SDSS J154623.07+392723.6

All names: SDSS J154623.08+392723.7, Gaia DR3 1377594233157992704, SDSS J154623.07+392723.6, GALEX J154623.0+392724, WD 1544+396.1, Gaia DR2 1377594233157992704, Gaia EDR3 1377594233157992704, J1546+3927

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 Gaia DR2 Stilism Dufour et al. 2007 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 46 23.08 (0.2) 15 46 23.08 15 46 23.07 15 46 23.08 (0.2) 15 46 23.08 15 46 23.07 (0.2) 15 46 22.87 15 46 23.08
Declination 39 27 23.73 (0.2) 39 27 23.66 39 27 23.60 39 27 23.73 (0.2) 39 27 23.73 39 27 23.60 (0.2) 39 27 21.24 39 27 23.68
Spectral type DZ DZ DZ DZ DZ5.8 DZ_LINE_AT_6000? DZ
Effective temperature [K] 8924.0 (216) 8680.0 (220) 8436.0 (351) 10114.0 (47)
log(g) [cgs] 8.13 8.00 8.00 (0.07) 9.25 (0.6)
Mass [M] 0.6554 0.579 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 1.0100
log(H/He) <-5.4137 <-5.0
log(C/He)
log(Ca/He) -8.4598 (0.2) -8.92 (0.1)
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] 5.60 (0.2) 5.22 5.22 (0.3) 5.60 5.60 (0.2)
Distance [pc] 178.46 (6) 191.56 (9) 191.56 (9) 192.00 178.46 178.46 (6)
Composition He He
Proper motion (right ascension) [mas/yr] 1.633363627 (0.2) 1.774671465 (0.5) 1.633 (0.2)
Proper motion (declination) [mas/yr] 8.04369042 (0.2) 7.916079435 (0.5) 8.044 (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 19.40 (0.03) 19.41 (0.03) 19.42 (0.03)
g magnitude 19.11 (0.01) 19.11 (0.01) 19.12 (0.02)
r magnitude 19.17 (0.01) 19.17 (0.01) 19.19 (0.01)
i magnitude 19.29 (0.02) 19.29 (0.02) 19.29 (0.02)
z magnitude 19.41 (0.06) 19.41 (0.06) 19.43 (0.06)
G magnitude 19.10 (0.03) 19.14 19.10 19.10 (0.004)
BP magnitude 19.21 (0.03) 19.18
RP magnitude 19.01 (0.04) 18.99
Pan g magnitude 19.12 (0.03)
Pan r magnitude 19.17 (0.01)
Pan i magnitude 19.30 (0.02)
Pan z magnitude 19.45 (0.02)
Pan y magnitude 19.48 (0.08)
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.