All names: SDSS J164448.07+293059.36, Gaia DR3 1311400815668233344, SDSS J164448.08+293059.3, SDSS J164448.07+293059.3, Gaia EDR3 1311400815668233344, GALEX J164448.1+293059, Gaia DR2 1311400815668233344
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 44 48.06 (0.1) | 16 44 48.08 | 16 44 48.06 (0.2) | 16 44 48.06 | 16 44 48.09 (0.1) | ||||||
Declination | 29 30 59.39 (0.1) | 29 30 59.38 | 29 30 59.38 (0.2) | 29 30 59.39 | 29 30 59.32 (0.1) | ||||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 13621.0 | 17612.0 (21) | 17852.0 (1221) | |||||||
log(g) | [cgs] | 7.75 | 8.13 (0.03) | 8.06 (0.09) | |||||||
Mass | [M☉] | 0.475 | 0.687 (0.02) | 0.657 (0.07) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.1826 | |||||||||
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] | 2.77 (0.2) | 2.70 (0.2) | 2.77 | 2.77 (0.2) | ||||||
Distance | [pc] | 360.59 (21) | 370.57 (29) | 360.59 | 360.59 (21) | ||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -21.68712791 (0.2) | -21.97589363 (0.4) | -21.687 (0.2) | |||||||
Proper motion (declination) | [mas/yr] | 3.879184124 (0.2) | 2.757542874 (0.4) | 3.879 (0.2) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | 19.40 (0.1) | ||||||||||
H magnitude | 19.70 (0.3) | ||||||||||
K magnitude | |||||||||||
u magnitude | 19.09 (0.02) | 19.07 (0.03) | 19.09 (0.02) | ||||||||
g magnitude | 18.82 (0.008) | 18.84 (0.02) | 18.82 (0.008) | ||||||||
r magnitude | 19.16 (0.01) | 19.15 (0.01) | 19.16 (0.01) | ||||||||
i magnitude | 19.39 (0.02) | 19.38 (0.02) | 19.39 (0.02) | ||||||||
z magnitude | 19.64 (0.06) | 19.66 (0.06) | 19.64 (0.07) | ||||||||
G magnitude | 18.97 (0.02) | 19.01 | 18.97 | 18.97 (0.003) | |||||||
BP magnitude | 18.98 (0.02) | 18.87 | |||||||||
RP magnitude | 19.08 (0.04) | 19.09 | |||||||||
Pan g magnitude | 18.84 (0.007) | ||||||||||
Pan r magnitude | 19.13 (0.007) | ||||||||||
Pan i magnitude | 19.39 (0.01) | ||||||||||
Pan z magnitude | 19.63 (0.02) | ||||||||||
Pan y magnitude | 19.62 (0.03) | ||||||||||
E(B-V) | 0.023 |
* 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.