SDSS J152318.77+004947.7

All names: SDSS J152318.77+004948.0, SDSS J152318.77+004947.8, Gaia DR3 4420398311187340160, SDSS J152318.77+004947.7, Gaia EDR3 4420398311187340160, SDSS J152318.77+004947.78, GALEX J152318.8+004948, Gaia DR2 4420398311187340160

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 15 23 18.77 (0.3) 15 23 18.77 15 23 18.77 (0.5) 15 23 18.77 (0.3)
Declination 00 49 47.81 (0.3) 00 49 48.01 00 49 47.82 (0.5) 00 49 47.97 (0.3)
Spectral type DA DA DA DA DA
Effective temperature [K] 45361.0 (1828) 21585.0 51991.0 (1456)
log(g) [cgs] 7.41 (0.2) 7.37 8.07 (0.1)
Mass [M] 0.45 (0.05) 0.359 0.711 (0.05)
log(Luminosity) [L] 0.26 (0.1)
Cooling age [Gyr] 0.0003 (0.0003) 0.0203
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] 0.81 (0.4) 1.04 (0.6) 0.81 (0.4)
Distance [pc] 1231.75 (614) 965.03 (526) 1231.68 (614)
Composition H H
Proper motion (right ascension) [mas/yr] -5.655552384 (0.4) -6.023692464 (1) -5.656 (0.4)
Proper motion (declination) [mas/yr] -9.730678275 (0.4) -9.670858852 (1) -9.731 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.01 (0.02) 19.04 (0.03) 19.01 (0.02)
g magnitude 19.37 (0.01) 19.40 (0.02) 19.37 (0.01)
r magnitude 19.81 (0.02) 19.83 (0.02) 19.81 (0.02)
i magnitude 20.12 (0.03) 20.15 (0.03) 20.12 (0.03)
z magnitude 20.62 (0.2) 20.63 (0.2) 20.62 (0.2)
G magnitude 19.59 (0.06) 19.65 19.59 (0.005)
BP magnitude 19.50 (0.06) 19.38
RP magnitude 19.85 (0.2) 19.64
Pan g magnitude 19.41 (0.02)
Pan r magnitude 19.83 (0.01)
Pan i magnitude 20.14 (0.01)
Pan z magnitude 20.40 (0.05)
Pan y magnitude 20.42 (0.08)
E(B-V) 0.050

* 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.