2022ApJ...940L..39P

Query : 2022ApJ...940L..39P

2022ApJ...940L..39P - Astrophys. J., 940, L39 (2022/December-1)

A 16 hr Transit of Kepler-167 e Observed by the Ground-based Unistellar Telescope Network.

PERROCHEAU A., ESPOSITO T.M., DALBA P.A., MARCHIS F., AVSAR A.M., CARRERA E., DOUEZY M., FUKUI K., GAMUROT R., GOTO T., GUILLET B., KUOSSARI P., LAUGIER J.-M., LEWIN P., LOOSE M.A., MANGANESE L., MIRWALD B., MOUNTZ H., MOUNTZ M., OSTREM C., PARKER B., PICARD P., PRIMM M., RANDOLPH J., RUNGE J., SAVONNET R., SHARON C.E., SHIH J., SHIMIZU M., SILVIS G., SIMARD G., SIMPSON A., SIVAYOGAN T., STEIN M., TRUDEL D., TSUCHIYAMA H., WAGNER K. and WILL S.

Abstract (from CDS):

More than 5000 exoplanets have been confirmed and among them almost 4000 were discovered by the transit method. However, few transiting exoplanets have an orbital period greater than 100 days. Here we report a transit detection of Kepler-167 e, a “Jupiter analog” exoplanet orbiting a K4 star with a period of 1071 days, using the Unistellar ground-based telescope network. From 2021 November 18 to 20, citizen astronomers located in nine different countries gathered 43 observations, covering the 16 hr long transit. Using a nested sampling approach to combine and fit the observations, we detected the midtransit time to be UTC 2021 November 19 17:20:51 with a 1σ uncertainty of 9.8 minutes, making it the longest-period planet to ever have its transit detected from the ground. This is the fourth transit detection of Kepler-167 e, but the first made from the ground. This timing measurement refines the orbit and keeps the ephemeris up to date without requiring space telescopes. Observations like this demonstrate the capabilities of coordinated networks of small telescopes to identify and characterize planets with long orbital periods.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanets - Transits - Amateur astronomers - Exoplanet detection methods - Transit photometry - Astronomy data analysis - Observatories - Light curves - Optical telescopes - Observational astronomy - Astronomy education - Astronomy data modeling

Simbad objects: 7

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Number of rows : 7
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 BD+10 1799f Pl 08 26 27.8490900672 +10 04 49.334175156           ~ 50 0
2 HD 80606b Pl 09 22 37.5768032712 +50 36 13.435326684           ~ 369 1
3 WASP-148b Pl 16 56 31.3396591416 +44 18 09.548648496           ~ 24 0
4 HD 238894b Pl 18 31 46.4908252896 +56 39 03.067073316           ~ 17 0
5 Kepler-167 Er* 19 30 38.0261896920 +38 20 43.437246900   15.255 14.284 13.989   K3 98 0
6 Kepler-167e Pl 19 30 38.0261896920 +38 20 43.437246900           ~ 45 0
7 Gaia DR3 2051932862036924416 * 19 30 40.3062029592 +38 19 34.139555283           ~ 1 0

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