TIC 378655545

Transit candidateRare, already known

Rare & notable finds

Something unusual, worth a look - less certain than a significant find. How these checks work →

Already known: in SIMBAD as TYC 4026-288-1 (SB*); catalogued variable star nearby: Gaia DR3 528295683376732928 (E, P = 1.8651 d), 140" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Lopsided transit hint
The start of the transit is deeper than the end: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend.

Checked, nothing found (8)

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

Checked 2026-10-11 16:36 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. Rare, already known: Lopsided transit (in SIMBAD as TYC 4026-288-1 (SB*); catalogued variable star nearby: Gaia DR3 528295683376732928 (E, P = 1.8651 d), 140" away). NOTE: SIMBAD already lists this star (TYC 4026-288-1) as type SB*, so it may be known after all - check the SIMBAD references. Found automatically by hunt.py in TESS sector 24 (flagged in 2 sector(s)). Detection score 203.1. 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 2026-10-11 Rare-find check: Lopsided transit 2026-10-11 Found by the automatic search in TESS sector 24

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	3.0397
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	1.2%
Amplitude	1.0%
Data used	TESS sector 24 (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	~57.6 Earth radii (~5.13 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	523 (~1,706 light years)
Temperature (Gaia)	6,821 K
Size (Gaia)	3.58 x the Sun
Mass (Gaia)	2.00 x the Sun
Luminosity (Gaia)	24.93 x the Sun
Colour, Gaia BP-RP	1.21
RUWE (Gaia)	0.77 - fits a single star
Radial velocity (Gaia)	speed changes by 59 km/s - likely an orbiting pair
Gaia G mag	11.04
TESS mag	10.41

Names & neighbours

TIC ID	378655545
Gaia DR3 ID	528249198949886208
SIMBAD name	TYC 4026-288-1 [SB*]
Nearest known variable	Gaia DR3 528295683376732928 (E, P = 1.8651 d), 140" away
RA (deg)	4.26084
Dec (deg)	66.6007
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

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