen, Amb a V
Class II major histocompatibility complex restriction of human T cell responses to short ragweed allergen, Amb a V
AbstractAlthough T cells are known to play a crucial role in the induction of IgE synthesis, the class II major histocompatibility complex (MHC) restriction of aeroallergen‐induced...
Identification of asteroid families older than 2 billion years
Identification of asteroid families older than 2 billion years
Identification de familles d’astéroïdes âgées de plus de 2 milliards d’années
Actuellement, on recense peu de familles d’astéroïdes de la ceinture principale (Main ...
Searching for central stars of planetary nebulae in Gaia DR2
Searching for central stars of planetary nebulae in Gaia DR2
Context. Accurate distance measurements are fundamental to the study of planetary nebulae (PNe) but they have long been elusive. The most accurate and model-independent distance me...
Asteroids' satellites in Gaia astrometric data
Asteroids' satellites in Gaia astrometric data
It is known to the astronomical community that asteroids with satellites are not uncommon in the Solar System. So far we have more than 500 documented asteroid systems encompassing...
Gaia DR2 distances to Collinder 419 and NGC 2264 and new astrometric orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab
Gaia DR2 distances to Collinder 419 and NGC 2264 and new astrometric orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab
Context. On the one hand, the second data release of the Gaia mission (Gaia DR2) has opened a trove of astrometric and photometric data for Galactic clusters within a few kiloparse...