SDSS J155454.05+182614.9

All names: Gaia EDR3 1202811569839362176, Gaia DR3 1202811569839362176, Gaia DR2 1202811569839362176, SDSSJ155454.05+182614.9, SDSS J155454.05+182614.9, SDSS J155454.05+182614.96

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Geier 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad
Right ascension 15 54 54.05 (0.6) 15 54 54.05 15 54 54.05 15 54 54.05 (0.8) 15 54 54.05 (0.6)
Declination 18 26 14.87 (0.6) 18 26 14.93 18 26 14.90 18 26 14.87 (0.6) 18 26 14.88 (0.6)
Spectral type sdO DAZ DAZ DAZ
Effective temperature [K] 38606.0 (1504) 9328.0 37809.0 (681)
log(g) [cgs] 5.12 (0.2) 7.67 5.06 (0.09)
Mass [M] 0.425
log(Luminosity) [L]
Cooling age [Gyr] 0.4926
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] -0.79 (0.8) 5.01 (1) 5.01 (1) 5.01 (1)
Distance [pc] 199.44 (44) 199.44 (44) 199.44 (44)
Composition H
Proper motion (right ascension) [mas/yr] 0.114283873 (0.7) -2.883 (1) -2.882516046 (1) 0.114 (0.7)
Proper motion (declination) [mas/yr] -0.624620579 (0.7) -0.087 (1) -0.087160071 (1) -0.625 (0.8)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.27 (0.01) 18.27 (0.01) 18.27 (0.02) 18.27 (0.01)
g magnitude 18.38 (0.007) 18.38 (0.007) 18.40 (0.01) 18.38 (0.007)
r magnitude 18.54 (0.008) 18.54 (0.008) 18.55 (0.01) 18.54 (0.008)
i magnitude 18.65 (0.01) 18.65 (0.01) 18.66 (0.02) 18.65 (0.01)
z magnitude 18.79 (0.04) 18.79 (0.04) 18.82 (0.04) 18.79 (0.04)
G magnitude 18.75 (0.02) 18.64 (0.006) 18.64 18.75 (0.01)
BP magnitude 18.43 (0.02) 18.38 (0.02) 18.38
RP magnitude 18.38 (0.02) 18.34 (0.02) 18.34
Pan g magnitude 18.42 (0.005) 18.42 (0.005)
Pan r magnitude 18.58 (0.006) 18.58 (0.006)
Pan i magnitude 18.67 (0.004) 18.67 (0.004)
Pan z magnitude 18.76 (0.009) 18.76 (0.009)
Pan y magnitude 18.80 (0.03) 18.80 (0.03)
E(B-V) 0.042

* 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.