TIC 389915258

Transit candidateProbably known

Rare & notable finds

Nothing rare: all 10 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 · Self-lensing binary · Type of star

Checked 2026-10-11 16:32 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 (UCAC4 736-061084) 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 12 sector(s)). Detection score 241.6. 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 Found by the automatic search in TESS sector 24

The signal

Type	Transit candidate
Status	Probably known
Period (days)	0.423408
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	2.4%
Amplitude	3.0%
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	~29.4 Earth radii (~2.62 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	530 (~1,727 light years)
Temperature (Gaia)	5,512 K
Size (Gaia)	1.71 x the Sun
Mass (Gaia)	1.03 x the Sun
Luminosity (Gaia)	2.44 x the Sun
Colour, Gaia BP-RP	0.85
RUWE (Gaia)	1.37 - fits a single star
Radial velocity (Gaia)	speed changes by 38 km/s - likely an orbiting pair
Gaia G mag	12.37
TESS mag	11.93

Names & neighbours

TIC ID	389915258
Gaia DR3 ID	2151350188015810304
SIMBAD name	UCAC4 736-061084 [SB*]
Nearest known variable	Gaia DR3 2151350252441996288 (S), 88" away
RA (deg)	275.91
Dec (deg)	57.1533
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)