TIC 273629517

Eclipsing binaryNotable, already known

Rare & notable finds

A notable find: not unheard of, but the kind of system astronomers are glad to have more of. How these checks work →

Already known: the catalogued variable HAT 199-02899 (E, 46" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable HAT 199-02899. The rare-find check confirms what is on record - still nice, but not a new discovery.

Eccentric eclipsing binary notable
The second eclipse comes at phase 0.174 instead of 0.5: the orbit is stretched (eccentricity at least 0.511). Eccentric binaries show how tides shape orbits, and their slowly turning orbits test General Relativity.
Transits of a giant star notable
Gaia places this star among the giants: planets transiting giants are rare, and a big star makes even a large planet's dip tiny.

Checked, nothing found (6)

Microlensing (rogue planet?) · Exocomet-shaped dip · Eclipse timing (third body?) · Eclipses changing depth · Pulsating star in an eclipsing binary · Extra dips outside the eclipses

Checked 2026-10-11 19:36 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Notable, already known: Eccentric eclipsing binary; Transits of a giant star (the catalogued variable HAT 199-02899 (E, 46" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable HAT 199-02899). WARNING: same period as the known variable HAT 199-02899 46" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 14 (flagged in 2 sector(s)). Detection score 1268.6. 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 Rare-find check: Eccentric eclipsing binary; Transits of a giant star 2026-10-10 Found by the automatic search in TESS sector 14

The signal

Type	Eclipsing binary
Status	Notable, already known
Period (days)	3.14449
Period source	hunt.py on TESS QLP sector 14
Eclipse / dip depth	72.5%
Amplitude	67.8%
Data used	TESS sector 14 (QLP)

The star (Gaia & TESS)

Distance (pc)	2,990 (~9,753 light years)
Colour, Gaia BP-RP	1.60
RUWE (Gaia)	0.86 - fits a single star
Gaia G mag	13.52
TESS mag	12.73

Names & neighbours

TIC ID	273629517
Gaia DR3 ID	2074039952087463424
SIMBAD name	not in SIMBAD
Nearest known variable	HAT 199-02899 (E, P = 3.1467 d), 46" away (same period!)
RA (deg)	300.913
Dec (deg)	39.9041
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

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