TIC 265143271

Transit candidateRare, already known

Rare & notable finds

Something genuinely unusual turned up. Treat it as a lead: every one of these has ordinary explanations too, listed with each. How these checks work →

Already known: in SIMBAD as UCAC4 045-017240 (*); catalogued variable star nearby: Gaia DR3 6359853470154711552 (YSO), 118" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Microlensing (rogue planet?) hint
A one-off, symmetric brightening at BTJD 3843.54 that fits the gravitational-lens shape better than a flare (Einstein time 30.2 h). This length points to a star or brown dwarf as the lens. Very rare in TESS data; scattered light and asteroids can mimic it.
Transit timing (TTV) significant
The transits arrive early or late by 7.3 min (typical error 1.2 min) repeating every ~1042.8 orbits: something is tugging on the planet - another planet, or a moon.
Lopsided transit hint
The end of the transit is deeper than the start: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend.

Checked, nothing found (5)

Exocomet-shaped dip · Habitable zone & size · Transit duration (TDV) · Changing transit depth · Type of star

Checked 2026-10-11 16:28 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: Microlensing (rogue planet?); Transit timing (TTV); Lopsided transit (in SIMBAD as UCAC4 045-017240 (*); catalogued variable star nearby: Gaia DR3 6359853470154711552 (YSO), 118" away). Found automatically by hunt.py in TESS sector 27 (flagged in 2 sector(s)). Detection score 373.2. 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: Transit timing (TTV); Microlensing (rogue planet?); Lopsided transit 2026-10-09 Gaia hints at a hidden companion star (RUWE 4.2) 2026-10-09 Found by the automatic search in TESS sector 13

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	0.789363
Period source	hunt.py on TESS QLP sector 27
Eclipse / dip depth	2.3%
Amplitude	3.0%
Data used	TESS sector 27 (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	~63.8 Earth radii (~5.7 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	516 (~1,685 light years)
Temperature (Gaia)	6,472 K
Size (Gaia)	2.46 x the Sun
Mass (Gaia)	1.61 x the Sun
Luminosity (Gaia)	9.84 x the Sun
Colour, Gaia BP-RP	1.46
RUWE (Gaia)	4.18 - hints at a hidden companion star
Radial velocity (Gaia)	speed changes by 114 km/s - likely an orbiting pair
Gaia G mag	12.38
TESS mag	11.64

Names & neighbours

TIC ID	265143271
Gaia DR3 ID	6359847628999190144
SIMBAD name	UCAC4 045-017240 [*]
Nearest known variable	Gaia DR3 6359853470154711552 (YSO), 118" away
RA (deg)	297.562
Dec (deg)	-81.0713
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-09
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)