Recent

New transit 1/11/2026

GJ 436 b

222

Yves Jongen, Rasteau Observatory, 1/6/2026

Plane Wave CDK 17" on Plane Wave L500 mountSBIG STXL 11002

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New observation 1/11/2026

GJ 436

162

Yves Jongen, Rasteau Observatory, 1/6/2026

Plane Wave CDK 17" on Plane Wave L500 mountSBIG STXL 11002

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New transit 11/26/2025

GJ 436 b

222

Kevin Alton, Desert Blooms Observatory, 4/27/2025

Meade 16" + ZWO ASI2600MM Pro

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New observation 11/26/2025

GJ 436

162

Kevin Alton, Desert Blooms Observatory, 4/27/2025

Meade 16" + ZWO ASI2600MM Pro

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New transit 5/29/2025

GJ 436 b

222

Mario Morales Aimar, Observatorio de Sencelles, 5/28/2025

Newtonian 250 mm f/4 - SBIG ST-7XME

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New observation 5/29/2025

GJ 436

162

Mario Morales Aimar, Observatorio de Sencelles, 5/28/2025

Newtonian 250 mm f/4 - SBIG ST-7XME

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New transit 5/12/2025

GJ 436 b

222

MarSEC, MarSEC, 4/29/2025

R-C 360 mm Moravian G2-1600 Mk II

R-C 360 mm Moravian G2-1600 Mk II
Bad weather condition.

. . .

New observation 4/30/2025

GJ 436

162

MarSEC, MarSEC, 4/29/2025

R-C 360 mm Moravian G2-1600 Mk II

R-C 360 mm Moravian G2-1600 Mk II
Bad weather condition.

. . .

New observation 2/7/2025

GJ 436

162

Claudio Lopresti, GAD Observatory - SP, 2/6/2025

Mak-Newton 180mm F/4, CCD Sbig ST-10xme, L-R-V-B-Ha-SII-OIII-Ic-SA200

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New transit 2/16/2024

GJ 436 b

222

Nikola Antonov, Meshtitsa, Pernik, Bulgaria

250 mm F/4.7 Newtonian, CMOS ASI533MM Pro, Johnson B&V

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New transit 2/10/2024

GJ 436 b

222

D. Bertesteanu, M. Popescu, BD4SB Bucharest 073

Lacerta reflector 0.25m F/4, QHY294M, sloan r

Lacerta reflector 0.25m F/4, QHY294M, sloan r
5sec exposure, sloan r filter, bin 1x1, processed in HOlomon Photometric Software

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New transit 12/22/2023

GJ 436 b

222

Miguel Angel Alava, Sarriguren

Sc 203/2000 f10, Asi1600MM

Sc 203/2000 f10, Asi1600MM
180s exposures, filter Sloan r

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New transit 6/5/2023

GJ 436 b

222

Andre Kovacs, Erika Pakštienė, Moletai Astronomical Observatory (MAO)

35/51 cm Maksutov f/3.5 (MAO) Apogee Alta U47-BB

35/51 cm Maksutov f/3.5 (MAO) Apogee Alta U47-BB
RAW data calibrated and reduced using AstroImageJ, including information on AIRMASS and additional (optional) detrending parameters for AIRMASS and J.D.-2400000.

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New transit 6/2/2023

GJ 436 b

222

Urbaník M., Kysucká hvezdáreň

MEGREZ 88 FD 88/498 + MII G2-8300

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New transit 4/25/2023

GJ 436 b

222

Miguel Angel Alava, Sarriguren

Sc 203/2000 f10, Asi1600MM

Sc 203/2000 f10, Asi1600MM
180s exposures, filter Sloan r'

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New transit 4/25/2023

GJ 436 b

222

Miguel Angel Alava, Sarriguren

Ts 80mm f6, Asi1600MM

Ts 80mm f6, Asi1600MM
120s exposures, TR filter

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New transit 4/26/2022

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin,Marco Fiaschi, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure 15"

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New transit 3/30/2022

GJ 436 b

222

Albert Valenzuela Gonzalez, ARILENA-1

Starblast 4.5 + Samsung NX Mini (DSLR Sony IMX183 Chip)

Starblast 4.5 + Samsung NX Mini (DSLR Sony IMX183 Chip)
ISO 200 + 60s - procesado AIJ bin3

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New transit 3/3/2022

GJ 436 b

222

Antonino Brosio, ABObservatory

300 mm F/4 Newtonian Reflector + ATIK 383 L

300 mm F/4 Newtonian Reflector + ATIK 383 L
SLOAN r Filter, clouds in the end.

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New transit 2/27/2022

GJ 436 b

222

Jens Jacobsen, Egeskov Observatory

c8 @1200mm R610 filter Atik383

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New transit 6/5/2021

GJ 436 b

222

Yenal Öğmen, Green Island Observatory

14" LX200R + ST-8XME CCD

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New transit 5/27/2021

GJ 436 b

222

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1790 + CCD MI G2-1600

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New transit 4/27/2021

GJ 436 b

222

Ferran Grau Horta, Ca l Ou (MPC-C71)

Meade 16 + FLI PL1001

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New transit 4/21/2021

GJ 436 b

222

Veli-Pekka Hentunen, Taurus Hill Observatory (A95), Varkaus, Finland

C-14, Paramount MEII, ST-8XME

C-14, Paramount MEII, ST-8XME
30 sec exposures, three comparison stars, moonlight, bright northern night sky, temperature 0 C, the transit occurred about 20 minutes earlier than predicted

. . .

New transit 4/13/2021

GJ 436 b

222

Yves Jongen, Rasteau Observatory

Plane Wave CDK 17" & SBIG STXL11002

Plane Wave CDK 17" & SBIG STXL11002
60 sec pics on Red filter.

. . .

New transit 4/11/2021

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin,Marco Fiaschi, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure 20"

. . .

New transit 4/5/2021

GJ 436 b

222

Michael Irzyk, Boissettes, France

FSQ85 / H694

FSQ85 / H694
Clear sky but transit at Detection limit for this setup.
HOPS processing

. . .

New transit 3/7/2021

GJ 436 b

222

Nico Montigiani, Massimiliano Mannucci, Osservatorio Astronomico Margherita Hack, Firenze

C14 f/8.25 + CCD SBIG ST10XME

. . .

New transit 3/4/2021

GJ 436 b

222

Yves Jongen, Deep Sky Chile

Plane Wave CDK 17" & Moravian 4G

Plane Wave CDK 17" & Moravian 4G
60 sec pics on Red filter, averaged by pairs to improve SNR.

. . .

New transit 11/21/2020

GJ 436 b

222

Veli-Pekka Hentunen, Taurus Hill Observatory (A95), Varkaus, Finland

C-14, Paramount MEII, ST-8XME

C-14, Paramount MEII, ST-8XME
50 sec exposures, three comparison stars

. . .

New transit 5/28/2020

GJ 436 b

222

Jean plazas, Ribot Observatory

C14 F/7 + camera Starlight Xpress SXVR-H18

C14 F/7 + camera Starlight Xpress SXVR-H18
pose 40s

. . .

New observation 4/3/2020

GJ 436

162

Vojtěch Dienstbier, Hvězdárna Valašské Meziříčí

Sekční set: NWT 150/750 + G2-1600

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New transit 4/3/2020

GJ 436 b

222

Vojtěch Dienstbier, Hvězdárna Valašské Meziříčí

Sekční set: NWT 150/750 + G2-1600

. . .

New transit 4/3/2020

GJ 436 b

222

Vojtěch Dienstbier, Hvězdárna Valašské Meziříčí

Sekční set: NWT 150/750 + G2-1600

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New transit 3/31/2020

GJ 436 b

222

Michael Theusner, Private observatory, Hamburg, Germany

Takahashi FSQ 106 ED, QHY 183M, EQ 6 Mount

Takahashi FSQ 106 ED, QHY 183M, EQ 6 Mount
A light pollution reduction filter was used: Hoya intensifier red enhancer (didymium). Relative photometry analysis with AstroImageJ 3.4.0. Camera settings: Gain: 0, Sensor temperature: -30 °C, Exposure time: 60s

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New transit 3/25/2020

GJ 436 b

222

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1790 + CCD MI G2-1600

. . .

New transit 3/23/2020

GJ 436 b

222

Jens Jacobsen, Egeskov Observatory

EQ8, C14 @f7 Moravian G2-1600

. . .

New transit 3/23/2020

GJ 436 b

222

Jens Jacobsen, Egeskov Observatory

EQ8, C14 @f7 Moravian G2-1600

. . .

New transit 3/23/2020

GJ 436 b

222

F. Lomoz, Sedlčany

SNT254/1016+G2-8300

SNT254/1016+G2-8300
exp. 40 sec.

. . .

New transit 3/23/2020

GJ 436 b

222

Michael Theusner, Private observatory

Takahashi FSQ 106 ED, QHY 183M

Takahashi FSQ 106 ED, QHY 183M
A light pollution reduction filter was used: Hoya intensifier red enhancer (didymium). Relative photometry analysis with AstroImageJ 3.4.0. Camera settings: Gain: 0, Sensor temperature: -30 °C, Exposure time: 120s

. . .

New transit 3/22/2020

GJ 436 b

222

Michael Theusner, Private observatory

Takahashi FSQ 106 ED, QHY 183M

. . .

New transit 3/16/2020

GJ 436 b

222

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1790 + CCD MI G2-1600

. . .

New transit 3/15/2020

GJ 436 b

222

Anaël Wünsche, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11K

Cassegrain 430 mm + STL 11K
120s clear filter. Defocus. Multicomparison stars.

. . .

New transit 2/15/2020

GJ 436 b

222

Veli-Pekka Hentunen, Taurus Hill Observatory (A95), Varkaus, Finland

C-14, Paramount MEII, ST-8XME

C-14, Paramount MEII, ST-8XME
foggy sky, three comparison stars used, 40 sec exposures

. . .

New transit 2/15/2020

GJ 436 b

222

Anaël Wünsche, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11K

Cassegrain 430 mm + STL 11K
120s exposures. No filter. Multicomparison stars. Slight defocus. seeing 3" to 2" at the end. Low elevation so not much time before transit.

. . .

New transit 2/7/2020

GJ 436 b

222

Veli-Pekka Hentunen, Taurus Hill Observatory (A95), Varkaus, Finland

C-14, Paramount MEII, ST-8XME

C-14, Paramount MEII, ST-8XME
40 sec exposures, full moon, foggy sky, temperature -7 C, three comparison stars

. . .

New transit 2/7/2020

GJ 436 b

222

Marc Bretton, UAI B10 Baronnies Provençales Observatory

RC 82 cm - CMOS 294 ASI-ZWO

RC 82 cm - CMOS 294 ASI-ZWO
60 sec exposure binning 3x3 filter clear no defocus multi comparison stars

. . .

New transit 1/30/2020

GJ 436 b

222

Anaël Wünsche, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11K

Cassegrain 430 mm + STL 11K
120s exposures. Clear filter. Slight defocus. Seeing 3". Multicomparison stars.

. . .

New transit 1/24/2020

GJ 436 b

222

Olivier BATTEUX, Hauviné, Ardennes, France

C8 EdgeHD CGEM @ 1500mm + green filter + Atik 414ex

C8 EdgeHD CGEM @ 1500mm + green filter + Atik 414ex
21 second exposures with green filter. Measured grouped by 5, then removed the 2 extreme values and averaged the 3 remaining values.

. . .

New transit 1/22/2020

GJ 436 b

222

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1790 + CCD MI G2-1600

. . .

New transit 5/16/2019

GJ 436 b

222

Jean plazas, Ribot Observatory

lunette 150 f/5 + camera SBIG ST10

lunette 150 f/5 + camera SBIG ST10
pose 30s
light cloudy

. . .

New transit 5/16/2019

GJ 436 b

222

Anael Wunsche, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11K

Cassegrain 430 mm + STL 11K
60s exposures. V filter. binning 1x1. seeing =4 down to 2 at the end. Moon. Slight defocus. Multicomparison stars.

. . .

New transit 4/11/2019

GJ 436 b

222

Anael Wunsche, UAI B10 Baronnies Provençales Observatory

Cassegrain 430 mm STL 11K

Cassegrain 430 mm STL 11K
60s exposures merged by 2 for 120s-equivalent data. Filter V. Bin1x1. Slight defocus. Multicomparison stars.

. . .

New transit 4/4/2019

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure = 20"

. . .

New transit 3/24/2019

GJ 436 b

222

Jean PLAZAS, Ribot Observatory

lunette 150 camera SBIG ST10

lunette 150 camera SBIG ST10
pose 25s

. . .

New transit 3/24/2019

GJ 436 b

222

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

PlaneWave CDK 17 SBIG STLX11002
120 sec pics on Red filter. Defocussed to 10600. Questionable transit???

. . .

New transit 3/3/2019

GJ 436 b

222

Jean plazas, Ribot Observatory

C14 F/6 +camera Starlight Xpress

. . .

New transit 2/24/2019

GJ 436 b

222

Pere Guerra, Observatori Astronòmic Albanyà

16" Meade ACF F8, 10 Micron GM3000 HPS, Moravian G4-9000

16" Meade ACF F8, 10 Micron GM3000 HPS, Moravian G4-9000
1x1 Binning, slightly defocused. Ingress comes aprox 7 minutes earlier than expected.

. . .

New transit 2/23/2019

GJ 436 b

222

Jean plazas, Ribot Observatory

C14 F/6 camera Sbig ST 10

C14 F/6 camera Sbig ST 10
30 s pose
Bad conditions during beggining transit

. . .

New transit 2/21/2019

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure 15"
binning 2x2

. . .

New transit 2/16/2019

GJ 436 b

222

Fran Campos, Observatori Puig dAgulles

N-8" f/4.7 on EQ6; SBIG ST-8XME, Johnson-Cousins BVRcIc filters

N-8" f/4.7 on EQ6; SBIG ST-8XME, Johnson-Cousins BVRcIc filters
150" exposures bin1, averaged 2 exposures.

. . .

New transit 2/16/2019

GJ 436 b

222

Fran Campos, Observatori Puig dAgulles

RC 14" on EQ8; SBIG ST-8XME, Johnson-Cousins BVRcIc filters

RC 14" on EQ8; SBIG ST-8XME, Johnson-Cousins BVRcIc filters
90" exposures bin 1. Very weird behaviour. The strange variability has been checked using various comparison stars.

. . .

New transit 2/15/2019

GJ 436 b

222

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

PlaneWave CDK 17 SBIG STLX11002
90 sec pics on Green filter

. . .

New transit 5/11/2018

GJ 436 b

222

Nosáľ P., Vígľaš

NWT 250/1200 + ATIK 16IC mono

. . .

New transit 5/11/2018

GJ 436 b

222

Serge Bergeron, Astrosberge

Meade RCX400 0.3m ST10xme

Meade RCX400 0.3m ST10xme
Reduction and analysis made with AstroImageJ.

. . .

New transit 5/3/2018

GJ 436 b

222

Nosáľ P., Vígľaš

NWT 250/1200 + ATIK 16IC mono

NWT 250/1200 + ATIK 16IC mono
oblačnosť pri konci pozorovania

. . .

New transit 4/26/2018

GJ 436 b

222

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

. . .

New transit 4/25/2018

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure 25"
filter R

. . .

New transit 2/24/2018

GJ 436 b

222

David Molina, AnunakiObservatory MPC-Z51 | Manzanares el Real

S/C 203mm + CCD ST8xme

S/C 203mm + CCD ST8xme
180",bin 1x1,filter clear,5 comparison stars

. . .

New transit 4/12/2017

GJ 436 b

222

Serge Bergeron, astrosberge

Meade RCX400 305mm ST10xme

Meade RCX400 305mm ST10xme
almost full Moon near by.

. . .

New transit 4/12/2017

GJ 436 b

222

Marc Bretton, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11k

Cassegrain 430 mm + STL 11k
60 sec exposure filter clear binning 1x1 defocused and multi comparison stars

. . .

New transit 3/19/2017

GJ 436 b

222

Francesco Scaggiante, Danilo Zardin, Gruppo Astrofili Salese Galileo Galilei S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF1600 ME

. . .

New transit 2/26/2017

GJ 436 b

222

JOSEP GAITAN, MAS MOIXA MPC C86

SC 10" F 6.8 ST8+AO8

SC 10" F 6.8 ST8+AO8
180 S.

. . .

New transit 2/13/2017

GJ 436 b

222

Wonseok Kang, Deokheung Optical Astronomy Observatory

NYSC 1m Telescope + FLI PL-16803

. . .

New transit 4/20/2016

GJ 436 b

222

Marc Bretton, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11k

Cassegrain 430 mm + STL 11k
60 sec exposure filter Red binning 1x1 defocussed and multi comparison stars

. . .

New transit 4/18/2016

GJ 436 b

222

Robert Harmon, Perkins Observatory

Meade LX600 14-in + QSI 632 CCD Camera

. . .

New transit 3/6/2016

GJ 436 b

222

jc Mario, la cabergue

Celestron 11 + SBIG ST 2000

Celestron 11 + SBIG ST 2000
image with no photometric red filter

. . .

New transit 2/19/2016

GJ 436 b

222

David Molina, AnunakiObservatory/Madrid

S/C 2000mm ST8xme

S/C 2000mm ST8xme
60"

. . .

New transit 11/8/2015

GJ 436 b

222

Stan Shadick, University of Saskatchewan Physics Roof Observatory, CANADA

Meade 10" LX200GPS; SBIG ST10XME CCD

Meade 10" LX200GPS; SBIG ST10XME CCD
Processed with artificial star at 7x5x10 at binning 2.
Used only reference stars C2-C6, C8.

. . .

New transit 5/28/2015

GJ 436 b

222

Stan Shadick, University of Saskatchewan Physics Roof Observatory, CANADA

Meade 12" LX200; SBIG ST10XME CCD

Meade 12" LX200; SBIG ST10XME CCD
Processed with artificial star at 5x5x10 at binning 2.
Used only reference stars C1-C4, C6.
Pier 5.

. . .

New transit 5/7/2015

GJ 436 b

222

AAAV Astrofili Valdera, Oss Astr G.Galilei-Libbiano Mpc code B33

RC 500 f/6 + CCD FLI Kodak KAF 1001E

RC 500 f/6 + CCD FLI Kodak KAF 1001E
AAAV-Ass.ne Astrofili Alta Valdera
(www.astrofilialtavaldera.it)
Observers: Alberto Villa, Maurizio Feraboli, Flavia Casini and Mimmo Belli.
Central obstruction 45 cm due to hight brightness of target.Clear sky / moon in the second half of the transit.

. . .

New transit 5/7/2015

GJ 436 b

222

AAAV Astrofili Valdera, Oss Astr G.Galilei-Libbiano Mpc code B33

RC 500 f/6 + CCD FLI Kodak KAF 1001E

. . .

New transit 5/7/2015

GJ 436 b

222

Faustino Garcia, La Bara, Valdés (MPC J38)

RCX400+SBIG ST9XE-AOL

. . .

New transit 5/7/2015

GJ 436 b

222

Marc Bretton, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11k

Cassegrain 430 mm + STL 11k
20 sec exposure filter red binning 1x1 high clouds

. . .

New transit 4/21/2015

GJ 436 b

222

Marc Bretton, UAI B10 Baronnies Provencales Observatory

Cassegrain 430 mm + STL 11K

Cassegrain 430 mm + STL 11K
30sec exposure filter red binning 1x1 multi comparison stars

. . .

New transit 4/8/2015

GJ 436 b

222

JOSEP GAITAN, MAS MOIXA MPC C86

SC 10" F6.8 ST8+AO8

SC 10" F6.8 ST8+AO8
150 s.

. . .

New transit 3/31/2015

GJ 436 b

222

David Molina, AnunakiObservatory/Madrid

LX200 S/C8" ATIK314L+

. . .

New transit 3/15/2015

GJ 436 b

222

David Molina, Anunaki Observatory / Madrid

S/C 8"+ Lx200+ ATIK 314L+

. . .

New transit 3/15/2015

GJ 436 b

222

Veli-Pekka Hentunen, Taurus Hill Observatory, Varkaus, Finland

C-14 OTA, Paramount ME, SBIG ST-8XME

C-14 OTA, Paramount ME, SBIG ST-8XME
197 unfiltered images, 45 sec exposures, 9 comparison stars

. . .

New observation 3/7/2015

GJ 436

162

Martin Zíbar, Chlumčany

Newton 254/903, sekční G2-0402, AG G1-0300 na SW 80/400

Newton 254/903, sekční G2-0402, AG G1-0300 na SW 80/400
Během pozorování začala přecházet slabší oblačnost, mírný vánek, pole poměrně nízko nad obzorem, konec je brzy ráno, teplota asi -4 C, FWHM kolem 5, expozice 60 s, DQ = 4, TminHJD = 2457080.67095 +/- 0.00269

. . .

New transit 3/7/2015