TIC 284726218

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 NSVS 1666821 (VAR, 40" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable NSVS 1666821. 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 0.828 instead of 0.5: the orbit is stretched (eccentricity at least 0.516). 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 (7)

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

Checked 2026-10-12 01:36 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 NSVS 1666821 (VAR, 40" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable NSVS 1666821). WARNING: same period as the known variable NSVS 1666821 40" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 24 (flagged in 1 sector(s)). Detection score 807.8. 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: 2026-10-12 Rare-find check: Eccentric eclipsing binary; Transits of a giant star 2026-10-11 Found by the automatic search in TESS sector 24

The signal

Type	Eclipsing binary
Status	Notable, already known
Period (days)	2.27799
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	58.4%
Amplitude	28.4%
Data used	TESS sector 24 (QLP)

The star (Gaia & TESS)

Distance (pc)	3,772 (~12,304 light years)
Temperature (Gaia)	4,918 K
Size (Gaia)	14.14 x the Sun
Mass (Gaia)	3.87 x the Sun
Luminosity (Gaia)	303.84 x the Sun
Colour, Gaia BP-RP	2.16
RUWE (Gaia)	1.00 - fits a single star
Gaia G mag	13.79
TESS mag	12.72

Names & neighbours

TIC ID	284726218
Gaia DR3 ID	427785790732544256
SIMBAD name	not in SIMBAD
Nearest known variable	NSVS 1666821 (VAR, P = 2.2777 d), 40" away (same period!)
RA (deg)	10.5561
Dec (deg)	62.7226
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-11
Last update	2026-10-12

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)