exoclock

TOI-1728b (LOW)

Discovered by: Kanodia et al. 2020

The Star
Simbad
GAIA
2MASS		 UCAC4 774-029023
DR2 1094545653447816064
J08022653+6447489
RA 08:02:26.5503 DEC +64:47:48.931
Parallax
16.419 mas		 P.M. RA
104.078 mas/y		 P.M. DEC
52.919 mas/y
MagV
12.397		 MagR
11.915		 MagI*
10.711		 MagJ
9.642		 MagH
8.953		 MagK
8.803
MagG
11.729		 MagGBP
12.656		 MagGRP
10.8
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459485.69358 ± 0.00033 BJDTDB
Period
3.4914034 ± 2.9e-06 days
Transit Parameters
Kanodia et al. 2020
Rp/Rs
0.074 ± 0.002		 a/Rs
13.48 +0.2 -0.2
 i
88.31 +0.58 -0.4 deg
e
0.057 +0.054 -0.039
 ω
45.0 +104.0 -187.0 deg
DepthR*
7.1 mmag		 Duration*
1.91 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Kanodia et al. 2020
Teff
3975.0 +77.0 -77.0 K
 Log(g)
4.66 +0.02 -0.02 cm/s2
 Fe/H
0.25 +0.1 -0.1 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 11.14"
Total Observations (Recent) 72 (14)
O-C -2.35 ± 0.46 minutes
ExoClock Observations (Recent) 58 (14)
Space Observations (Recent) 14 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 0 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.06926 ± 0.00067

TOI-1728b


ExoClock Observations
Planet
Observation Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
TOI-1728b (LOW)
2026-01-26		Tommaso Dittadi
TD-TRO		Ritchey-Chretien
Moravian G2-1600 / R / 120.0		-1.18 ± 4.18
TOI-1728b (LOW)
2026-01-19		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 60.0		1.85 ± 2.74
TOI-1728b (LOW)
2026-01-19		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280/1850 (C11 with Starizona reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		0.34 ± 1.25
TOI-1728b (LOW)
2026-01-12		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 40.0		-1.35 ± 1.34
TOI-1728b (LOW)
2025-12-29		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 60.0		0.87 ± 2.59
TOI-1728b (LOW)
2025-12-15		Nikola Antonov
Meshtitsa		Sky-Watcher Explorer PDS
ASI 533MM Pro Mono CMOS / R / 40.0		-4.58 ± 2.59
TOI-1728b (LOW)
2025-12-08		Gerard Tartalo
Dark Energy Observatory		Ts RC8" Carbon
Player One Ares M (imx533M) / Clear / 120.0		-0.54 ± 2.02
TOI-1728b (LOW)
2025-12-08		Mercedes Correa
Sirius B		Meade
Moravian G2 1600 / R / 130.0		-1.4 ± 2.16
TOI-1728b (LOW)
2025-11-04		Xavier Bros
Anysllum		Newton Orion Optics 14" f4.6
ASI2600MM Pro / R / 120.0		-0.78 ± 2.74
TOI-1728b (LOW)
2025-11-04		Matthieu Bachschmidt
Gonachon		Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 90.0		-1.64 ± 1.73
TOI-1728b (LOW)
2025-04-25		Michael Nezel
Celle Observatory		CDK 14
QHY 268M / I / 60.0		-2.81 ± 2.02
TOI-1728b (LOW)
2025-04-12		Adrian Jones
Private Observatory (I64)		Meade ACF 30cm
QSI 583 / R / 100.0		-1.64 ± 2.88
TOI-1728b (LOW)
2025-03-08		Aziz Ettahar Kaeouach
High Atlas Observatory		Celestron C11 hd
Zwo asi 294 mm pro / R / 120.0		0.43 ± 2.16
TOI-1728b (LOW)
2025-03-08		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280/1850 (C11 with Starizona reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 240.0		-3.46 ± 1.87
TOI-1728b (LOW)
2025-02-15		David Quiles
David Quiles Observatory		Celestron EDGEHD 800
Omegon veTEC 571M / R / 180.0		-9.05 ± 3.17
TOI-1728b (LOW)
2024-11-12		Ivo Peretto
MarSEC Marana Space Explorer Center		R-C
Moravia G2-1600 MkII / R / 150.0		4.33 ± 4.61
TOI-1728b (LOW)
2024-11-12		Zlatko Orbanić
Explorer		Newton Truss 254mm F/3.8
Atik 414 Ex Mono / rpr / 100.0		3.61 ± 8.64
TOI-1728b (LOW)
2024-08-21		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 180.0		-8.37 ± 4.9
TOI-1728b (LOW)
2024-04-13		Dim Stouraitis
Galilaios		SCT
SXVF-H9 Starlight-Xpress / R / 100.0		-3.43 ± 2.3
TOI-1728b (LOW)
2024-04-13		Esteban Reina
Observatori de Masquefa		Meade LX200
ZWO ASI 294 MM Pro / Clear / 100.0		-7.47 ± 1.73
TOI-1728b (LOW)
2024-03-30		John Collins
JC_Wrexham		Meade LX200GPS
ASI-290m / rpr / 120.0		-0.68 ± 3.31
TOI-1728b (LOW)
2024-03-23		Xavier Bros
Anysllum		Newton Orion Optics 14" f4.6
ASI2600MM Pro / R / 120.0		-8.73 ± 1.73
TOI-1728b (LOW)
2024-02-14		Lee YuHsien
KMSH Observatory		C14HD
QSI-660 / V / 60.0		3.85 ± 6.62
TOI-1728b (LOW)
2024-02-04		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / R / 120.0		-2.76 ± 1.58
TOI-1728b (LOW)
2024-01-07		Gustavo Muler
Obs. Nazaret		lx 200
ST8 XME AO8 / R / 120.0		6.64 ± 4.03
TOI-1728b (LOW)
2023-08-17		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 200.0		7.99 ± 4.75
TOI-1728b (LOW)
2023-08-10		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 200.0		1.67 ± 2.45
TOI-1728b (LOW)
2023-04-02		Tõnis Eenmäe
Tartu Observatory		Planewave CDK 12.5
Apogee Alta U42 / R / 60.0		-2.33 ± 2.16
TOI-1728b (LOW)
2023-03-05		Fabio Mortari
Hypatia Observatory		Ritchey Chretienne 250mm f/5.3
MORAVIAN C2-7000A / R / 200.0		-4.88 ± 3.02
TOI-1728b (LOW)
2023-02-26		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0		2.9 ± 2.02
TOI-1728b (LOW)
2023-02-26		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 77.0		1.61 ± 2.59
TOI-1728b (LOW)
2023-02-26		David Arnot
OSO PIRATE		PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 55.0		-2.11 ± 1.35
TOI-1728b (LOW)
2023-02-19		Adam Popowicz
Otivar dome2		Newton 12" ASA
ASI ZWO 1600MM / R / 77.0		10.55 ± 4.75
TOI-1728b (LOW)
2023-02-19		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		1.88 ± 1.34
TOI-1728b (LOW)
2023-02-19		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / Clear / 120.0		1.11 ± 1.41
TOI-1728b (LOW)
2023-02-19		Mark Salisbury
POST		Orion Optics ODK
SBIG ST-10 XME / R / 240.0		-2.34 ± 1.32
TOI-1728b (LOW)
2023-02-19		Marc Serrau
A77 Dauban		Celestron 11
QHY268 Mono / Clear / 180.0		-5.58 ± 5.76
TOI-1728b (LOW)
2023-02-12		Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"		NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 35.0		-3.41 ± 2.16
TOI-1728b (LOW)
2022-11-21		Jean-Claude MARIO
Observatoire de la Cabergue		T 500 Cassegrain "Arp 83"
ASI 6200 MM / Clear / 180.0		7.79 ± 4.18
TOI-1728b (LOW)
2022-03-07		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		3.26 ± 2.59
TOI-1728b (LOW)
2022-03-07		Lorenzo Betti
Osservatorio Polifunzionale del Chianti		RC-80cm
Moravian G4 - KAF 09000 / R / 90.0		0.96 ± 1.3
TOI-1728b (LOW)
2022-02-28		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
FLI Kepler CMOS 4040 / Lum / 90.0		12.2 ± 1.15
TOI-1728b (LOW)
2022-02-28		Marc Bretton
Observatoire des Baronnies Provençales		Astelco 800mm
FLI PL230 / R / 120.0		2.98 ± 1.01
TOI-1728b (LOW)
2022-02-28		Claudio Lopresti
Claudio Lopresti		Meade LX200 12"
CCD Sbig ST9xe / Lum / 180.0		1.4 ± 3.6
TOI-1728b (LOW)
2022-02-07		Jacques Michelet
Claix		GSO Ritchey-Chrétien
QSI-632 / R / 150.0		-0.88 ± 1.87
TOI-1728b (LOW)
2022-02-07		Claudio Lopresti
Claudio Lopresti		Meade LX200 12"
CCD Sbig ST9xe / R / 180.0		-2.75 ± 4.32
TOI-1728b (LOW)
2022-02-07		Robert Roth
TURMX Observatory		Planewave CDK17
QHY600M / rpr / 60.0		-3.33 ± 2.74
TOI-1728b (LOW)
2022-02-07		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / Clear / 120.0		-3.47 ± 1.3
TOI-1728b (LOW)
2022-02-07		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
FLI Kepler CMOS 4040 / Lum / 120.0		-6.06 ± 2.3
TOI-1728b (LOW)
2022-01-24		Anaël Wünsche
Observatoire des Baronnies Provençales		CDK Planewave 2
ZWO ASI6200 / Clear / 120.0		0.73 ± 0.72
TOI-1728b (LOW)
2022-01-24		Cyrille Aumasson
observatory of Baronnies Provençales		ASTELCO 31.5"
FLI PL230 / R / 60.0		-0.71 ± 1.01
TOI-1728b (LOW)
2022-01-17		Martin Crow
Burnham Observatory		Celestron C9.25
SX694 mono / R / 100.0		4.05 ± 3.02
TOI-1728b (LOW)
2021-12-20		Manfred Raetz
privat observatory Herges-Hallenberg		SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0		2.07 ± 1.01
TOI-1728b (LOW)
2021-12-20		Yves Jongen
Rasteau Observatory		Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0		-6.14 ± 2.59
TOI-1728b (LOW)
2021-12-13		Giorgio Baj
M57		Ritchey-Chretien
Sbig STT1603 ME / R / 180.0		-0.08 ± 1.87
TOI-1728b (LOW)
2021-12-13		Alvaro Fornas
Centro Astronómico Alto Turia (CAAT). MPC J57		Planewave CDK 17"
Sbig STXL 11002 / Clear / 120.0		-0.51 ± 1.58
TOI-1728b (LOW)
2021-12-13		Robert Roth
TURMX Observatory		CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 60.0		-1.66 ± 1.58
TOI-1728b (LOW)
2021-12-07		Fran Campos
Puig d'Agulles Observtory		SC12" on EQ8 German mount
SBIG ST-8XME / R / 150.0		5.83 ± 2.02

Space Observations
Planet
Observation Date		 Mission O-C
minutes
TOI-1728b (LOW)
2022-01-24		TESS-3.06 ± 1.08
TOI-1728b (LOW)
2022-01-21		TESS-1.59 ± 1.44
TOI-1728b (LOW)
2022-01-17		TESS-2.68 ± 1.31
TOI-1728b (LOW)
2022-01-10		TESS-1.98 ± 1.17
TOI-1728b (LOW)
2022-01-07		TESS-1.05 ± 1.08
TOI-1728b (LOW)
2022-01-03		TESS-1.62 ± 0.95
TOI-1728b (LOW)
2020-01-19		TESS1.46 ± 1.01
TOI-1728b (LOW)
2020-01-15		TESS0.48 ± 1.24
TOI-1728b (LOW)
2020-01-12		TESS1.91 ± 1.87
TOI-1728b (LOW)
2020-01-08		TESS-1.61 ± 1.14
TOI-1728b (LOW)
2020-01-05		TESS-1.01 ± 1.07
TOI-1728b (LOW)
2020-01-01		TESS0.79 ± 1.24
TOI-1728b (LOW)
2019-12-29		TESS0.02 ± 1.38
TOI-1728b (LOW)
2019-12-25		TESS-0.91 ± 1.41
© 2019-2025 ExoClock Project - Privacy policy - Contact: exoclockproject@gmail.com
The ExoClock Project is managed by the PULSAR Non-profit Civil Law Company / Address: Pipsou 18A, 54627 Thessaloniki, Greece / VAT: EL996400186 / Tax Office: E Thessaloniki