All names: SDSS J171255.02+355914.5, Gaia EDR3 1338388813904333952, J1712+3559, WIRED J171255.01+355914.5, Gaia DR2 1338388813904333952, SDSS J171255.02+355914.6, TIC 9470954, GALEX J171254.9+355914, WDJ171255.03+355914.56, 2MASS J17125503+3559149, SDSS J171254.94+355914.6, Gaia DR3 1338388813904333952
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 17 12 54.89 (0.04) | 17 12 55.02 | 17 12 54.89 (0.06) | 17 12 54.89 | 17 12 55.03 (0.04) | 17 12 54.89 | 17 12 55.02 | ||||||||
Declination | 35 59 14.74 (0.05) | 35 59 14.61 | 35 59 14.74 (0.07) | 35 59 14.74 | 35 59 14.57 (0.05) | 35 59 14.74 | 35 59 14.59 | ||||||||
Spectral type | DQ | DC | DC | DC | DC | DC | DC | DC | |||||||
Effective temperature | [K] | 8309.0 (44) | 8518.0 (45) | 9268.0 | 9059.0 | 8431.0 (94) | 10096.0 (28) | ||||||||
log(g) | [cgs] | 7.91 (0.01) | 7.97 (0.01) | 8.25 | 8.18 | 7.97 (0.02) | 9.46 (0.4) | ||||||||
Mass | [M☉] | 0.527 (0.008) | 0.558 (0.008) | 0.757 | 0.687 | 0.56 (0.02) | |||||||||
log(Luminosity) | [L☉] | ||||||||||||||
Cooling age | [Gyr] | 0.9500 | 1.0630 | 1.0450 | |||||||||||
log(H/He) | -4.0 | ||||||||||||||
log(C/He) | -5.57 | ||||||||||||||
log(Ca/He) | |||||||||||||||
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] | 14.14 (0.05) | 14.10 (0.07) | 14.10 (0.07) | 14.14 | 14.14 (0.05) | 14.10 (0.07) | ||||||||
Distance | [pc] | 70.74 (0.3) | 70.92 (0.4) | 70.94 (0.3) | 70.74 | 70.73 (0.3) | 70.94 (0.3) | ||||||||
Composition | He | He | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -108.8586598 (0.05) | -108.8549421 (0.1) | -108.859 (0.06) | -108.8549421 | ||||||||||
Proper motion (declination) | [mas/yr] | 11.07036576 (0.06) | 11.31927551 (0.1) | 11.07 (0.06) | 11.31927551 | ||||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | |||||||||||||||
B magnitude | |||||||||||||||
V magnitude | |||||||||||||||
R magnitude | |||||||||||||||
I magnitude | |||||||||||||||
J magnitude | 16.88 (0.02) | 16.68 (0.1) | |||||||||||||
H magnitude | 16.31 (0.2) | 16.31 (0.2) | |||||||||||||
K magnitude | 17.16 (0.1) | 17.16 (0.1) | |||||||||||||
u magnitude | 17.41 (0.008) | 17.41 (0.009) | 17.41 (0.008) | 17.44 (0.009) | 17.35 (0.01) | ||||||||||
g magnitude | 17.10 (0.005) | 17.10 (0.005) | 17.09 (0.004) | 17.12 (0.01) | |||||||||||
r magnitude | 17.14 (0.005) | 17.14 (0.005) | 17.14 (0.005) | 17.16 (0.01) | |||||||||||
i magnitude | 17.23 (0.006) | 17.23 (0.006) | 17.24 (0.006) | 17.23 (0.01) | |||||||||||
z magnitude | 17.36 (0.01) | 17.36 (0.01) | 17.40 (0.01) | 17.36 (0.02) | |||||||||||
G magnitude | 17.06 (0.005) | 17.08 | 17.06 | 17.06 (0.003) | 17.08 | ||||||||||
BP magnitude | 17.15 (0.005) | 17.12 | 17.12 | ||||||||||||
RP magnitude | 16.94 (0.008) | 16.93 | 16.93 | ||||||||||||
Pan g magnitude | 17.11 (0.003) | 17.11 (0.003) | |||||||||||||
Pan r magnitude | 17.14 (0.005) | 17.14 (0.006) | |||||||||||||
Pan i magnitude | 17.24 (0.003) | 17.24 (0.003) | |||||||||||||
Pan z magnitude | 17.37 (0.01) | 17.37 (0.01) | |||||||||||||
Pan y magnitude | 17.48 (0.01) | 17.48 (0.01) | |||||||||||||
E(B-V) | 0.009 |
* Constant surface field
Spectra without link are available upon request
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.