SDSS J152112.89+561610.3

All names: SDSS J152112.87+561610.1, GALEX J152112.9+561609, SDSS J152112.88+561610.3, SDSS J152112.89+561610.3, Gaia DR3 1600725721285201408, Gaia DR2 1600725721285201408, SDSS J152112.89+561610.34, Gaia EDR3 1600725721285201408

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 15 21 12.87 (0.2) 15 21 12.88 15 21 12.87 (0.3) 15 21 12.88 (0.2)
Declination 56 16 09.89 (0.3) 56 16 10.17 56 16 09.90 (0.4) 56 16 10.13 (0.3)
Spectral type DA DA DA DA
Effective temperature [K] 8460.0 9355.0 (59)
log(g) [cgs] 6.94 8.13 (0.09)
Mass [M] 0.196 0.526 (0.04)
log(Luminosity) [L]
Cooling age [Gyr]
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] 2.07 (0.3) 2.23 (0.4) 2.07 (0.3)
Distance [pc] 481.98 (65) 447.66 (80) 481.97 (65)
Composition H
Proper motion (right ascension) [mas/yr] -8.245725112 (0.3) -8.173712676 (0.7) -8.246 (0.3)
Proper motion (declination) [mas/yr] -15.00236159 (0.4) -15.72875464 (0.9) -15.002 (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 20.07 (0.04) 20.07 (0.04) 20.06 (0.04)
g magnitude 19.59 (0.01) 19.61 (0.02) 19.59 (0.01)
r magnitude 19.64 (0.02) 19.68 (0.02) 19.64 (0.02)
i magnitude 19.67 (0.02) 19.71 (0.02) 19.67 (0.02)
z magnitude 19.66 (0.07) 19.67 (0.07) 19.67 (0.07)
G magnitude 19.56 (0.04) 19.61 19.56 (0.004)
BP magnitude 19.74 (0.04) 19.66
RP magnitude 19.37 (0.05) 19.38
Pan g magnitude 19.60 (0.02)
Pan r magnitude 19.61 (0.005)
Pan i magnitude 19.69 (0.01)
Pan z magnitude 19.80 (0.02)
Pan y magnitude 19.70 (0.08)
E(B-V) 0.020

* 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.