HZ 28

All names: SDSS J123226.10+412919.5, GD 317, CSI+41-12300, PSO J123226.089+412919.475, Gaia DR2 1534778323816310912, SDSS J123226.10+412919.57, WDJ123226.19+412919.33

Parameter	Unit	Pan-STARRS DR1	Gaia DR2	Kepler et al. 2015	SDSS DR10	Simbad	Gentile Fusillo et al. 2018
Right ascension			12 32 26.05 (0.04)		12 32 26.17	12 32 26.18	12 32 26.05
Declination			41 29 19.47 (0.03)		41 29 19.47	41 29 19.21	41 29 19.47
Spectral type				DA		DA2.5
Effective temperature	[K]			20710.0 (64)
log(g)	[cgs]			8.15 (0.01)
Mass	[M_☉]			0.705 (0.005)
log(Luminosity)	[L_☉]
Cooling age	[Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax	[mas]		10.59 (0.05)			7.30	10.59 (0.05)
Distance	[pc]		94.44 (0.5)			136.99	94.44 (0.5)
Composition
Proper motion (right ascension)	[mas/yr]		-105.826194221 (0.06)			-96.0	-105.826194221
Proper motion (declination)	[mas/yr]		9.1445247946 (0.07)			12.6	9.14452479459
Variability
Magnetic
B_d	[MG]
Infrared excess (disk)
Binarity
B magnitude						15.68
V magnitude						15.75
R magnitude
I magnitude
J magnitude						16.16
H magnitude						16.18
K magnitude						16.34
u magnitude				15.61 (0.02)	15.60 (0.004)	15.60	15.60 (0.004)
g magnitude				15.55 (0.03)	15.52 (0.003)	15.52	15.52 (0.003)
r magnitude				15.94 (0.02)	15.91 (0.003)	15.91	15.91 (0.003)
i magnitude				16.24 (0.02)	16.21 (0.004)	16.21	16.21 (0.004)
z magnitude				16.48 (0.03)	16.46 (0.008)	16.46	16.46 (0.008)
G magnitude			15.76				15.76
BP magnitude			15.62				15.62
RP magnitude			15.91				15.91
Pan g magnitude		15.59 (0.006)
Pan r magnitude		15.92 (0.002)
Pan i magnitude		16.23 (0.006)
Pan z magnitude		16.50 (0.005)
Pan y magnitude		16.65 (0.005)

HZ 28

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