Masses of the main asteroid belt and the kuiper belt from the motions of planets and spacecraft

EV Pitjeva, NP Pitjev - Astronomy Letters, 2018 - Springer
Dynamicalmass estimates for the main asteroid belt and the trans-Neptunian Kuiper belt
have been found from their gravitational influence on the motion of planets. Discrete rotating …

Lower atmosphere and pressure evolution on Pluto from ground-based stellar occultations, 1988–2016

E Meza, B Sicardy, M Assafin, JL Ortiz… - Astronomy & …, 2019 - aanda.org
Context. The tenuous nitrogen (N 2) atmosphere on Pluto undergoes strong seasonal effects
due to high obliquity and orbital eccentricity, and has recently (July 2015) been observed by …

Mass of the Kuiper belt

EV Pitjeva, NP Pitjev - Celestial Mechanics and Dynamical Astronomy, 2018 - Springer
The Kuiper belt includes tens of thousand of large bodies and millions of smaller objects.
The main part of the belt objects is located in the annular zone between 39.4 and 47.8 au …

Astrometry with PRAIA

M Assafin - Planetary and Space Science, 2023 - Elsevier
PRAIA–Package for the Reduction of Astronomical Images Automatically–is a suite of
astrometric and photometric tasks designed to cope with huge amounts of heterogeneous …

Pluto's atmosphere from the 2015 June 29 ground-based stellar occultation at the time of the New Horizons flyby

B Sicardy, J Talbot, E Meza, JIB Camargo… - The Astrophysical …, 2016 - iopscience.iop.org
We present results from a multi-chord Pluto stellar occultation observed on 2015 June 29
from New Zealand and Australia. This occurred only two weeks before the NASA New …

Pluto's atmosphere from stellar occultations in 2012 and 2013

A Dias-Oliveira, B Sicardy, E Lellouch… - The Astrophysical …, 2015 - iopscience.iop.org
We analyze two multi-chord stellar occultations by Pluto that were observed on 2012 July
18th and 2013 May 4th, and respectively monitored from five and six sites. They provide a …

Observational constraints on planet nine: astrometry of pluto and other trans-neptunian objects

MJ Holman, MJ Payne - The Astronomical Journal, 2016 - iopscience.iop.org
We use astrometry of Pluto and other trans-neptunian objects to constrain the sky location,
distance, and mass of the possible additional planet (Planet Nine) hypothesized by Batygin …

PETREL19: a new numerical solution of planetary and lunar ephemeris

W Tian - Celestial Mechanics and Dynamical Astronomy, 2023 - Springer
The aim of this work is to develop a new numerical ephemeris of the Sun, the eight planets,
the Pluto and the Moon. We first construct a dynamical model, which consists of translational …

Stellar occultations by Trans-Neptunian objects: From predictions to observations and prospects for the future

JL Ortiz, B Sicardy, JIB Camargo, P Santos-Sanz… - The trans-Neptunian …, 2020 - Elsevier
In terms of scientific output, the best way to study solar system bodies is sending spacecraft
to make in situ measurements or to observe at close distance. Probably, the second best …

An astrometric approach to measuring the colour of an object

BF Guo, QY Peng, XQ Fang… - Monthly Notices of the …, 2023 - academic.oup.com
The colour of a star is a critical feature to reflect its physical property such as the
temperature. The colour index is usually obtained via absolute photometry, which is …