SDSS J155108.24+454313.3

All names: Gaia EDR3 1397850501516644480, SDSS J155108.25+454313.2, Gaia DR3 1397850501516644480, SDSS J155108.24+454313.3, SDSS J155108.25+454313.22, GALEX J155108.2+454313, Gaia DR2 1397850501516644480

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 15 51 08.25 (0.07) 15 51 08.24 15 51 08.25 (0.08) 15 51 08.25 15 51 08.24 (0.07)
Declination 45 43 13.31 (0.08) 45 43 13.36 45 43 13.31 (0.1) 45 43 13.31 45 43 13.38 (0.08)
Spectral type DA DA DA DA DA DA
Effective temperature [K] 43992.0 (707) 29519.0 48051.0 (665) 57920.0 (13325)
log(g) [cgs] 7.69 (0.07) 7.50 8.08 (0.05) 7.99 (2)
Mass [M] 0.54 (0.03) 0.425 0.71 (0.02) 0.699 (89)
log(Luminosity) [L] 0.00 (0.05)
Cooling age [Gyr] 0.0026 (0.0003) 0.0101
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] 1.78 (0.09) 1.89 (0.1) 1.78 1.78 (0.09)
Distance [pc] 562.82 (27) 530.20 (28) 562.82 562.81 (27)
Composition H H
Proper motion (right ascension) [mas/yr] 11.11083238 (0.08) 10.86804801 (0.2) 11.111 (0.08)
Proper motion (declination) [mas/yr] -4.51883982 (0.1) -4.746279464 (0.2) -4.519 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.17 (0.009) 17.18 (0.01) 17.17 (0.009)
g magnitude 17.52 (0.005) 17.55 (0.02) 17.52 (0.005)
r magnitude 18.06 (0.007) 18.06 (0.02) 18.06 (0.007)
i magnitude 18.44 (0.01) 18.46 (0.02) 18.44 (0.01)
z magnitude 18.71 (0.03) 18.70 (0.03) 18.71 (0.03)
G magnitude 17.80 (0.006) 17.83 17.80 17.80 (0.003)
BP magnitude 17.66 (0.006) 17.58
RP magnitude 18.11 (0.02) 18.10
Pan g magnitude 17.62 (0.006)
Pan r magnitude 18.07 (0.007)
Pan i magnitude 18.43 (0.005)
Pan z magnitude 18.72 (0.008)
Pan y magnitude 18.90 (0.01)
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.