WD 1445+15

All names: PSO J144814.276+150449.746, Gaia DR2 2363965672055370112, Gaia DR2 1186283676691133952, 2MASS J14481438+1504499, PG 1445+153, D 1445+152, WD 1445+152, SDSS J144814.33+150449.7, SDSS J144814.32+150449.6

Parameter Unit Pan-STARRS DR1 Gaia DR2 Gaia DR2 Koester & Kepler (2015) Bergeron et al. 2011 Voss et al. 2007 Beauchamp et al. 1999 Beauchamp et al. 1999 SDSS DR12 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 14 48 14.24 (0.06) 14 48 14.24 (0.06) 14 48 14.33 14 48 14.38 14 48 14.69 14 48 14.33
Declination 15 04 49.68 (0.05) 15 04 49.68 (0.05) 15 04 49.63 15 04 49.93 15 04 44.40 15 04 49.70
Spectral type DB DB DB DB DB2 DB
Effective temperature [K] 20327.0 (121) 20960.0 (840) 23234.0 23600.0 22200.0 23130.0 (191)
log(g) [cgs] 7.93 (0.02) 8.05 (0.08) 8.01 7.95 7.97 7.97 (0.02)
Mass [M] 0.63 (0.04) 0.611 0.584 (0.009)
log(Luminosity) [L] -1.57
Cooling age [Gyr] 0.0692
log(H/He) -4.46 (0) <-5.12 (3)
log(C/He)
log(Ca/He) -5.52 (0)
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] 8.85 (0.06) 8.85 (0.06)
Distance [pc] 113.00 (0.8) 113.00 (0.8) 119.00 95.00
Composition He
Proper motion (right ascension) [mas/yr] -124.7831486 (0.1) -124.783 (0.1)
Proper motion (declination) [mas/yr] -3.517837859 (0.1) -3.518 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.55 15.55
V magnitude 15.55 15.60
R magnitude
I magnitude
J magnitude 16.35
H magnitude
K magnitude
u magnitude 15.62 (0.005) 15.66 15.66 (0.02)
g magnitude 15.72 (0.003) 15.73 15.73 (0.02)
r magnitude 16.08 (0.004) 16.07 16.07 (0.02)
i magnitude 16.38 (0.004) 16.39 16.39 (0.01)
z magnitude 16.68 (0.009) 16.67 16.67 (0.02)
G magnitude 15.92 15.92
BP magnitude 15.78 15.78
RP magnitude 16.07 16.07
Pan g magnitude 15.80 (0.005)
Pan r magnitude 16.10 (0.005)
Pan i magnitude 16.40 (0.004)
Pan z magnitude 16.64 (0.004)
Pan y magnitude 16.79 (0.006)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.