TIC 259140194

Transit candidateProbably known

Rare & notable finds

Nothing rare: all 11 checks came back clear. What was checked →

Checked, nothing found (9)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Transit duration (TDV) · Changing transit depth · Lopsided transit · Dimming beside the transit · Type of star

Checked 2026-10-11 16:22 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. NOTE: SIMBAD already lists this star (BD+48 887) as type SB*, so it may be known after all - check the SIMBAD references. Found automatically by hunt.py in TESS sector 18 (flagged in 1 sector(s)). Detection score 1291.7. Not in VSX, ASAS-SN or ZTF variable catalogues at the time of the search; not in Gaia DR3's variable lists. Unchecked by hand yet: verify the period, nearby stars and a wider catalogue search. Updates: 2026-10-11 Planet check: Probably noise or an instrument effect 2026-10-10 Gaia hints at a hidden companion star (RUWE 1.6) 2026-10-10 Found by the automatic search in TESS sector 18

The signal

Type	Transit candidate
Status	Probably known
Period (days)	1.40141
Period source	hunt.py on TESS QLP sector 18
Eclipse / dip depth	3.8%
Amplitude	3.1%
Data used	TESS sector 18 (QLP)

Planet check

Verdict	Probably noise or an instrument effect ExoFOP check plot all test results light curve data
Size if it's a planet	~57.4 Earth radii (~5.12 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	266 (~869 light years)
Colour, Gaia BP-RP	0.84
RUWE (Gaia)	1.58 - hints at a hidden companion star
Radial velocity (Gaia)	speed changes by 27 km/s - likely an orbiting pair
Gaia G mag	9.70
TESS mag	9.256

Names & neighbours

TIC ID	259140194
Gaia DR3 ID	435715090629849600
SIMBAD name	BD+48 887 [SB*]
Nearest known variable	ZTF J032004.73+492231.1 (BY, P = 8.7007 d), 47" away
RA (deg)	50.0129
Dec (deg)	49.3875
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-10
Last update	2026-10-11

Where it sits among the stars

ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.

How to read this diagram →

Data files

Download everything (.zip)