2024RNAAS...8..223S

Query : 2024RNAAS...8..223S

2024RNAAS...8..223S - Research Notes of the AAS, 8, 223 (2024/September-0)

Revisiting WASP-19b's Orbital Evolution: New TESS Data and Apsidal Precession Analysis.

SHEN Z.

Abstract (from CDS):

Due to the ongoing debate of whether WASP19b is experiencing orbital decay or apsidal precession, I reexamine the orbital evolution of the hot Jupiter WASP-19b using new TESS data from sectors 09, 36, 62, and 63. My comprehensive analysis of transit and occultation timing variations compares models of constant period, orbital decay, and apsidal precession. Results show no significant preference between orbital decay and apsidal precession models. I find a period change rate of -1.40 ± 0.54 ms yr–1, slower than some previous studies but consistent with others. My apsidal precession analysis yields an eccentricity of 0.00178 and a precession rate of 0.036 deg day–1, differing from recent literature. These findings underscore the complexity of WASP-19b's orbital dynamics and the need for continued long-term monitoring.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Hot Jupiters - Exoplanets - Transit timing variation method

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 WASP-19b Pl 09 53 40.0765648584 -45 39 33.057187596           ~ 423 1

Query : 2024RNAAS...8..223S

Basic data :
WASP-19b -- Extra-solar Planet
Other object types: otypes_help 		Pl (), Pl? (TOI,WASP)
ICRS coord. (ep=J2000) : 		09 53 40.0765648584 -45 39 33.057187596 (Optical) [ 0.0067 0.0072 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		09 51 42.4191200106 -45 25 22.227403824 [ 0.0067 0.0072 90 ]
Gal coord. (ep=J2000) : 		273.4055160980654 +06.7759231506677 [ 0.0067 0.0072 90 ]
Proper motions mas/yr : 		-35.457 17.378 [0.009 0.009 90] A 2020yCat.1350....0G
Parallaxes (mas): 		3.7516 [0.009] A 2020yCat.1350....0G
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Identifiers (4) :
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NAME-IAU Banksia TOI-655.01 TOI-655b WASP-19b

References (423 between 1850 and 2026) (Total 423)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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