SDSS J152154.23+280540.0

All names: Gaia DR3 1271791596471715712, GALEX J152154.2+280539, Gaia DR2 1271791596471715712, SDSS J152154.23+280540.0, SDSS J152154.23+280540.1, Gaia EDR3 1271791596471715712

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 21 54.24 (0.1) 15 21 54.23 15 21 54.24 (0.2) 15 21 54.23 (0.1) 15 21 54.23
Declination 28 05 39.99 (0.1) 28 05 40.11 28 05 40.00 (0.2) 28 05 40.10 (0.1) 28 05 40.11
Spectral type DA DA DA DAH: DA
Effective temperature [K] 34476.0 (860) 21208.0 33735.0 (519)
log(g) [cgs] 7.66 (0.1) 7.20 7.75 (0.1)
Mass [M] 0.5 (0.06) 0.314
log(Luminosity) [L] -0.42 (0.1)
Cooling age [Gyr] 0.0050 (0.001) 0.0207
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) 1.16 (0.3) 0.93 (0.2)
Distance [pc] 1070.79 (247) 859.50 (222) 1070.78 (247)
Composition H H
Proper motion (right ascension) [mas/yr] 6.83268788 (0.1) 6.521876307 (0.4) 6.833 (0.1)
Proper motion (declination) [mas/yr] -6.67885177 (0.2) -6.831088485 (0.4) -6.679 (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 18.56 (0.02) 18.56 (0.02) 18.56 (0.02)
g magnitude 18.85 (0.008) 18.85 (0.008) 18.86 (0.02)
r magnitude 19.27 (0.01) 19.27 (0.01) 19.26 (0.02)
i magnitude 19.62 (0.02) 19.62 (0.02) 19.64 (0.02)
z magnitude 19.99 (0.08) 19.99 (0.08) 20.00 (0.07)
G magnitude 19.09 (0.02) 19.13 19.09 (0.003)
BP magnitude 18.98 (0.02) 18.88
RP magnitude 19.32 (0.03) 19.29
Pan g magnitude 18.91 (0.005)
Pan r magnitude 19.31 (0.01)
Pan i magnitude 19.66 (0.02)
Pan z magnitude 19.86 (0.02)
Pan y magnitude 19.95 (0.1)
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.