All names: 2MASS J07542936+6611065, WDJ075429.35+661106.64, Gaia DR3 1094919590481107968, USNO-B1.0 1561-00115200, GD 454, Gaia DR2 1094919590481107968, SDSS J075429.33+661105.7, J0754+6611, TIC 457099062, GALEX J075429.2+661106, Gaia EDR3 1094919590481107968, LSPM J0754+6611
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 07 54 29.27 (0.03) | 07 54 29.27 | 07 54 29.27 | 07 54 29.35 (0.03) | 07 54 29.27 | ||||||||
Declination | 66 11 03.54 (0.04) | 66 11 03.63 | 66 11 03.54 | 66 11 06.64 (0.04) | 66 11 03.63 | ||||||||
Spectral type | DC | DC | DC | DC: | DC | ||||||||
Effective temperature | [K] | 6655.0 (26) | 6702.0 (24) | 6655.0 (26) | 7335.0 | 7056.0 | 6573.0 (41) | ||||||
log(g) | [cgs] | 7.97 (0.007) | 7.98 (0.007) | 7.97 (0.008) | 8.27 | 8.16 | 7.99 (0.01) | ||||||
Mass | [M☉] | 0.557 (0.006) | 0.564 (0.006) | 0.555 (0.006) | 0.762 | 0.677 | 0.566 (0.009) | ||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 1.7700 | 2.2370 | 2.0750 | |||||||||
log(H/He) | -3.2 | -3.2 | -3.2 | ||||||||||
log(C/He) | |||||||||||||
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] | 24.26 (0.06) | 24.24 (0.07) | 24.24 (0.07) | 24.26 | 24.26 (0.06) | 24.24 (0.07) | ||||||
Distance | [pc] | 41.22 (0.1) | 41.25 (0.1) | 41.26 (0.1) | 41.22 | 41.22 (0.1) | 41.26 (0.1) | ||||||
Composition | He | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -29.7312832 (0.03) | -29.62751794 (0.07) | -29.731 (0.04) | -29.62751794 | ||||||||
Proper motion (declination) | [mas/yr] | -193.9861077 (0.04) | -194.0598538 (0.1) | -193.986 (0.04) | -194.0598538 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | 16.50 | ||||||||||||
V magnitude | |||||||||||||
R magnitude | 16.40 | ||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.18 (0.09) | 16.18 (0.09) | |||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 17.46 (0.01) | 17.47 (0.01) | 17.47 (0.01) | ||||||||||
g magnitude | 16.94 (0.005) | 16.94 (0.005) | |||||||||||
r magnitude | 16.77 (0.005) | 16.77 (0.005) | |||||||||||
i magnitude | 16.74 (0.006) | 16.74 (0.006) | |||||||||||
z magnitude | 16.82 (0.01) | 16.82 (0.01) | |||||||||||
G magnitude | 16.72 (0.005) | 16.73 | 16.72 | 16.72 (0.003) | 16.73 | ||||||||
BP magnitude | 16.89 (0.005) | 16.89 | 16.89 | ||||||||||
RP magnitude | 16.42 (0.005) | 16.41 | 16.41 | ||||||||||
Pan g magnitude | 16.90 (0.004) | 16.90 (0.003) | |||||||||||
Pan r magnitude | 16.75 (0.004) | 16.75 (0.005) | |||||||||||
Pan i magnitude | 16.74 (0.002) | 16.74 (0.002) | |||||||||||
Pan z magnitude | 16.79 (0.005) | 16.79 (0.005) | |||||||||||
Pan y magnitude | 16.90 (0.008) | 16.90 (0.008) | |||||||||||
E(B-V) | 0.001 |
* 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.