PHL 178

All names: 2MASS J21511307-2107042, GALAH 170802004901332, uvby98 610160178, Gaia DR3 6817299093841252864, PHL178, TYC 6375-424-1, TIC 25300088, Gaia DR2 6817299093841252864, EC 21484-2121, PHL 178

Parameter	Unit	Geier 2020	Stilism	Simbad
Right ascension		21 51 13.06		21 51 13.08 (0.04)
Declination		-21 07 04.18		-21 07 04.26 (0.04)
Spectral type		He-sdO		sdO7.5VIIHe40
Effective temperature	[K]
log(g)	[cgs]
Mass	[M_☉]
log(Luminosity)	[L_☉]
Cooling age	[Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)

Parallax	[mas]	1.24 (0.1)		1.32 (0.06)
Distance	[pc]	804.44 (63)		758.73 (32)
Composition
Proper motion (right ascension)	[mas/yr]	0.959 (0.1)		0.758 (0.06)
Proper motion (declination)	[mas/yr]	-12.526 (0.1)		-12.546 (0.04)
Variability
Magnetic
B_d	[MG]
Infrared excess (disk)
Binarity
B magnitude				12.92 (0.2)
V magnitude				12.50 (0.2)
R magnitude
I magnitude
J magnitude		13.71 (0.02)		13.71 (0.02)
H magnitude		13.82 (0.04)		13.82 (0.04)
K magnitude		13.97 (0.05)		13.97 (0.05)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude		13.03 (0.002)		13.00 (0.003)
BP magnitude		12.79 (0.01)
RP magnitude		13.31 (0.002)
Pan g magnitude		12.76
Pan r magnitude		13.27
Pan i magnitude		13.64 (0.005)
Pan z magnitude		13.92 (0.002)
Pan y magnitude		14.13 (0.006)
E(B-V)			0.022

PHL 178

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