TIC 258827113

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 4431-672-1 (*). The rare-find check confirms what is on record - still nice, but not a new discovery.

Another planet in the system hint
Another set of dips every 26.0603 days (1056 ppm, 4 seen, SNR 9.8).

Checked, nothing found (11)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Transit duration (TDV) · Changing transit depth · Lopsided transit · Dimming beside the transit · Trojan companions (L4/L5) · Self-lensing binary · Type of star

Checked 2026-10-11 16:51 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: Another planet in the system (in SIMBAD as TYC 4431-672-1 (*)). Found automatically by hunt.py in TESS sector 22 (flagged in 11 sector(s)). Detection score 129.3. 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: Another planet in the system 2026-10-11 Found by the automatic search in TESS sector 22

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	2.47861
Period source	hunt.py on TESS QLP sector 22
Eclipse / dip depth	2.0%
Amplitude	1.6%
Data used	TESS sector 22 (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	~24.8 Earth radii (~2.21 Jupiter)

The star (Gaia & TESS)

Distance (pc)	485 (~1,580 light years)
Temperature (Gaia)	6,551 K
Size (Gaia)	1.51 x the Sun
Mass (Gaia)	1.32 x the Sun
Luminosity (Gaia)	3.78 x the Sun
Colour, Gaia BP-RP	0.61
RUWE (Gaia)	1.13 - fits a single star
Radial velocity (Gaia)	speed changes by 58 km/s - likely an orbiting pair
Gaia G mag	11.71
TESS mag	11.39

Names & neighbours

TIC ID	258827113
Gaia DR3 ID	2262146634717435008
SIMBAD name	TYC 4431-672-1 [*]
Nearest known variable	none within 5'
RA (deg)	287.373
Dec (deg)	69.2007
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.

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Data files

Download everything (.zip)