SDSS J202758.63+773924.5

All names: SDSS J202758.63+773924.5, Gaia DR3 2290926489012810880, SDSSJ202758.63+773924.5, Gaia DR2 2290926489012810880

Parameter	Unit	Geier 2020	Stilism	Simbad
Right ascension		20 27 58.63		20 27 58.63 (0.07)
Declination		77 39 24.50		77 39 24.57 (0.07)
Spectral type		sdO		sdO
Effective temperature	[K]	46200.0 (3200)
log(g)	[cgs]	5.48 (0.2)
Mass	[M_☉]
log(Luminosity)	[L_☉]
Cooling age	[Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)

Parallax	[mas]	0.18 (0.09)		0.21 (0.07)
Distance	[pc]	5458.52 (2774)		4847.31 (1678)
Composition
Proper motion (right ascension)	[mas/yr]	-2.929 (0.2)		-2.934 (0.1)
Proper motion (declination)	[mas/yr]	-3.111 (0.2)		-3.141 (0.09)
Variability
Magnetic
B_d	[MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude		17.50 (0.01)		17.50 (0.01)
g magnitude		17.68 (0.005)		17.68 (0.005)
r magnitude		17.93 (0.007)		17.93 (0.007)
i magnitude		18.11 (0.009)		18.11 (0.009)
z magnitude		18.32 (0.03)		18.32 (0.03)
G magnitude		17.83 (0.002)		17.80 (0.003)
BP magnitude		17.73 (0.01)
RP magnitude		17.84 (0.01)
Pan g magnitude		17.78 (0.005)
Pan r magnitude		17.96 (0.007)
Pan i magnitude		18.16 (0.006)
Pan z magnitude		18.32 (0.005)
Pan y magnitude		18.44 (0.02)
E(B-V)			0.202

Spectra