SDSS J154330.60+290430.9

All names: Gaia EDR3 1224910074227079424, Gaia DR3 1224910074227079424, SDSS J154330.61+290431.0, SDSS J154330.60+290430.9, GALEX J154330.5+290431, Gaia DR2 1224910074227079424, SDSS J154330.60+290431.0, WD 1541+292, SDSS J154330.60+290431.00

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 43 30.62 (0.1) 15 43 30.61 15 43 30.62 (0.2) 15 43 30.62 15 43 30.61 (0.1) 15 43 30.61 15 43 30.02 15 43 30.60
Declination 29 04 31.00 (0.2) 29 04 30.98 29 04 31.00 (0.2) 29 04 31.00 29 04 31.01 (0.2) 29 04 30.98 29 04 28.20 29 04 30.98
Spectral type DB DB DB DB DB DB DB+MS
Effective temperature [K] 15237.0 15386.0 13623.0 13526.0 (740) 16097.0 (236) 15681.0 (278)
log(g) [cgs] 8.15 8.01 7.85 7.92 (0.1) 8.30 (0.1) 8.33 (0.2)
Mass [M☉] 0.684 0.594 0.502 0.543 (0.09) 0.789 (0.1)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.2131
log(H/He) -5.422
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 2.81 (0.2) 2.53 (0.3) 2.81 2.81 (0.2)
Distance [pc] 356.38 (28) 395.79 (43) 356.38 356.38 (28)
Composition He
Proper motion (right ascension) [mas/yr] 5.220180003 (0.2) 5.368291691 (0.4) 5.22 (0.2) 8.6
Proper motion (declination) [mas/yr] -0.318807085 (0.2) 0.644091871 (0.5) -0.319 (0.2) -1.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.08 (0.02) 19.08 (0.02) 19.11 (0.03) 19.11 19.10 (0.02)
g magnitude 19.10 (0.01) 19.10 (0.01) 19.11 (0.02) 19.10 19.10 (0.02)
r magnitude 19.39 (0.01) 19.39 (0.01) 19.40 (0.02) 19.39 19.40 (0.02)
i magnitude 19.65 (0.02) 19.65 (0.02) 19.65 (0.02) 19.64 19.66 (0.02)
z magnitude 19.79 (0.07) 19.80 (0.07) 19.82 (0.07) 19.81 19.83 (0.07)
G magnitude 19.27 (0.02) 19.31 19.27 19.27 (0.003)
BP magnitude 19.24 (0.02) 19.15
RP magnitude 19.28 (0.03) 19.23
Pan g magnitude 19.18 (0.007)
Pan r magnitude 19.41 (0.008)
Pan i magnitude 19.64 (0.01)
Pan z magnitude 19.83 (0.02)
Pan y magnitude 20.12 (0.06)
E(B-V) 0.029

* 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.