exoclock

Gaia-2b (LOW)

Discovered by: Panahi et al. 2022

The Star
Simbad
GAIA
2MASS		 TYC 4123-515-1
DR2 1107980654748582144
J07225646+6715091
RA 07:22:56.4611 DEC +67:15:09.190
Parallax
4.751 mas		 P.M. RA
6.907 mas/y		 P.M. DEC
24.031 mas/y
MagV
11.28		 MagR*
10.969		 MagI*
10.534		 MagJ
10.128		 MagH
9.818		 MagK
9.742
MagG
11.197		 MagGBP
11.564		 MagGRP
10.7
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459726.265491 ± 9.7e-05 BJDTDB
Period
3.69153483 ± 8e-07 days
Transit Parameters
Panahi et al. 2022
Rp/Rs
0.1276 ± 0.0051		 a/Rs
8.67 +0.3 -0.3
 i
85.21 +0.25 -0.25 deg
e
-		 ω
- deg
DepthR*
18.16 mmag		 Duration*
2.83 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Panahi et al. 2022
Teff
5720.0 +84.0 -84.0 K
 Log(g)
4.387138832290847 +0.049904172471883654 -0.049904172471883654 cm/s2
 Fe/H
0.0 +0.0 0.0 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 78 (20)
O-C 0.39 ± 0.21 minutes
ExoClock Observations (Recent) 63 (20)
Space Observations (Recent) 14 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.12822 ± 0.00033

Gaia-2b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
Gaia-2b (LOW)
2025-12-19		Trevor Gainey
Kismet		Meade LX200
ZWO ASI 294 MC Pro / R / 120.0		-5.16 ± 3.31
Gaia-2b (LOW)
2025-12-12		Kohji Tsumura
Tokyo City University		Vixen VC200L
ZWO ASI 1600MM-PRO / R / 180.0		-1.9 ± 3.46
Gaia-2b (LOW)
2025-12-08		Tommaso Dittadi
TD-TRO		Ritchey-Chretien
Moravian G2-1600 / R / 90.0		3.6 ± 1.31
Gaia-2b (LOW)
2025-11-16		Alexey Garmash
Lyceum 130		SW Esprit 150ED
Atik 383L / I / 180.0		1.05 ± 1.87
Gaia-2b (LOW)
2025-10-18		David Molina
Anunak iObservatory		S/C
KAF 8300 / Clear / 180.0		0.02 ± 1.14
Gaia-2b (LOW)
2025-10-07		Alessandro Marchini
Astronomical Observatory University of Siena		Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 180.0		3.33 ± 2.02
Gaia-2b (LOW)
2025-10-07		Maria Ponticelli
OPLA		Newtonian 200/1000
ATIK 414 / R / 60.0		-7.47 ± 2.45
Gaia-2b (LOW)
2025-09-25		John Savage
Rushay Farm Z42		Skywatcher Esprit 150
ZWO ASI 6200MM / Lum / 60.0		-2.14 ± 1.87
Gaia-2b (LOW)
2025-09-25		David Wright
Goveryk (private observatory)		Ritchey-Chretien
QSI 683WSG-8 / R / 200.0		-4.73 ± 3.46
Gaia-2b (LOW)
2025-04-23		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 45.0		-6.94 ± 6.62
Gaia-2b (LOW)
2025-04-20		Bryan Martin
Tiger Butte Observatory Remote		AG Optical IDK
ZWO ASI 294 / R / 120.0		-2.43 ± 3.46
Gaia-2b (LOW)
2025-03-18		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / R / 180.0		1.06 ± 0.99
Gaia-2b (LOW)
2025-03-18		Pieter Vuylsteke
TheGardenToTheSkyFacility		TS ONTC 25cm f4.7
QHY 268M / rpr / 60.0		1.06 ± 1.01
Gaia-2b (LOW)
2025-03-06		Pieter Vuylsteke
TheGardenToTheSkyFacility		TS ONTC 25cm f4.7
QHY 268M / rpr / 60.0		1.33 ± 1.09
Gaia-2b (LOW)
2025-03-06		Snaevarr Guðmundsson
Ness Observatory		Meade LX 200 ACF Schmidt-Cassegrain
SBIG STL 11000M / R / 75.0		-2.25 ± 0.89
Gaia-2b (LOW)
2025-02-23		Giovanni Calapai
Home Astronomical Observatory		Celestron 11 Schmidt-Cassegrain
Atik 314L+ / Clear / 90.0		0.12 ± 0.85
Gaia-2b (LOW)
2025-01-17		Xavier Bros
Anysllum		Newton Orion Optics 14" f4.6
ASI2600MM Pro / R / 94.0		-0.33 ± 1.38
Gaia-2b (LOW)
2025-01-17		Tommaso Dittadi
TD-TRO		Ritchey-Chretien
Moravian G2-1600 / R / 90.0		-0.46 ± 2.59
Gaia-2b (LOW)
2025-01-17		Esteban García N.
La Tórdiga, Cuenca		Sky-Watcher CF254
QHY 174M GPS / R / 113.0		-8.09 ± 4.9
Gaia-2b (LOW)
2025-01-17		Dominique DANIEL
La Montjoie		T250 Skyvision
Camera CMOS ZWO ASI2600MC pro (color) / Clear / 45.0		-8.09 ± 1.58
Gaia-2b (LOW)
2025-01-03		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / Lum / 177.0		-3.57 ± 1.12
Gaia-2b (LOW)
2024-12-30		Bryan Martin
Tiger Butte Observatory Remote		AG Optical IDK
ZWO ASI 294 / R / 120.0		1.52 ± 2.59
Gaia-2b (LOW)
2024-12-26		Stefano Lora
MarSEC		Ritchey Chrétien
Moravian G2 Mark II / R / 120.0		0.42 ± 1.87
Gaia-2b (LOW)
2024-11-19		Snaevarr Guðmundsson
Ness Observatory		Meade LX 200 ACF Schmidt-Cassegrain
SBIG STL 11000M / AstrodonExoPlanet-BB / 90.0		2.07 ± 1.58
Gaia-2b (LOW)
2024-10-25		Vojtěch Školník
Broumov NM Observatory		Meade LX90 ACF
MI C2-7000A / Clear / 90.0		2.9 ± 1.38
Gaia-2b (LOW)
2024-09-21		Üllar Kivila
Looga Observatory		TS Optics (GSO) 8" RC
Omegon veTEC 585 C / Clear / 150.0		0.36 ± 1.2
Gaia-2b (LOW)
2024-04-05		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-2.16 ± 2.3
Gaia-2b (LOW)
2024-03-24		Mark Salisbury
POST		Orion Optics ODK
SBIG ST-10 XME / R / 240.0		1.92 ± 0.78
Gaia-2b (LOW)
2024-03-13		Fabio Mortari
Hypatia Observatory		Ritchey Chretienne 250mm f/5.3
MORAVIAN C2-7000A / R / 150.0		4.62 ± 5.18
Gaia-2b (LOW)
2024-02-17		Robert Roth
TURMX Observatory		Planewave CDK17
Moravian C1x 61000 Pro / rpr / 120.0		0.23 ± 0.76
Gaia-2b (LOW)
2024-02-13		Bryan Martin
Tiger Butte Observatory Remote		AG Optical IDK
ZWO ASI 294 / R / 90.0		-5.2 ± 2.3
Gaia-2b (LOW)
2024-02-05		Snaevarr Guðmundsson
Ness Observatory		Meade LX 200 ACF Schmidt-Cassegrain
SBIG STL 11000M / AstrodonExoPlanet-BB / 45.0		3.67 ± 0.98
Gaia-2b (LOW)
2024-02-05		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		0.77 ± 0.75
Gaia-2b (LOW)
2024-01-25		Sacha Foschino
Observatoire des Baronnies Provençales		Planewave 430mm
SVO ASI 6200 MM Pro / R / 120.0		5.69 ± 1.12
Gaia-2b (LOW)
2024-01-11		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280/1850 (C11 with Starizona reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		0.12 ± 0.58
Gaia-2b (LOW)
2024-01-11		Franck Le Rhun
Peepoodo		Lacerta Fotonewton 200/800 (Pre 2021)
ZWO ASI1600MM COOL / Lum / 80.0		-0.86 ± 1.87
Gaia-2b (LOW)
2023-12-31		Gustavo Muler
Obs. Nazaret J47		lx 200
ST8 XME AO8 / R / 120.0		-0.38 ± 0.76
Gaia-2b (LOW)
2023-12-19		Simon Dawes
William James II		Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / Lum / 300.0		-7.76 ± 2.45
Gaia-2b (LOW)
2023-11-24		Robert Roth
TURMX Observatory		Planewave CDK17
Moravian C1x 61000 Pro / rpr / 120.0		1.01 ± 0.79
Gaia-2b (LOW)
2023-11-24		Lluis Ribe
Les Pedritxes		Celestron
Moravian G3 16200 / R / 120.0		-1.07 ± 1.73
Gaia-2b (LOW)
2023-10-07		christian PANTACCHINI
Observatoire de BENAYES		Skywhatcher Newton
SBIG STF-8300M / Clear / 60.0		0.44 ± 1.87
Gaia-2b (LOW)
2023-09-26		Alessandro Marchini
Astronomical Observatory University of Siena		Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 180.0		-0.56 ± 1.58
Gaia-2b (LOW)
2023-03-07		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		-3.6 ± 1.07
Gaia-2b (LOW)
2023-02-12		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 100.0		0.28 ± 0.78
Gaia-2b (LOW)
2023-02-12		Marc Serrau
A77 Dauban		Celestron 11
QHY268 Mono / rpr / 60.0		-1.03 ± 1.17
Gaia-2b (LOW)
2023-02-01		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 40.0		1.5 ± 2.16
Gaia-2b (LOW)
2023-02-01		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-1.81 ± 2.16
Gaia-2b (LOW)
2023-01-18		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 90.0		-0.0 ± 0.94
Gaia-2b (LOW)
2022-12-26		Franky Dubois
Adonis		Newton
G2 1600 Moravian / R / 60.0		0.11 ± 0.82
Gaia-2b (LOW)
2022-12-26		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 60.0		-1.38 ± 0.98
Gaia-2b (LOW)
2022-12-26		Pieter Vuylsteke
TheGardenToTheSkyFacility		TS ONTC 25cm f4.7
QHY 268M / rpr / 120.0		-3.59 ± 1.18
Gaia-2b (LOW)
2022-12-26		Trevor Gainey
Kismet		Meade LX200
ZWO ASI 294 MC Pro / R / 60.0		-5.2 ± 2.3
Gaia-2b (LOW)
2022-12-15		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		0.8 ± 1.01
Gaia-2b (LOW)
2022-12-01		Miguel Ángel Álava Amat
Sarriguren		Meade SC 8"
Asi 1600 MM / Lum / 180.0		1.34 ± 2.3
Gaia-2b (LOW)
2022-12-01		Mark van der Grijp
Trevinca Observatory		William Optics FLT132
ZWO ASI2600mm Pro / Lum / 25.0		0.34 ± 1.58
Gaia-2b (LOW)
2022-11-27		Andre Kovacs
Madrona Peak Observatory		RC Optical 24"
Apogee KAF-16803 CCD / R / 40.0		-0.94 ± 0.58
Gaia-2b (LOW)
2022-11-19		Thomas Mollier
Tomastro		Newtonian
ZWO ASI1600MMC / Clear / 60.0		4.66 ± 2.59
Gaia-2b (LOW)
2022-11-08		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		1.64 ± 1.73
Gaia-2b (LOW)
2022-11-08		Antonio Ferretti
Anxanum Observatory		Meade LX200 ACF
QHY 268M / R / 60.0		0.35 ± 2.3
Gaia-2b (LOW)
2022-10-28		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-0.22 ± 2.59
Gaia-2b (LOW)
2022-10-25		Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)		Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0		-1.04 ± 1.73
Gaia-2b (LOW)
2022-10-25		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 60.0		-2.58 ± 1.24
Gaia-2b (LOW)
2022-10-25		Simon Dawes
William James II Observatory		Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / R / 150.0		-3.05 ± 2.88

Space Observations
Planet
Observation Date		 Mission O-C
minutes
Gaia-2b (LOW)
2023-12-31		TESS0.48 ± 0.58
Gaia-2b (LOW)
2023-12-19		TESS0.62 ± 0.6
Gaia-2b (LOW)
2023-12-16		TESS1.2 ± 0.59
Gaia-2b (LOW)
2023-12-12		TESS0.33 ± 0.62
Gaia-2b (LOW)
2023-01-14		TESS-0.11 ± 0.52
Gaia-2b (LOW)
2023-01-03		TESS0.53 ± 0.65
Gaia-2b (LOW)
2022-12-30		TESS-0.38 ± 0.53
Gaia-2b (LOW)
2022-12-26		TESS-0.69 ± 0.58
Gaia-2b (LOW)
2022-01-24		TESS0.31 ± 0.65
Gaia-2b (LOW)
2022-01-21		TESS-0.24 ± 0.62
Gaia-2b (LOW)
2022-01-17		TESS0.31 ± 0.66
Gaia-2b (LOW)
2022-01-10		TESS-0.12 ± 0.69
Gaia-2b (LOW)
2022-01-06		TESS0.54 ± 0.56
Gaia-2b (LOW)
2022-01-02		TESS0.59 ± 0.6

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2019-12-26 Panahi et al. 2022 0.12 ± 0.27
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