SDSS J152138.99+103015.7

All names: GALEX J152138.9+103016, Gaia DR2 1168812406861864320, Gaia DR3 1168812406861864320, SDSS J152139.00+103015.8, Gaia EDR3 1168812406861864320, SDSS J152138.99+103015.7, SDSS J152139.00+103015.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 21 38.99 (0.05) 15 21 39.00 15 21 38.99 (0.07) 15 21 38.99 15 21 39.00 (0.05) 15 21 39.00
Declination 10 30 15.41 (0.05) 10 30 15.72 10 30 15.42 (0.07) 10 30 15.41 10 30 15.83 (0.05) 10 30 15.76
Spectral type DA DA DA DA DA DA
Effective temperature [K] 56062.0 (1102) 29171.0 41334.0 (3275) 56949.0 (965)
log(g) [cgs] 7.24 (0.07) 7.20 7.59 (0.05) 7.43 (0.06)
Mass [M] 0.42 (0.02) 0.347 0.494 (0.03) 0.501 (0.02)
log(Luminosity) [L] 0.77 (0.06)
Cooling age [Gyr] 0.0001 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] 2.83 (0.06) 2.73 (0.08) 2.83 2.83 (0.06)
Distance [pc] 353.63 (7) 366.52 (11) 353.63 353.63 (7)
Composition H H
Proper motion (right ascension) [mas/yr] -6.709209756 (0.06) -6.58344389 (0.1) -6.709 (0.07)
Proper motion (declination) [mas/yr] -25.9094609 (0.06) -25.70479828 (0.1) -25.909 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.22 (0.02)
H magnitude 17.34 (0.05)
K magnitude 17.38 (0.07)
u magnitude 15.88 (0.006) 15.88 (0.006) 15.89 (0.02)
g magnitude 16.25 (0.004) 16.25 (0.004) 16.28 (0.01)
r magnitude 16.75 (0.005) 16.75 (0.005) 16.75 (0.01)
i magnitude 17.10 (0.006) 17.10 (0.006) 17.10 (0.01)
z magnitude 17.42 (0.01) 17.42 (0.01) 17.43 (0.02)
G magnitude 16.50 (0.006) 16.53 16.50 16.50 (0.003)
BP magnitude 16.36 (0.006) 16.32
RP magnitude 16.80 (0.007) 16.80
Pan g magnitude 16.31 (0.003)
Pan r magnitude 16.76 (0.004)
Pan i magnitude 17.13 (0.006)
Pan z magnitude 17.40 (0.009)
Pan y magnitude 17.61 (0.02)
E(B-V) 0.029

* 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.