SDSS J172329.14+540755.8

All names: SDSS J172329.15+540755.8, SDSS J172329.14+540755.7, SDSS J172329.14+540755.8, WD 1722+541, PSO J172329.212+540755.058, Gaia DR2 1419410069111484928

Parameter Unit MWDD H Pan-STARRS DR1 Gaia DR2 Ferrario et al. 2015 Kulebi et al. 2009 Harris et al. 2003 SDSS DR12 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 17 23 29.22 (0.2) 17 23 29.14 17 23 29.14 17 23 29.14 17 23 28.51 17 23 29.14
Declination 54 07 54.77 (0.2) 54 07 55.81 54 07 55.77 54 07 55.82 54 07 54.84 54 07 55.82
Spectral type DA DA DAH DAH DAH DAH3.1 DAH
Effective temperature [K] 10402.0 10000.0 10157.0 (92)
log(g) [cgs] 8.82 8.00 (0) 9.15 (0.5)
Mass [M] 1.112
log(Luminosity) [L]
Cooling age [Gyr] 2.1520
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] 8.55 (0.2)
Distance [pc] 116.92 (3)
Composition H H
Proper motion (right ascension) [mas/yr] 43.2628517863 (0.3) 3.0
Proper motion (declination) [mas/yr] -65.4212564799 (0.5) -6.0
Variability
Magnetic yes yes yes yes
Bd [MG] 32.85 (4) 32.85 (4)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.10 19.10 (0.02) 19.09 19.14 19.09 (0.03)
g magnitude 18.78 18.79 (0.008) 18.80 18.81 18.80 (0.02)
r magnitude 18.85 18.86 (0.01) 18.83 18.90 18.83 (0.02)
i magnitude 19.01 19.02 (0.01) 19.03 19.04 19.03 (0.02)
z magnitude 19.27 19.25 (0.06) 19.27 19.30 19.27 (0.06)
G magnitude 18.84
BP magnitude 18.85
RP magnitude 18.70
Pan g magnitude 18.78 (0.009)
Pan r magnitude 18.90 (0.01)
Pan i magnitude 19.06 (0.004)
Pan z magnitude 19.16 (0.03)
Pan y magnitude 19.30 (0.05)

* 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.