All names: Gaia DR3 4490567017265616128, J1727+0900, GALEX J172730.9+090052, SDSS J172730.91+090051.6, LAMOST J172730.93+090051.9, WDJ172730.92+090051.98, SDSS J172730.92+090051.7, WDJ172730.92+090051.97, Gaia EDR3 4490567017265616128, Gaia DR2 4490567017265616128
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 17 27 30.92 (0.02) | 17 27 30.92 | 17 27 30.92 | 17 27 30.92 (0.02) | 17 27 30.92 | ||||||||
Declination | 09 00 50.94 (0.02) | 09 00 50.97 | 09 00 50.94 | 09 00 51.98 (0.02) | 09 00 50.97 | ||||||||
Spectral type | DA | DA | DA | DA | DA | ||||||||
Effective temperature | [K] | 20658.0 (270) | 20658.0 (270) | 19223.0 | 22273.0 | 21866.0 (86) | 21008.0 (188) | ||||||
log(g) | [cgs] | 7.98 (0.01) | 7.98 (0.01) | 7.90 | 8.13 | 8.01 (0.01) | 7.99 (0.008) | ||||||
Mass | [M☉] | 0.612 (0.008) | 0.612 (0.008) | 0.566 | 0.678 | 0.63 (0.01) | 0.617 (0.006) | ||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 0.0631 | 0.0596 | ||||||||||
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] | 17.27 (0.03) | 17.29 (0.05) | 17.27 | 17.27 (0.03) | 17.29 (0.05) | |||||||
Distance | [pc] | 57.91 (0.1) | 57.83 (0.2) | 57.91 | 57.91 (0.1) | 57.83 (0.2) | |||||||
Composition | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | 5.581011699 (0.03) | 5.507573476 (0.1) | 5.581 (0.03) | 5.507573476 | ||||||||
Proper motion (declination) | [mas/yr] | -64.89400203 (0.02) | -64.89308119 (0.09) | -64.894 (0.03) | -64.89308119 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | |||||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 14.36 (0.003) | 14.31 (0.003) | |||||||||||
g magnitude | 14.31 (0.003) | 14.24 (0.002) | |||||||||||
r magnitude | 14.75 (0.009) | 14.67 (0.003) | |||||||||||
i magnitude | 14.99 (0.003) | 14.97 (0.003) | |||||||||||
z magnitude | 15.30 (0.005) | 15.26 (0.005) | |||||||||||
G magnitude | 14.49 (0.001) | 14.51 | 14.49 | 14.49 (0.003) | 14.51 | ||||||||
BP magnitude | 14.41 (0.001) | 14.35 | 14.35 | ||||||||||
RP magnitude | 14.68 (0.001) | 14.69 | 14.69 | ||||||||||
Pan g magnitude | 14.36 (0.003) | ||||||||||||
Pan r magnitude | 14.70 (0.004) | ||||||||||||
Pan i magnitude | 15.02 (0.002) | ||||||||||||
Pan z magnitude | 15.28 (0.004) | ||||||||||||
Pan y magnitude | 15.45 (0.005) | ||||||||||||
E(B-V) | 0.002 |
* 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.