SDSS J155408.12+072642.4

All names: SDSS J155408.13+072642.4, GALEX J155408.1+072642, Gaia DR3 4430110228675871744, Gaia EDR3 4430110228675871744, Gaia DR2 4430110228675871744, SDSS J155408.12+072642.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 54 08.14 (0.2) 15 54 08.13 15 54 08.14 (0.2) 15 54 08.14 15 54 08.13 (0.2) 15 54 08.13
Declination 07 26 42.61 (0.1) 07 26 42.47 07 26 42.60 (0.3) 07 26 42.61 07 26 42.36 (0.1) 07 26 42.45
Spectral type DA DA DA DA DA
Effective temperature [K] 13224.0 15044.0 (1046) 15090.0 (285)
log(g) [cgs] 7.95 7.97 (0.1) 7.88 (0.06)
Mass [M] 0.581 0.599 (0.08) 0.551 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.2678
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] 3.31 (0.2) 3.53 (0.4) 3.31 3.31 (0.2)
Distance [pc] 301.72 (21) 283.24 (35) 301.72 301.72 (21)
Composition H
Proper motion (right ascension) [mas/yr] 12.48982639 (0.2) 12.41740944 (0.6) 12.49 (0.2)
Proper motion (declination) [mas/yr] 15.50336976 (0.2) 15.90993054 (0.9) 15.503 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.92 (0.07)
H magnitude 18.90 (0.1)
K magnitude
u magnitude 18.94 (0.02) 18.94 (0.02) 18.97 (0.03)
g magnitude 18.56 (0.008) 18.56 (0.008) 18.61 (0.01)
r magnitude 18.84 (0.01) 18.84 (0.01) 18.92 (0.03)
i magnitude 19.07 (0.02) 19.07 (0.01) 19.14 (0.02)
z magnitude 19.29 (0.05) 19.29 (0.05) 19.35 (0.05)
G magnitude 18.73 (0.02) 18.77 18.73 18.73 (0.003)
BP magnitude 18.74 (0.02) 18.71
RP magnitude 18.86 (0.03) 18.83
Pan g magnitude 18.62 (0.004)
Pan r magnitude 18.87 (0.006)
Pan i magnitude 19.12 (0.01)
Pan z magnitude 19.31 (0.02)
Pan y magnitude 19.49 (0.05)
E(B-V) 0.035

* 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.