PHL 1387

All names: Gaia DR2 5178915236744648576, Gaia EDR3 5178915236744648576, Gaia DR3 5178915236744648576, SDSS J023543.18-055442.0, PHL 1387, SDSS J023543.16-055441.9, SDSS J023543.18-055442.07, GALEX J023543.1-055441

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 02 35 43.20 (0.1) 02 35 43.17 02 35 43.20 (0.1) 02 35 43.15 (0.1)
Declination -05 54 42.22 (0.1) -05 54 41.92 -05 54 42.20 (0.1) -05 54 41.71 (0.1)
Spectral type DA DA DA DA
Effective temperature [K] 15243.0 18944.0 (100)
log(g) [cgs] 7.59 7.88 (0)
Mass [M] 0.412 0.561 (0)
log(Luminosity) [L]
Cooling age [Gyr] 0.1010
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] 3.64 (0.1) 3.59 (0.1) 3.64 (0.1)
Distance [pc] 274.44 (9) 278.74 (10) 274.44 (9)
Composition H
Proper motion (right ascension) [mas/yr] 48.65038499 (0.2) 48.88126938 (0.3) 48.65 (0.2)
Proper motion (declination) [mas/yr] -31.73765468 (0.1) -32.14270982 (0.2) -31.738 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.40
V magnitude 17.60
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.95 (0.01) 17.95 (0.01) 17.95 (0.01)
g magnitude 17.76 (0.006) 17.76 (0.01) 17.76 (0.006)
r magnitude 18.09 (0.007) 18.09 (0.01) 18.09 (0.007)
i magnitude 18.35 (0.01) 18.35 (0.01) 18.35 (0.01)
z magnitude 18.63 (0.03) 18.63 (0.03) 18.63 (0.03)
G magnitude 17.93 (0.02) 17.96 17.93 (0.003)
BP magnitude 17.87 (0.02) 17.83
RP magnitude 18.25 (0.08) 18.04
Pan g magnitude 17.79 (0.008)
Pan r magnitude 18.08 (0.004)
Pan i magnitude 18.37 (0.006)
Pan z magnitude 18.61 (0.007)
Pan y magnitude 18.76 (0.03)
E(B-V) 0.022

* 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.