SDSS J154644.44+502901.9

All names: Gaia DR3 1404079990803076992, Gaia DR2 1404079990803076992, SDSS J154644.45+502902.1, SDSS J154644.44+502902.0, SDSS J154644.45+502902.0, SDSS J154644.44+502901.9, Gaia EDR3 1404079990803076992, WD 1545+506, GALEX J154644.4+502902

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 46 44.45 (0.2) 15 46 44.45 15 46 44.45 (0.3) 15 46 44.45 (0.2) 15 46 44.45 15 46 44.04 15 46 44.45
Declination 50 29 01.94 (0.2) 50 29 02.04 50 29 01.94 (0.2) 50 29 02.04 (0.2) 50 29 01.93 50 28 59.16 50 29 02.05
Spectral type DA DA DA DA_auto DA DA DA
Effective temperature [K] 31971.0 (791) 23023.0 31758.0 (580) 31738.0 (500)
log(g) [cgs] 7.74 (0.2) 6.90 7.74 (0.1) 7.69 (0.1)
Mass [M] 0.52 (0.08) 0.261 0.513 (0.05)
log(Luminosity) [L] -0.61 (0.1)
Cooling age [Gyr] 0.0069 (0.001)
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] 0.93 (0.2) 0.81 (0.3) 0.93 (0.2)
Distance [pc] 1072.66 (214) 1239.73 (424) 1072.62 (214)
Composition H H
Proper motion (right ascension) [mas/yr] -3.99620231 (0.2) -4.420229887 (0.4) -3.996 (0.2) -4.8
Proper motion (declination) [mas/yr] -6.41234555 (0.2) -6.260519433 (0.6) -6.412 (0.2) -11.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.70 (0.02) 18.70 (0.02) 18.68 (0.03) 18.68 18.70 (0.03)
g magnitude 18.96 (0.009) 18.96 (0.009) 18.97 (0.01) 18.97 18.97 (0.01)
r magnitude 19.39 (0.01) 19.39 (0.01) 19.39 (0.02) 19.39 (0.02)
i magnitude 19.79 (0.03) 19.79 (0.03) 19.78 (0.03) 19.80 (0.03)
z magnitude 20.27 (0.2) 20.27 (0.2) 20.24 (0.2) 20.25 (0.2)
G magnitude 19.20 (0.02) 19.24 19.20 (0.004)
BP magnitude 19.11 (0.02) 19.01
RP magnitude 19.48 (0.05) 19.47
Pan g magnitude 19.04 (0.01)
Pan r magnitude 19.43 (0.008)
Pan i magnitude 19.75 (0.01)
Pan z magnitude 20.06 (0.02)
Pan y magnitude 19.88 (0.2)
E(B-V) 0.019

* 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.