HE 1256-2738

All names: Gaia EDR3 6187101776610840832, EC 12563-2738, GALEX J125901.3-275418, EC12563-2738, HE 1256-2738, Gaia DR2 6187101776610840832, USNO-B1.0 0620-00338249, Gaia DR3 6187101776610840832

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 12 59 01.37 (0.05) 12 59 01.42 12 59 01.39 (0.05)
Declination -27 54 18.84 (0.04) -27 54 18.69 -27 54 18.77 (0.04)
Spectral type He-sdOB sdOHe
Effective temperature [K] 40029.0 (1000)
log(g) [cgs] 5.68 (0.1)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.46 (0.07) 0.59 (0.1) 0.46 (0.07)
Distance [pc] 2190.10 (335) 1696.93 (301) 2190.10 (335)
Composition
Proper motion (right ascension) [mas/yr] -21.343 (0.07) -21.336 (0.2) -21.343 (0.07)
Proper motion (declination) [mas/yr] -4.899 (0.05) -4.602 (0.1) -4.899 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.90
V magnitude 16.46
R magnitude 16.20
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.48 (0.003) 16.52 (0.004) 16.48 (0.003)
BP magnitude 16.36 (0.004) 16.30 (0.01)
RP magnitude 16.74 (0.007) 16.74 (0.008)
Pan g magnitude 16.36 (0.005)
Pan r magnitude 16.72 (0.002)
Pan i magnitude 17.06 (0.004)
Pan z magnitude 17.32 (0.0005)
Pan y magnitude 17.50 (0.005)
E(B-V) 0.046

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.