All names: Gaia DR2 1355979969155873792, WD 1637+406, Gaia EDR3 1355979969155873792, J1639+4030, PSO J249.8346+40.5117, SDSS J163920.30+403041.5, TIC 68934541, WIRED J163920.29+403041.5, WDJ163920.29+403041.44, LAMOST J163920.29+403041.5, GALEX J163920.3+403041, SDSS J163920.29+403041.5, 2MASS J16392030+4030413, Gaia DR3 1355979969155873792, [CCS88] 1637.7+4036, SDSS J163920.29+403041.4, SDSS J163920.29+403041.6
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 39 20.32 (0.05) | 16 39 20.29 | 16 39 20.31 (0.06) | 16 39 20.32 | 16 39 20.29 (0.05) | 16 39 20.31 | 16 39 20.29 | 16 39 20.18 | 16 39 20.30 | |||||||||||
Declination | 40 30 42.35 (0.06) | 40 30 41.55 | 40 30 42.32 (0.07) | 40 30 42.35 | 40 30 41.45 (0.06) | 40 30 42.32 | 40 30 41.56 | 40 30 35.28 | 40 30 41.52 | |||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
Effective temperature | [K] | 8308.0 (58) | 8275.0 (48) | 8309.0 (58) | 8200.0 (95) | 8267.0 | 8320.0 (20) | 8439.0 (90) | 8561.0 (19) | 8235.0 (22) | ||||||||||
log(g) | [cgs] | 8.13 (0.01) | 8.12 (0.01) | 8.13 (0.01) | 8.11 (0.03) | 8.12 | 8.32 (0.03) | 8.17 (0.02) | 8.48 (0.02) | 8.18 (0.03) | ||||||||||
Mass | [M☉] | 0.678 (0.009) | 0.668 (0.009) | 0.675 (0.009) | 0.664 (0.02) | 0.669 | 0.8 (0.02) | 0.698 (0.02) | 0.701 (0.02) | |||||||||||
log(Luminosity) | [L☉] | |||||||||||||||||||
Cooling age | [Gyr] | 1.2200 | 1.1900 (0.06) | 1.1800 | 1.6596 | |||||||||||||||
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] | 16.03 (0.06) | 15.98 (0.07) | 15.98 (0.07) | 15.98 (0.07) | 16.03 | 16.03 (0.06) | 15.98 (0.07) | ||||||||||||
Distance | [pc] | 62.38 (0.2) | 62.58 (0.3) | 62.58 (0.3) | 62.58 (0.3) | 62.38 | 62.38 (0.2) | 62.58 (0.3) | ||||||||||||
Composition | H | H | H | H | H | |||||||||||||||
Proper motion (right ascension) | [mas/yr] | 18.97137523 (0.06) | 19.09318818 (0.1) | 18.971 (0.06) | 19.093 | 20.2 | ||||||||||||||
Proper motion (declination) | [mas/yr] | 55.94130275 (0.08) | 56.36599149 (0.2) | 55.941 (0.08) | 56.366 | 56.5 | ||||||||||||||
Variability | ||||||||||||||||||||
Magnetic | ||||||||||||||||||||
Bd | [MG] | |||||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||||
Binarity | ||||||||||||||||||||
B magnitude | 17.00 | |||||||||||||||||||
V magnitude | ||||||||||||||||||||
R magnitude | ||||||||||||||||||||
I magnitude | ||||||||||||||||||||
J magnitude | 16.59 (0.02) | 16.51 (0.1) | 16.51 (0.1) | |||||||||||||||||
H magnitude | 16.36 (0.1) | 16.36 (0.1) | ||||||||||||||||||
K magnitude | 15.73 (0.2) | 15.73 (0.2) | ||||||||||||||||||
u magnitude | 17.49 (0.009) | 17.48 (0.009) | 17.49 (0.009) | 17.49 (0.009) | 17.51 (0.02) | 17.50 | 17.48 (0.02) | |||||||||||||
g magnitude | 17.06 (0.004) | 17.07 (0.007) | 17.08 (0.004) | 17.08 (0.02) | 17.08 | 17.07 (0.02) | ||||||||||||||
r magnitude | 17.03 (0.004) | 17.05 (0.006) | 17.04 (0.004) | 17.04 (0.01) | 17.03 | 17.03 (0.01) | ||||||||||||||
i magnitude | 17.08 (0.005) | 17.09 (0.003) | 17.06 (0.005) | 17.11 (0.01) | 17.10 | 17.09 (0.01) | ||||||||||||||
z magnitude | 17.18 (0.01) | 17.18 (0.003) | 17.17 (0.01) | 17.18 (0.02) | 17.18 | 17.16 (0.02) | ||||||||||||||
G magnitude | 16.98 (0.006) | 17.00 | 16.98 | 16.98 (0.003) | 17.00 | |||||||||||||||
BP magnitude | 17.10 (0.006) | 17.11 | 17.11 | |||||||||||||||||
RP magnitude | 16.77 (0.004) | 16.77 | 16.77 | |||||||||||||||||
Pan g magnitude | 17.07 (0.006) | 17.07 (0.007) | 17.07 (0.007) | |||||||||||||||||
Pan r magnitude | 17.05 (0.005) | 17.05 (0.006) | 17.05 (0.006) | |||||||||||||||||
Pan i magnitude | 17.09 (0.002) | 17.09 (0.003) | 17.09 (0.003) | |||||||||||||||||
Pan z magnitude | 17.18 (0.003) | 17.18 (0.003) | 17.18 (0.003) | |||||||||||||||||
Pan y magnitude | 17.26 (0.007) | 17.26 (0.008) | 17.27 (0.008) | |||||||||||||||||
E(B-V) | 0.008 |
* 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.