SDSS J152109.83+172355.9

All names: SDSS J152109.83+172355.8, Gaia DR3 1208725808526042240, SDSS J152109.83+172355.9, Gaia EDR3 1208725808526042240, Gaia DR2 1208725808526042240

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 21 09.83 (0.3) 15 21 09.83 15 21 09.83 (0.4) 15 21 09.84 (0.3) 15 21 09.83
Declination 17 23 55.83 (0.3) 17 23 55.89 17 23 55.84 (0.4) 17 23 55.91 (0.3) 17 23 55.90
Spectral type DA DAH: DAH DAH: DA
Effective temperature [K] 16558.8 (320) 13953.0 16628.0 (417)
log(g) [cgs] 8.44 (0.2) 8.32 8.01 (0.09)
Mass [M] 0.8924070045247015 (0.2) 0.811
log(Luminosity) [L]
Cooling age [Gyr] 0.4035
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] 3.04 (0.4) 2.97 (0.5) 3.04 (0.4)
Distance [pc] 328.90 (42) 336.40 (52) 328.90 (42)
Composition H
Proper motion (right ascension) [mas/yr] -8.142288995 (0.4) -8.164655686 (0.8) -8.142 (0.4)
Proper motion (declination) [mas/yr] -4.596660333 (0.4) -3.950979713 (1) -4.597 (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 19.65 (0.03) 19.65 (0.03) 19.69 (0.04)
g magnitude 19.44 (0.01) 19.43 (0.01) 19.45 (0.02)
r magnitude 19.70 (0.02) 19.70 (0.02) 19.72 (0.02)
i magnitude 19.96 (0.03) 19.96 (0.03) 20.00 (0.03)
z magnitude 20.08 (0.1) 20.08 (0.1) 20.07 (0.1)
G magnitude 19.59 (0.06) 19.63 19.59 (0.005)
BP magnitude 19.65 (0.06) 19.56
RP magnitude 19.63 (0.08) 19.63
Pan g magnitude 19.44 (0.01)
Pan r magnitude 19.73 (0.02)
Pan i magnitude 19.98 (0.02)
Pan z magnitude 20.22 (0.04)
Pan y magnitude 19.99 (0.05)
E(B-V) 0.041

* 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.