Transit observations (TRESCA database)

Exoplanet:	GJ3470 b
observer:
Post address:
E-mail:
Station:
Geographic location:	east longitude: 289° \| north latitude: 42°
Instrument:
Photometric filter:	U B V R I Clear
Notes / conditions:	THIS TRANSIT MID TIME OCCURRED 143 MINUTES EARLY with longer than expected duration and greater depth compared to expected /reference paper. Unfortunately clouds ruined recording predicted transit time. Is this GJ3470b or another planet??? BBC filter, 11 star ensemble, clear sky. Alternative 2 star ensemble shows same result. Computer time accuracy synched by Dimension-4 every 15 sec. Maybe a false transit LC but I have successfully recorded 85+ LCs so far and never had this happen.
Already published in:

S is standard deviation
DQ is data quality index, calculated by amplitude and S relation,
ro is data density per minute

Mid transit JDmid:
Mid transit HJDmid:	(helcor = 0.00535)
Mid transit - UTC:
Transit duration:	minut
Transit depth:	mag
Submitted data:	geocentric based on UTC

Identification chart:

Show in ETD


R_p:	0.38 +/- 0.05 R_Jup	0.504 _-0.014^+0.014 R_Jup
R_*:	0.568 +/- 0.063 R_Sun	fixed, errors included in i
A:	0.0348 +/- 0.0014 AU	fixed, errors included in i
Per:	3.33665 days	fixed
i :	88.3 +/- 0.5 °	88.21 _-0.21\|1.55^+0.24\|1.79 °

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object GJ3470 b

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Paul Benni, 3. 1. 2014 (www)
Update: Based on recent Spitzer Observations (Demory et al 2013; arXiv:1301.6555v2) their updated Transit Ephemeris calculation fits this GJ3470b transit LC. -Paul Benni

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New minima in B.R.N.O.:

WISE J191730.6+374838 (Henzl Z.)

WISE J191807.0+375829 (Henzl Z.)

CzeV1717 Lyr (Henzl Z.)

CzeV1689 Lyr (Henzl Z.)

ET Boo (Pokorný P.)

AC Boo (Pokorný P.)

HV UMa (Pokorný P.)

W UMa (Sergey I.)

AU Ser (Mašek M.)

EL CVn (Mašek M.)

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KELT-3 b (R. Larochelle)

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XO-4 b (V. Hentunen)

XO-2 b (M. Raetz)

WASP-65 b (L. Dame)

Kepler-17 b (V. Hentunen)

HAT-P-36 b (M. Raetz)

New data MEDUZA:

CCD:
P. Dubovský: GK Per, V 392 Per, Vend47 Sge, V 392 Per, GK Per, V 392 Per, Vend47 Sge, BF Cyg, V 1490 Cyg, ASASJ1954 Sge,

VIZ:
P. Dubovský: BB Aur, NSV 16874 Aur, VW Aur, TT Boo, UZ Boo, V Boo, SY Cam, U Cam, XX Cam, Z Cam, BX Cas, NSV 650 Cas, V 365 Cas, V 465 Cas, V 764 Cas, VY Cas, TZ Cep, R CrB, T CrB, VW CrB,

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