exoclock

TOI-2109b (LOW)

Discovered by: Wong et al. 2021

The Star
Simbad
GAIA
2MASS		 BD+16 3058
DR2 4558177980120149632
J16524472+1634478
RA 16:52:44.7202 DEC +16:34:47.839
Parallax
3.788 mas		 P.M. RA
-8.449 mas/y		 P.M. DEC
-9.257 mas/y
MagV
10.22		 MagR*
9.93		 MagI*
9.68		 MagJ
9.382		 MagH
9.129		 MagK
9.07
MagG
10.114		 MagGBP
10.364		 MagGRP
9.739
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459486.727696 ± 5.4e-05 BJDTDB
Period
0.67247371 ± 1.7e-07 days
Transit Parameters
Wong et al. 2021
Rp/Rs
0.08155 ± 0.00022		 a/Rs
2.268 +0.021 -0.021
 i
70.74 +0.37 -0.37 deg
e
-		 ω
- deg
DepthR*
7.28 mmag		 Duration*
1.92 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Wong et al. 2021
Teff
6540.0 +160.0 -160.0 K
 Log(g)
4.14 +0.04 -0.05 cm/s2
 Fe/H
0.068 +0.07 -0.062 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 6.64"
Total Observations (Recent) 107 (22)
O-C 1.97 ± 0.32 minutes
ExoClock Observations (Recent) 82 (22)
Space Observations (Recent) 22 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 3 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.08054 ± 0.00031

TOI-2109b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
TOI-2109b (LOW)
2025-07-22		Arushi Nath
Arushi Nath		12" Ritchey- Chretien Pro
ASI 2600 Mono Camera / R / 180.0		3.24 ± 2.16
TOI-2109b (LOW)
2025-07-20		Rodrigo Castillo
Rodrigo-Moro		Meade ACF-SC 10
Atik 383L+ Mono / Lum / 40.0		4.42 ± 7.2
TOI-2109b (LOW)
2025-07-18		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-1.45 ± 3.02
TOI-2109b (LOW)
2025-07-16		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		3.62 ± 2.59
TOI-2109b (LOW)
2025-06-28		Alvaro Fornas
MPC J57. Centro Astronómico Alto Turia		Meade LX200 Classic
Moravian G2 8300 / R / 120.0		1.55 ± 2.45
TOI-2109b (LOW)
2025-06-28		Patrick Farizy
Home Astronomical Observatory Cévennes alt 1230 m		Celestron 8 Schmidt-Cassegrain
ToupTek G3CMOS585C / Clear / 30.0		0.4 ± 3.6
TOI-2109b (LOW)
2025-06-26		Jordi González-Edo
Landete-Kea		C11
ASI 2600MM pro / Lum / 60.0		1.15 ± 1.73
TOI-2109b (LOW)
2025-06-23		Michael Irzyk
melun		C14
altair 2600 / AstrodonExoPlanet-BB / 60.0		3.2 ± 2.45
TOI-2109b (LOW)
2025-06-19		Alessandro Marchini
Astronomical Observatory University of Siena		Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 120.0		3.11 ± 2.02
TOI-2109b (LOW)
2025-06-19		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 60.0		1.82 ± 1.58
TOI-2109b (LOW)
2025-06-11		Ivo Peretto
MarSEC Marana Space Explorer Center		R-C
Moravia G2-1600 MkII / R / 120.0		3.96 ± 3.74
TOI-2109b (LOW)
2025-06-11		Nicoletta Iannascoli
OPLAT		Newton 200/1000
ATIK 414 / R / 20.0		3.67 ± 4.9
TOI-2109b (LOW)
2025-06-11		Tommaso Dittadi
TD-TRO		Ritchey-Chretien
Moravian G2-1600 / R / 90.0		2.37 ± 5.76
TOI-2109b (LOW)
2025-06-09		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		0.24 ± 2.3
TOI-2109b (LOW)
2025-06-07		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		6.9 ± 3.46
TOI-2109b (LOW)
2025-05-09		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / Lum / 79.0		-3.52 ± 4.61
TOI-2109b (LOW)
2025-05-03		Üllar Kivila
Looga Observatory		TS Optics (GSO) 8" RC
Omegon veTEC 585 C / Clear / 150.0		4.5 ± 3.74
TOI-2109b (LOW)
2025-04-21		Alexey Garmash
Lyceum 130		EdgeHD C11
ASI2600MM pro / rpr / 180.0		1.77 ± 1.04
TOI-2109b (LOW)
2025-04-17		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 45.0		7.87 ± 2.16
TOI-2109b (LOW)
2025-04-11		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280/1850 (C11 with Starizona reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		4.63 ± 1.08
TOI-2109b (LOW)
2025-04-08		Darryl Madison
Ajijic Observatory		Celestron CPC 800 Edge HD
ZWO2400MC / Clear / 60.0		7.23 ± 2.45
TOI-2109b (LOW)
2025-04-06		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / R / 60.0		6.44 ± 2.59
TOI-2109b (LOW)
2024-08-11		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / R / 60.0		7.58 ± 2.74
TOI-2109b (LOW)
2024-08-09		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 90.0		2.14 ± 2.59
TOI-2109b (LOW)
2024-08-01		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		2.4 ± 3.74
TOI-2109b (LOW)
2024-07-14		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-6.14 ± 3.17
TOI-2109b (LOW)
2024-07-12		samuel Diaz Lopez
Tomas Lopez (AstroCamp)		RC10
Atik16200M / V / 60.0		5.84 ± 2.45
TOI-2109b (LOW)
2024-07-12		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		2.53 ± 1.87
TOI-2109b (LOW)
2024-07-12		Alberto García Sánchez
Rio Cofio		MEADE LX200 Classic
SBIG ST8-XME / Clear / 60.0		-3.09 ± 1.58
TOI-2109b (LOW)
2024-07-07		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-2.02 ± 2.88
TOI-2109b (LOW)
2024-07-05		Deborah Smith
Complejo Astronomico Los Coloraos, Gorafe		Celestron C11
QHY9 / R / 45.0		-0.26 ± 2.3
TOI-2109b (LOW)
2024-06-27		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-0.28 ± 5.62
TOI-2109b (LOW)
2024-06-07		Giovanni Calapai
Home Astronomical Observatory		Celestron 11 Schmidt-Cassegrain
Atik 314L+ / I / 90.0		6.03 ± 1.73
TOI-2109b (LOW)
2024-06-02		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / R / 300.0		-1.54 ± 2.45
TOI-2109b (LOW)
2024-05-31		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 60.0		2.79 ± 1.22
TOI-2109b (LOW)
2024-05-29		samuel Diaz Lopez
Tomas Lopez (AstroCamp)		RC10
Atik16200M / V / 60.0		6.87 ± 2.45
TOI-2109b (LOW)
2024-05-29		Javier Flores Martín
CAHA		Multi Array of Combinate Telescope (MARCOT 1)
ZWO1600MM / V / 30.0		4.71 ± 1.87
TOI-2109b (LOW)
2024-05-29		Javier Flores Martín
CAHA		Multi Array of Combinate Telescope (MARCOT 3)
ZWO1600MM / R / 30.0		-0.33 ± 1.87
TOI-2109b (LOW)
2024-05-29		Javier Flores Martín
CAHA		Multi Array of Combinate Telescope (MARCOT 6)
ZWO1600MM / B / 30.0		-2.34 ± 2.88
TOI-2109b (LOW)
2024-05-27		samuel Diaz Lopez
Tomas Lopez (AstroCamp)		RC10
Atik16200M / V / 116.0		-2.17 ± 2.3
TOI-2109b (LOW)
2024-05-25		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 60.0		0.45 ± 4.75
TOI-2109b (LOW)
2024-05-05		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-1.73 ± 2.74
TOI-2109b (LOW)
2024-04-29		Riccardo Zancan
Riccardo		Celestron C11
ASI-1600-MM / R / 60.0		-6.1 ± 3.02
TOI-2109b (LOW)
2024-04-22		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / R / 60.0		2.92 ± 3.74
TOI-2109b (LOW)
2024-04-02		Antelm Ginard
Teide Observatory		IAC80
CARONTE / R / 70.0		0.88 ± 1.87
TOI-2109b (LOW)
2024-03-25		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-3.61 ± 1.87
TOI-2109b (LOW)
2024-03-23		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / V / 60.0		0.46 ± 1.44
TOI-2109b (LOW)
2023-08-22		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		-0.02 ± 5.33
TOI-2109b (LOW)
2023-08-18		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 30.0		0.04 ± 4.61
TOI-2109b (LOW)
2023-07-16		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 20.0		4.37 ± 3.89
TOI-2109b (LOW)
2023-06-26		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 40.0		0.75 ± 2.16
TOI-2109b (LOW)
2023-06-26		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 20.0		-1.7 ± 3.02
TOI-2109b (LOW)
2023-06-24		David Quiles
David Quiles Observatory		Celestron EDGEHD 800
Omegon veTEC 571M / R / 60.0		-0.8 ± 2.45
TOI-2109b (LOW)
2023-06-24		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 35.0		-0.95 ± 2.02
TOI-2109b (LOW)
2023-06-22		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 20.0		3.84 ± 1.73
TOI-2109b (LOW)
2023-06-22		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 35.0		2.06 ± 0.94
TOI-2109b (LOW)
2023-06-22		Tobias Gesser
TURMX Observatory		CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / rpr / 60.0		-3.22 ± 1.87
TOI-2109b (LOW)
2023-06-19		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 20.0		2.57 ± 1.87
TOI-2109b (LOW)
2023-06-17		Javier Alonso Santiago
INAF-OACT		SC
Moravian C4 / R / 90.0		4.33 ± 2.3
TOI-2109b (LOW)
2023-06-17		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 40.0		2.76 ± 0.94
TOI-2109b (LOW)
2023-06-17		Livia Moretti
Leavitt Observatory		Ritchey-Chrétien 10'' f/8
QHY268 / R / 100.0		2.03 ± 2.16
TOI-2109b (LOW)
2023-06-15		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / rpr / 180.0		0.62 ± 3.02
TOI-2109b (LOW)
2023-06-13		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 30.0		0.3 ± 0.95
TOI-2109b (LOW)
2023-06-11		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 25.0		-1.47 ± 1.14
TOI-2109b (LOW)
2023-05-30		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 30.0		-2.43 ± 1.3
TOI-2109b (LOW)
2023-05-26		Gustavo Muler
Obs. Nazaret		lx 200
ST8 XME AO8 / R / 120.0		-0.34 ± 1.37
TOI-2109b (LOW)
2023-05-16		Kevin Johnson
Holbrook Observatory		Meade LX50 10"
Atik 383L+ / R / 60.0		0.89 ± 2.02
TOI-2109b (LOW)
2023-05-16		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / R / 300.0		0.03 ± 3.6
TOI-2109b (LOW)
2023-04-17		Enrique Arce
Vallbona Observatory		Newton 10" f4
Sbig ST7-XME / V / 120.0		-2.47 ± 2.74
TOI-2109b (LOW)
2023-04-15		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 25.0		-2.23 ± 0.99
TOI-2109b (LOW)
2023-04-09		Eric Miny
BLOIS SOLOGNE ASTRONOMIE OBSERVATORY		Newton T305
QSI 683WS / R / 120.0		4.71 ± 4.61
TOI-2109b (LOW)
2023-04-07		Andre Kovacs
Moletai Astronomical Observatory (MAO)		35/51 cm Maksutov f/3.5
Apogee Alta U47 / R / 30.0		-0.73 ± 5.18
TOI-2109b (LOW)
2023-04-07		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 90.0		-0.87 ± 1.58
TOI-2109b (LOW)
2023-04-07		Kevin Johnson
Holbrook Observatory		Meade LX50 10"
Atik 383L+ / R / 60.0		-2.46 ± 2.16
TOI-2109b (LOW)
2023-04-04		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 90.0		0.02 ± 2.74
TOI-2109b (LOW)
2023-03-15		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 45.0		2.3 ± 2.02
TOI-2109b (LOW)
2023-03-15		Robert Roth
TURMX Observatory		CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / rpr / 60.0		0.29 ± 1.73
TOI-2109b (LOW)
2023-02-10		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 30.0		0.74 ± 3.31
TOI-2109b (LOW)
2021-06-12		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH4 z / zpr / 5.0		0.28 ± 0.53
TOI-2109b (LOW)
2021-06-12		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH1 g / gpr / 6.0		0.09 ± 0.52
TOI-2109b (LOW)
2021-06-12		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B - CH2 r / rpr / 5.0		0.09 ± 0.42
TOI-2109b (LOW)
2021-06-12		MUSCAT Team
Teide Observatory		Telescope Carlos Sanchez
MuSCAT2 - PIXIS: 1024B eXcelon - CH3 i / ipr / 10.0		-0.01 ± 0.48

Space Observations
Planet
Observation Date		 Mission O-C
minutes
TOI-2109b (LOW)
2022-06-12		TESS0.98 ± 0.82
TOI-2109b (LOW)
2022-06-11		TESS0.16 ± 0.58
TOI-2109b (LOW)
2022-06-11		TESS-0.19 ± 0.63
TOI-2109b (LOW)
2022-06-10		TESS0.64 ± 0.72
TOI-2109b (LOW)
2022-06-09		TESS-0.41 ± 0.65
TOI-2109b (LOW)
2022-06-09		TESS-0.75 ± 0.78
TOI-2109b (LOW)
2022-06-08		TESS0.1 ± 0.76
TOI-2109b (LOW)
2022-06-07		TESS0.77 ± 0.75
TOI-2109b (LOW)
2022-06-07		TESS0.53 ± 0.69
TOI-2109b (LOW)
2022-06-02		TESS-1.09 ± 0.85
TOI-2109b (LOW)
2022-06-01		TESS-0.43 ± 0.78
TOI-2109b (LOW)
2022-05-30		TESS-0.08 ± 0.63
TOI-2109b (LOW)
2022-05-29		TESS-1.27 ± 0.66
TOI-2109b (LOW)
2022-05-29		TESS0.03 ± 0.75
TOI-2109b (LOW)
2022-05-28		TESS-0.52 ± 0.56
TOI-2109b (LOW)
2022-05-27		TESS0.09 ± 0.73
TOI-2109b (LOW)
2022-05-27		TESS-0.72 ± 0.69
TOI-2109b (LOW)
2022-05-26		TESS0.16 ± 0.81
TOI-2109b (LOW)
2022-05-25		TESS0.17 ± 0.76
TOI-2109b (LOW)
2022-05-20		TESS-0.6 ± 0.72
TOI-2109b (LOW)
2022-05-19		TESS0.63 ± 0.86
TOI-2109b (LOW)
2022-05-19		TESS-0.18 ± 0.75

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2021-06-26 Wong et al. 2021 -0.29 ± 0.14
2021-06-12 Wong et al. 2021 0.17 ± 0.24
2021-05-24 Wong et al. 2021 0.19 ± 0.12
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