2021JAVSO..49..186M

Query : 2021JAVSO..49..186M

2021JAVSO..49..186M - J. Am. Assoc. Variable star obs., 49, 186 (2021)

25 New Light Curves and Updated Ephemeris through Analysis of Exoplanet WASP-50 b with EXOTIC.

MIZRACHI R., LY D., BEWERSDORFF L. and TOCK K.

Abstract (from CDS):

EXOplanet Transit Interpretation Code (EXOTIC) was used to reduce 75 sets of time-series images of WASP-50 taken by the 6-inch telescope of the Center for Astrophysics | Harvard & Smithsonian MicroObservatory. Of these sets, 25 resulted in clean light curves showing the transit of WASP-50 b, 22 of which had sufficiently low uncertainty to qualify for use in an ephemeris update. We used these results to establish planetary parameters and update WASP-50 b's mid-transit time from 2455558.61237 ± 0.0002 to 2456295.68245 ± 0.00085 (BJD_TDB) and its period from 1.9551 ± 5-06 to 1.95509584 ± 0.00000106 d. The mid-transit time uncertainty of WASP-50 b at the time of projected James Webb Telescope science operations (January 2022) is reduced by a factor of 4.0 using our new ephemeris. We also calculate the planetary size and semi-major axis of WASP-50 b to be approximately 83,200 km ± 2,230 km and 0.0294AU ± 0.0000233 AU, respectively.

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Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

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-50b Pl 02 54 45.1341750384 -10 53 53.025224640           ~ 46 1

Query : 2021JAVSO..49..186M

Basic data :
WASP-50b -- Extra-solar Planet
Other object types: otypes_help 		Pl (), Pl? (TOI,WASP)
ICRS coord. (ep=J2000) : 		02 54 45.1341750384 -10 53 53.025224640 (Optical) [ 0.0153 0.0135 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		02 52 20.2968121751 -11 06 01.944583684 [ 0.0153 0.0135 90 ]
Gal coord. (ep=J2000) : 		189.6793982302437 -56.7894037242839 [ 0.0153 0.0135 90 ]
Proper motions mas/yr : 		3.383 8.913 [0.020 0.017 90] A 2020yCat.1350....0G
Parallaxes (mas): 		5.4865 [0.0174] A 2020yCat.1350....0G
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Hierarchy : number of linked objects
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Identifiers (4) :
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NAME-IAU Maeping TOI-391.01 TOI-391b WASP-50b

References (46 between 1850 and 2026) (Total 46)
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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