exoclock

Qatar-7b (LOW)

Discovered by: Alsubai et al. 2019

The Star
Simbad
GAIA
2MASS
Qatar 7
DR2 2878923523472328704
J23540364+3701185
RA 23:54:03.6389 DEC +37:01:18.584
Parallax
1.388 mas
P.M. RA
-5.189 mas/y
P.M. DEC
-1.129 mas/y
MagV
13.03
MagR
13.02
MagI
12.878
MagJ
11.859
MagH
11.599
MagK
11.561
MagG
12.927
MagGBP
13.267
MagGRP
12.43
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2458303.419733 ± 9.3e-05 BJDTDB
Period
2.03202332 ± 3.3e-07 days

Transit Parameters
Alsubai et al. 2019
Rp/Rs
0.11 ± 0.001
a/Rs
4.84 +0.05 -0.05
i
89.0 +1.0 -1.0 deg
e
-
ω
- deg
DepthR*
15.92 mmag
Duration*
3.58 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Alsubai et al. 2019
Teff
6387.0 +38.0 -38.0 K
Log(g)
4.2 +0.03 -0.03 cm/s2
Fe/H
0.276 +0.071 -0.071 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 7.96"
Total Observations (Recent) 24 (4)
O-C -0.8 ± 0.61 minutes
ExoClock Observations (Recent) 23 (4)
Space Observations (Recent) 0 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs -

Qatar-7b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
Qatar-7b (LOW)
2024-12-01
Giancarlo Madiai
GMAD48
SC8
ASI 432 MM / R / 120.0
-3.63 ± 3.31
Qatar-7b (LOW)
2024-10-05
Snaevarr Guðmundsson
Ness Observatory
Meade LX 200 ACF Schmidt-Cassegrain
SBIG STL 11000M / R / 120.0
2.21 ± 1.73
Qatar-7b (LOW)
2024-10-05
Livia Moretti
Leavitt Observatory
Ritchey-Chrétien 10'' f/8
QHY268 / R / 240.0
-2.4 ± 1.87
Qatar-7b (LOW)
2023-12-10
Bryan Martin
Tiger Butte Observatory Remote
AG Optical IDK
ZWO ASI 294 / Lum / 180.0
2.14 ± 3.6
Qatar-7b (LOW)
2023-11-21
Ian Sharp
PixelSkies
Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / R / 90.0
3.45 ± 2.3
Qatar-7b (LOW)
2023-09-30
Joan Josep Isach Cogollos
Centro Astronómico Alto Turia (CAAT). MPC J57
Skywatcher
ZWO ASI 1600 MM / Lum / 120.0
-7.49 ± 2.16
Qatar-7b (LOW)
2023-09-26
Ramon Naves
Montcabrer
Meade LX200 12" ACF
Moravian G4-9000 / rpr / 60.0
3.67 ± 2.16
Qatar-7b (LOW)
2023-09-26
samuel Diaz Lopez
Tomas Lopez (Astrocamp)
N-AG8
ASI533MM / rpr / 120.0
-2.81 ± 2.74
Qatar-7b (LOW)
2023-09-26
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
-2.84 ± 1.09
Qatar-7b (LOW)
2023-09-23
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
-0.33 ± 2.74
Qatar-7b (LOW)
2023-07-27
jean paul vergne
CH9-gapra
Ritchey Chretien
zwo 294mm pro / Clear / 180.0
1.36 ± 4.46
Qatar-7b (LOW)
2023-07-20
Dim Stouraitis
Galilaios
SCT
SXVF-H9 Starlight-Xpress / R / 130.0
8.95 ± 3.17
Qatar-7b (LOW)
2022-10-21
Vikrant Kumar Agnihotri
Cepheid Observatory India
GSO Ritchey–Chrétien
SX-35 TRIUS mono (KAF11002) / Lum / 120.0
6.54 ± 3.31
Qatar-7b (LOW)
2022-09-08
David Arnot
OSO PIRATE
PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph
FLI ProLine KAF-16803 / R / 70.0
-0.62 ± 1.41
Qatar-7b (LOW)
2022-09-06
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
4.83 ± 2.02
Qatar-7b (LOW)
2022-07-28
Bryan Martin
Tiger Butte Observatory
AG Optical IDK
ZWO ASI 294 / Clear / 120.0
-4.44 ± 2.88
Qatar-7b (LOW)
2021-12-18
Michael Irzyk
Melun
C14
H694 / AstrodonExoPlanet-BB / 60.0
2.68 ± 1.87
Qatar-7b (LOW)
2021-12-18
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
-0.49 ± 1.58
Qatar-7b (LOW)
2021-12-16
Claudio Lopresti
Claudio Lopresti
Meade LX200 12"
CCD Sbig ST9xe / Lum / 180.0
1.13 ± 4.32
Qatar-7b (LOW)
2021-12-16
Fabio Mortari
Hypatia Observatory
Ritchey Chretienne 250mm f/5.3
Sbig ST8-XE / R / 250.0
-3.19 ± 4.32
Qatar-7b (LOW)
2021-12-14
Stephen M. Brincat
Flarestar Observatory - MPC Code:171
Meade SCT
Moravian G2-1600 / AstrodonExoPlanet-BB / 120.0
3.47 ± 2.02
Qatar-7b (LOW)
2021-12-02
Chia-Ming Chang
NTHU Observatory
Showa 250mm Refractor
ASI 6200MM Pro / Lum / 60.0
-0.65 ± 2.74
Qatar-7b (LOW)
2021-11-26
Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-0.12 ± 0.58

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2017-10-16 Alsubai et al. 2019 0.0 ± 0.23
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