TIC 88457347

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 4114-604-1 (SB*); catalogued variable star nearby: Gaia DR3 1099411847096515328 (E, P = 31.62 d), 112" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Dimming beside the transit hint
On average the star is 601 ppm dimmer just before and after the transit (13.9 sigma): what a moon (or ring/dust) travelling with the planet would cause. Instrument trends can do this too.

Checked, nothing found (8)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Changing transit depth · Lopsided transit · Trojan companions (L4/L5) · Type of star

Checked 2026-10-11 16:37 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: Dimming beside the transit (in SIMBAD as TYC 4114-604-1 (SB*); catalogued variable star nearby: Gaia DR3 1099411847096515328 (E, P = 31.62 d), 112" away). NOTE: SIMBAD already lists this star (TYC 4114-604-1) as type SB*, so it may be known after all - check the SIMBAD references. Found automatically by hunt.py in TESS sector 20 (flagged in 1 sector(s)). Detection score 187.0. 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: Dimming beside the transit 2026-10-11 Gaia hints at a hidden companion star (RUWE 9.1) 2026-10-11 Found by the automatic search in TESS sector 20

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	5.46694
Period source	hunt.py on TESS QLP sector 20
Eclipse / dip depth	1.8%
Amplitude	0.2%
Data used	TESS sector 20 (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	~20.2 Earth radii (~1.8 Jupiter)

The star (Gaia & TESS)

Distance (pc)	462 (~1,508 light years)
Temperature (Gaia)	5,923 K
Size (Gaia)	2.40 x the Sun
Mass (Gaia)	1.40 x the Sun
Luminosity (Gaia)	6.40 x the Sun
Colour, Gaia BP-RP	0.72
RUWE (Gaia)	9.08 - hints at a hidden companion star
Radial velocity (Gaia)	speed changes by 49 km/s - likely an orbiting pair
Gaia G mag	10.95
TESS mag	10.56

Names & neighbours

TIC ID	88457347
Gaia DR3 ID	1099411576514297728
SIMBAD name	TYC 4114-604-1 [SB*]
Nearest known variable	Gaia DR3 1099411847096515328 (E, P = 31.62 d), 112" away
RA (deg)	105.418
Dec (deg)	62.8504
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)