All names: WD 0904+278, WDJ090730.31+273629.07, SDSS J090730.32+273628.4, GALEX J090730.3+273628, Gaia EDR3 692134636881870208, WIRED J090730.32+273628.5, SDSS J090730.33+273628.5, Gaia DR2 692134636881870208, J0907+2736, Gaia DR3 692134636881870208, SDSS J090730.32+273628.5, LP 313-12, USNO-B1.0 1176-00215866
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 09 07 30.37 (0.1) | 09 07 30.32 | 09 07 30.37 (0.2) | 09 07 30.37 | 09 07 30.31 (0.1) | 09 07 30.37 | 09 07 27.91 | 09 07 30.33 | ||||||||
Declination | 27 36 26.95 (0.09) | 27 36 28.49 | 27 36 27.01 (0.1) | 27 36 26.95 | 27 36 29.06 (0.09) | 27 36 27.01 | 27 36 53.28 | 27 36 28.51 | ||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | |||||||
Effective temperature | [K] | 7522.0 (62) | 7557.0 (58) | 7517.0 (62) | 7403.0 | 7472.0 (134) | 7478.0 (42) | |||||||||
log(g) | [cgs] | 8.03 (0.02) | 8.12 (0.03) | 8.11 (0.03) | 8.08 | 8.01 (0.04) | 8.12 (0.07) | |||||||||
Mass | [M☉] | 0.609 (0.02) | 0.668 (0.03) | 0.661 (0.03) | 0.642 | 0.601 (0.03) | 0.663 (0.04) | |||||||||
log(Luminosity) | [L☉] | |||||||||||||||
Cooling age | [Gyr] | 1.5500 | 1.4620 | |||||||||||||
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] | 11.40 (0.2) | 12.06 (0.3) | 12.06 (0.3) | 11.40 | 11.40 (0.2) | 12.06 (0.3) | |||||||||
Distance | [pc] | 87.74 (1) | 82.92 (2) | 82.89 (2) | 87.74 | 87.74 (1) | 82.89 (2) | |||||||||
Composition | H | H | H | |||||||||||||
Proper motion (right ascension) | [mas/yr] | 52.06892683 (0.1) | 52.48587352 (0.4) | 52.069 (0.1) | 52.48587352 | |||||||||||
Proper motion (declination) | [mas/yr] | -132.3505102 (0.1) | -132.5625891 (0.3) | -132.351 (0.1) | -132.5625891 | |||||||||||
Variability | ||||||||||||||||
Magnetic | ||||||||||||||||
Bd | [MG] | |||||||||||||||
Infrared excess (disk) | ||||||||||||||||
Binarity | yes | |||||||||||||||
B magnitude | 17.70 | |||||||||||||||
V magnitude | 17.97 | |||||||||||||||
R magnitude | 17.90 | |||||||||||||||
I magnitude | ||||||||||||||||
J magnitude | 17.38 (0.03) | |||||||||||||||
H magnitude | ||||||||||||||||
K magnitude | ||||||||||||||||
u magnitude | 18.54 (0.02) | 18.51 (0.02) | 18.54 (0.02) | 18.54 (0.02) | 18.50 (0.03) | |||||||||||
g magnitude | 18.07 (0.006) | 18.07 (0.006) | 18.07 (0.006) | 18.08 (0.01) | ||||||||||||
r magnitude | 17.96 (0.007) | 17.97 (0.007) | 17.96 (0.007) | 17.96 (0.02) | ||||||||||||
i magnitude | 17.96 (0.008) | 17.96 (0.008) | 17.96 (0.008) | 17.95 (0.01) | ||||||||||||
z magnitude | 18.03 (0.02) | 18.03 (0.02) | 18.03 (0.02) | 18.03 (0.02) | ||||||||||||
G magnitude | 17.93 (0.02) | 17.95 | 17.93 | 17.93 (0.003) | 17.95 | |||||||||||
BP magnitude | 18.08 (0.02) | 18.05 | 18.05 | |||||||||||||
RP magnitude | 17.62 (0.02) | 17.60 | 17.60 | |||||||||||||
Pan g magnitude | 18.08 (0.007) | 18.08 (0.009) | ||||||||||||||
Pan r magnitude | 17.96 (0.006) | 17.96 (0.006) | ||||||||||||||
Pan i magnitude | 17.97 (0.003) | 17.97 (0.003) | ||||||||||||||
Pan z magnitude | 18.03 (0.006) | 18.03 (0.005) | ||||||||||||||
Pan y magnitude | 18.07 (0.01) | 18.07 (0.01) | ||||||||||||||
E(B-V) | 0.003 |
* 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.