SDSS J015715.19+235514.0

All names: SDSS J015715.19+235514.0, Gaia EDR3 104789471081444736, Gaia DR2 104789471081444736, SDSS J015715.19+235514.2, SDSS J015715.19+235514.1, Gaia DR3 104789471081444736, SDSS J015715.19+235514.05, SDSS J015715.18+235514.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 01 57 15.19 (0.2) 01 57 15.19 01 57 15.19 (0.2) 01 57 15.19 01 57 15.19 (0.2)
Declination 23 55 14.01 (0.2) 23 55 14.24 23 55 14.02 (0.2) 23 55 14.01 23 55 14.37 (0.2)
Spectral type DA DA DA DA DA
Effective temperature [K] 12603.0 20152.0 (183) 12756.0 (660)
log(g) [cgs] 7.62 8.08 (0.03) 7.47 (0.1)
Mass [M] 0.414 0.665 (0.02) 0.358 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.1991
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] 3.06 (0.2) 3.11 (0.3) 3.06 3.06 (0.2)
Distance [pc] 326.51 (24) 321.80 (29) 326.51 326.51 (24)
Composition H
Proper motion (right ascension) [mas/yr] 6.465121178 (0.2) 6.728869839 (0.5) 6.465 (0.2)
Proper motion (declination) [mas/yr] -22.57432864 (0.2) -23.43463063 (0.4) -22.574 (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 18.73 (0.02) 18.73 (0.02) 18.73 (0.02)
g magnitude 18.52 (0.007) 18.53 (0.02) 18.52 (0.007)
r magnitude 18.79 (0.01) 18.79 (0.01) 18.79 (0.01)
i magnitude 18.99 (0.01) 19.00 (0.02) 18.99 (0.01)
z magnitude 19.13 (0.05) 19.14 (0.05) 19.13 (0.05)
G magnitude 18.64 (0.01) 18.69 18.64 18.64 (0.004)
BP magnitude 18.63 (0.01) 18.58
RP magnitude 18.63 (0.03) 18.71
Pan g magnitude 18.52 (0.004)
Pan r magnitude 18.77 (0.009)
Pan i magnitude 19.02 (0.01)
Pan z magnitude 19.25 (0.02)
Pan y magnitude 19.26 (0.03)
E(B-V) 0.074

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.