HE 2155-1724

All names: TIC 425040762, GALEX J215819.5-171016, Gaia EDR3 6826638521701833472, HE2155-1724, EC 21555-1724, Gaia DR2 6826638521701833472, Gaia DR3 6826638521701833472, 2MASS J21581962-1710164, HE 2155-1724

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 21 58 19.64 (0.04) 21 58 19.58 21 58 19.62 (0.04)
Declination -17 10 16.95 (0.05) -17 10 16.74 -17 10 16.74 (0.05)
Spectral type sdB sdB/DA
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] 0.74 (0.05) 0.77 (0.08) 0.74 (0.05)
Distance [pc] 1349.71 (93) 1301.24 (135) 1349.71 (93)
Composition
Proper motion (right ascension) [mas/yr] 18.933 (0.05) 18.867 (0.1) 18.933 (0.05)
Proper motion (declination) [mas/yr] -13.062 (0.05) -12.944 (0.1) -13.062 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.81
V magnitude 15.07
R magnitude
I magnitude
J magnitude 15.43 (0.04) 15.43 (0.04)
H magnitude 15.79 (0.1) 15.79 (0.1)
K magnitude 15.22 (0.1) 15.22 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.99 (0.003) 15.01 (0.0009) 14.99 (0.003)
BP magnitude 14.87 (0.004) 14.81 (0.01)
RP magnitude 15.24 (0.004) 15.24 (0.003)
Pan g magnitude 14.86 (0.006)
Pan r magnitude 15.23 (0.003)
Pan i magnitude 15.58 (0.002)
Pan z magnitude 15.82 (0.005)
Pan y magnitude 15.97 (0.003)
E(B-V) 0.022

* 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.