SDSS J001557.38+183034.6

All names: Gaia DR3 2797320927258478464, SDSS J001557.38+183034.6, SDSS J001557.38+183034.66, J0015+1830, Gaia DR2 2797320927258478464, Gaia EDR3 2797320927258478464

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 00 15 57.37 (1) 00 15 57.37 00 15 57.37 00 15 57.37 (4) 00 15 57.38 (1)
Declination 18 30 34.43 (1) 18 30 34.62 18 30 34.45 18 30 34.45 (2) 18 30 35.10 (1)
Spectral type DZ DZ DZ DZ
Effective temperature [K] 7346.0 (417) 7193.0 (130)
log(g) [cgs] 8.00 8.00 (0)
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr] 0.0000
log(H/He) <-4.0699
log(C/He)
log(Ca/He) -8.8586 (0.3) -8.714
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] -0.74 (2)
Distance [pc] 319.97 (26)
Composition He He
Proper motion (right ascension) [mas/yr] -9.444305228 (2) -9.444 (2)
Proper motion (declination) [mas/yr] -41.49894363 (2) -41.499 (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 21.84 (0.2) 21.75 (0.2) 21.75 (0.2)
g magnitude 20.88 (0.04) 20.89 (0.04) 20.89 (0.04)
r magnitude 20.81 (0.05) 20.82 (0.05) 20.82 (0.05)
i magnitude 20.90 (0.07) 20.90 (0.08) 20.90 (0.08)
z magnitude 20.76 (0.2) 20.65 (0.4) 20.65 (0.4)
G magnitude 20.84 (0.2) 20.95 20.84 (0.01)
BP magnitude 21.01 (0.2) 21.00
RP magnitude 20.96 (0.1) 20.63
Pan g magnitude 20.92 (0.03)
Pan r magnitude 20.79 (0.03)
Pan i magnitude 20.97 (0.04)
Pan z magnitude 21.02 (0.07)
Pan y magnitude
E(B-V) 0.045

* 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.