exoclock

XO-2Nb (LOW)

Discovered by: Burke et al. 2007

The Star
Simbad
GAIA
2MASS
BD+50 1471
DR2 934346809278715776
J07480647+5013328
RA 07:48:06.4726 DEC +50:13:32.921
Parallax
6.454 mas
P.M. RA
-29.731 mas/y
P.M. DEC
-154.272 mas/y
MagV
11.138
MagR
10.669
MagI
10.243
MagJ
9.744
MagH
9.34
MagK
9.308
MagG
10.972
MagGBP
11.416
MagGRP
10.403
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2457417.57469 ± 0.00013 BJDTDB
Period
2.61585982 ± 1.7e-07 days

Transit Parameters
Damasso et al. 2015
Rp/Rs
0.1049 ± 0.0006
a/Rs
7.93 +0.1 -0.09
i
88.0 +0.4 -0.3 deg
e
-
ω
- deg
DepthR*
14.65 mmag
Duration*
2.71 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Torres et al. 2008
Teff
5340.0 +80.0 -80.0 K
Log(g)
4.48 +0.05 -0.05 cm/s2
Fe/H
0.45 +0.05 -0.05 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 61 (16)
O-C -0.32 ± 0.2 minutes
ExoClock Observations (Recent) 51 (16)
Space Observations (Recent) 8 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 2 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.10516 ± 0.00075

XO-2Nb


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
XO-2Nb (LOW)
2023-01-20
Thomas Wocial
Coppetts Observatory
Celestron C8
QHY183M / AstrodonExoPlanet-BB / 60.0
0.54 ± 1.04
XO-2Nb (LOW)
2022-12-25
Vikrant Kumar Agnihotri
Cepheid Observatory India
GSO Ritchey–Chrétien
SX-35 TRIUS mono (KAF11002) / Lum / 120.0
-1.81 ± 2.3
XO-2Nb (LOW)
2022-12-17
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / R / 120.0
0.94 ± 0.56
XO-2Nb (LOW)
2022-12-17
Jacques Michelet
Claix
GSO Ritchey-Chrétien
QSI-632 / R / 120.0
-0.87 ± 1.05
XO-2Nb (LOW)
2022-12-10
Adrian Jones
Private Observatory (I64)
Meade ACF 30cm
QSI 583 / R / 60.0
0.21 ± 0.69
XO-2Nb (LOW)
2022-12-10
Simon Dawes
William James II Observatory
Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / R / 180.0
-7.2 ± 3.31
XO-2Nb (LOW)
2022-11-26
Salvador Miquel Romero
Vedat Observatory
Meade SN10 F/4.1
SBIG ST8XME / Clear / 120.0
-0.75 ± 1.27
XO-2Nb (LOW)
2022-11-26
Jean-Claude MARIO
Observatoire de la Cabergue
T 500 Cassegrain "Arp 83"
ASI 6200 MM / Lum / 180.0
-2.59 ± 3.02
XO-2Nb (LOW)
2022-11-06
David Quiles
David Quiles Observatory
Celestron EDGEHD 800
Omegon veTEC 571 M / R / 120.0
1.96 ± 1.01
XO-2Nb (LOW)
2022-11-06
Marco Stefanini
Osservatorio Aldebaran
Ritchey-Chretien Altair Astro
Atik 4000 LE / Lum / 250.0
0.4 ± 2.88
XO-2Nb (LOW)
2022-11-06
Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"
NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 25.0
-2.69 ± 1.24
XO-2Nb (LOW)
2022-04-05
Yungshun Chen
FYSHOBS
Takahashi Mewlon 300
SBIG ST-8300M / Lum / 60.0
-4.77 ± 1.15
XO-2Nb (LOW)
2022-03-20
Harri Kiiskinen
Harri Kiiskinen
Takahashi FSQ-85ED
QHY163M / R / 60.0
4.96 ± 4.32
XO-2Nb (LOW)
2022-03-20
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
-0.37 ± 0.72
XO-2Nb (LOW)
2022-03-13
Stefano Lora
MarSEC
Ritchey Chrétien
Moravian G2 Mark II / Clear / 60.0
3.63 ± 2.74
XO-2Nb (LOW)
2022-02-07
Fran Campos
Puig d'Agulles Observtory
RC14" on EQ8 German mount
SBIG ST-8XME / R / 90.0
-1.01 ± 0.86
XO-2Nb (LOW)
2022-01-17
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 120.0
3.28 ± 1.73
XO-2Nb (LOW)
2022-01-11
christian PANTACCHINI
Observatoire de Benayes
Skywhatcher Newton
QHY8L / Clear / 60.0
1.15 ± 2.59
XO-2Nb (LOW)
2022-01-11
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0
-0.58 ± 1.58
XO-2Nb (LOW)
2022-01-11
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / Clear / 120.0
-1.44 ± 1.3
XO-2Nb (LOW)
2021-12-14
Enrique Arce
Vallbona Observatory
Newton 10" f4
Sbig ST7-XME / V / 60.0
-3.66 ± 3.17
XO-2Nb (LOW)
2021-11-10
Jean-Baptiste Marquette
MrKite47
Newton Sky-Watcher 200/1000
ZWO ASI183MM Pro / R / 129.0
-2.97 ± 2.02
XO-2Nb (LOW)
2021-03-24
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
1.15 ± 0.58
XO-2Nb (LOW)
2021-03-24
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / Clear / 120.0
0.86 ± 1.15
XO-2Nb (LOW)
2021-03-24
Jean-Bernard Pioppa
La Roque-Esclapon
KEPLER
ATIK 383 L+ / R / 60.0
-0.29 ± 1.3
XO-2Nb (LOW)
2021-03-24
Matteo Cataneo
Osservatorio Astronomico Civico "G. Barletta"
Marcon Ritchey–Chrétien
Starlight Xpress SXVR-H18 / rpr / 180.0
-0.43 ± 1.44
XO-2Nb (LOW)
2021-03-24
Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"
NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 20.0
-1.73 ± 0.86
XO-2Nb (LOW)
2021-02-18
Geoffrey Thurston
I67
Celestron C-14
Atik 314L+ / R / 20.0
-0.18 ± 2.16
XO-2Nb (LOW)
2021-02-18
Pete Mills
Walcott Observatory
Meade SCT
ZWO ASI178MM / Clear / 30.0
-2.05 ± 0.86
XO-2Nb (LOW)
2021-02-18
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 75.0
-3.35 ± 1.3
XO-2Nb (LOW)
2020-11-08
Tõnis Eenmäe
Tartu Observatory
Planewave CDK 12.5
Apogee Alta U42 / R / 30.0
-1.14 ± 1.3
XO-2Nb (LOW)
2020-11-01
Dim Stouraitis
Galilaios
SCT
SXVF-H9 Starlight-Xpress / R / 20.0
-2.61 ± 1.44
XO-2Nb (LOW)
2020-04-10
Pere Guerra
Observatori Astronòmic Albanyà
16" Meade ACF F8
Moravian G4-9000 / I / 120.0
0.37 ± 1.15
XO-2Nb (LOW)
2020-04-10
John Savage
Z42 Rushay Farm Observatory
Celeston 14Edge with focal reducer
ATIK One 9.0 / V / 60.0
-0.5 ± 0.86
XO-2Nb (LOW)
2020-04-10
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / R / 120.0
-1.07 ± 0.72
XO-2Nb (LOW)
2020-04-10
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 90.0
-1.79 ± 1.01
XO-2Nb (LOW)
2020-03-28
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
0.94 ± 0.72
XO-2Nb (LOW)
2020-03-28
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
0.94 ± 0.58
XO-2Nb (LOW)
2020-02-16
Mauro Caló
Cavallino
RC
SBIG ST10 / R / 90.0
0.74 ± 1.58
XO-2Nb (LOW)
2020-01-20
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 90.0
-0.42 ± 1.15
XO-2Nb (LOW)
2020-01-13
Mauro Caló
Cavallino
RC
SBIG ST10 / R / 90.0
1.28 ± 1.3
XO-2Nb (LOW)
2019-02-20
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / R / 120.0
1.68 ± 1.3
XO-2Nb (LOW)
2019-01-11
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
-1.35 ± 4.32
XO-2Nb (LOW)
2018-04-06
Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
-0.63 ± 0.58
XO-2Nb (LOW)
2017-03-07
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 60.0
-1.73 ± 1.01
XO-2Nb (LOW)
2017-02-22
Nikolaos Paschalis
Nunki Observatory
Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0
4.17 ± 1.3
XO-2Nb (LOW)
2016-04-14
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 60.0
-0.61 ± 0.86
XO-2Nb (LOW)
2016-03-11
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / R / 60.0
-1.36 ± 0.72
XO-2Nb (LOW)
2011-02-07
Filip Walter
Stefanik Observatory
Meade SCT
SBIG ST-10XME / R / 90.0
1.71 ± 0.72
XO-2Nb (LOW)
2010-01-15
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 60.0
2.22 ± 1.01
XO-2Nb (LOW)
2008-01-24
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / V / 90.0
-0.65 ± 1.58

Space Observations

Planet
Observation Date
Mission O-C
minutes
XO-2Nb (LOW)
2020-01-18
TESS0.5 ± 0.85
XO-2Nb (LOW)
2020-01-15
TESS0.19 ± 0.95
XO-2Nb (LOW)
2020-01-13
TESS0.37 ± 1.08
XO-2Nb (LOW)
2020-01-10
TESS-0.27 ± 1.04
XO-2Nb (LOW)
2020-01-05
TESS-0.16 ± 1.11
XO-2Nb (LOW)
2020-01-02
TESS0.92 ± 1.07
XO-2Nb (LOW)
2019-12-30
TESS1.83 ± 1.11
XO-2Nb (LOW)
2019-12-25
TESS-0.81 ± 1.01

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2017-02-17 Wang et al. 2021 -3.0 ± 1.44
2007-02-16 Burke et al. 2007 -0.17 ± 0.29
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