SDSS J155006.88+044028.8

All names: SDSS J155006.88+044028.8, Gaia DR2 4426238538996651392, Gaia DR3 4426238538996651392, Gaia EDR3 4426238538996651392, SDSSJ155006.88+044028.8, SDSS J155006.89+044028.8, SDSS J155006.89+044028.81

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Geier 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad
Right ascension 15 50 06.88 (0.3) 15 50 06.89 15 50 06.88 15 50 06.88 (0.4) 15 50 06.88 (0.3)
Declination 04 40 28.78 (0.2) 04 40 28.82 04 40 28.80 04 40 28.78 (0.2) 04 40 28.85 (0.2)
Spectral type sdB DAB DAB sdB
Effective temperature [K] 18482.0 30564.0 (463)
log(g) [cgs] 6.73 5.59 (0.1)
Mass [M] 0.225
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 0.07 (0.3) 0.84 (0.4) 0.84 (0.4) 0.07 (0.3)
Distance [pc] 13508.51 (56937) 1186.80 (600) 1186.76 (600) 13513.51 (56976)
Composition H
Proper motion (right ascension) [mas/yr] -1.512900075 (0.3) -2.604 (0.8) -2.604465388 (0.8) -1.513 (0.3)
Proper motion (declination) [mas/yr] -4.606391108 (0.2) -4.723 (0.6) -4.722934787 (0.6) -4.606 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.89 (0.02) 18.89 (0.02) 18.87 (0.03) 18.89 (0.02)
g magnitude 18.97 (0.009) 18.97 (0.009) 18.97 (0.03) 18.97 (0.009)
r magnitude 19.43 (0.02) 19.43 (0.02) 19.43 (0.02) 19.43 (0.02)
i magnitude 19.76 (0.03) 19.75 (0.03) 19.76 (0.03) 19.75 (0.03)
z magnitude 19.90 (0.1) 19.90 (0.1) 19.89 (0.1) 19.80 (0.1)
G magnitude 19.22 (0.02) 19.26 (0.003) 19.26 19.22 (0.004)
BP magnitude 19.11 (0.02) 19.03 (0.02) 19.03
RP magnitude 19.51 (0.06) 19.39 (0.04) 19.39
Pan g magnitude 19.08 (0.007) 19.08 (0.007)
Pan r magnitude 19.40 (0.01) 19.40 (0.01)
Pan i magnitude 19.74 (0.01) 19.74 (0.01)
Pan z magnitude 20.09 (0.02) 20.09 (0.02)
Pan y magnitude 19.82 (0.04) 19.82 (0.04)
E(B-V) 0.044

* 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.