TIC 100773842

Eclipsing binaryProbably known

Rare & notable finds

Nothing rare: all 10 checks came back clear. What was checked →

Checked, nothing found (8)

Microlensing (rogue planet?) · Superflare · Exocomet-shaped dip · Eclipse timing (third body?) · Eccentric eclipsing binary · Pulsating star in an eclipsing binary · Extra dips outside the eclipses · Type of star

Checked 2026-10-12 07:06 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

NOTE: SIMBAD already lists this star (UCAC4 628-128990) as type SB*, so it may be known after all - check the SIMBAD references. Found automatically by hunt.py in TESS sector 16 (flagged in 1 sector(s)). Detection score 581.1. 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: 2026-10-10 Gaia hints at a hidden companion star (RUWE 4.0) 2026-10-10 Found by the automatic search in TESS sector 16

The signal

Type	Eclipsing binary
Status	Probably known
Period (days)	1.91062
Period source	hunt.py on TESS QLP sector 16
Eclipse / dip depth	10.1%
Amplitude	3.9%
Data used	TESS sector 16 (QLP)

The star (Gaia & TESS)

Distance (pc)	229 (~745 light years)
Colour, Gaia BP-RP	1.17
RUWE (Gaia)	3.95 - hints at a hidden companion star
Radial velocity (Gaia)	speed changes by 20 km/s - likely an orbiting pair
Gaia G mag	12.21
TESS mag	11.61

Names & neighbours

TIC ID	100773842
Gaia DR3 ID	1903562838830927744
SIMBAD name	UCAC4 628-128990 [SB*]
Nearest known variable	Gaia DR3 1903563594745169792 (S), 70" away
RA (deg)	341.86
Dec (deg)	35.5447
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

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

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)