All names: TIC 270679102, SDSS J090812.04+060421.3, Gaia EDR3 580790014913812608, Gaia DR3 580790014913812608, WD 0905+062, LAMOST J090812.04+060421.2, Gaia DR2 580790014913812608, WIRED J090812.04+060421.2, GALEX J090812.1+060420, [SGR2010] J0908+0604, 2MASS J09081205+0604211, [HHD2009] SDSS J0908+0604, CRTS J090812.0+060421, ATO J137.0501+06.0725, SDSS J090812.03+060421.2, SDSS J090812.04+060421.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 08 12.04 (0.08) | 09 08 12.04 | 09 08 12.04 (0.2) | 09 08 12.04 | 09 08 12.04 | 09 08 12.04 (0.08) | 09 08 12.04 | 09 08 11.69 | 09 08 12.04 | ||||||
| Declination | 06 04 21.08 (0.07) | 06 04 21.22 | 06 04 21.09 (0.3) | 06 04 21.22 | 06 04 21.08 | 06 04 21.23 (0.07) | 06 04 21.21 | 06 04 14.52 | 06 04 21.27 | ||||||
| Spectral type | DA+M | DA+M | DA | DA | DA+M | DA+M | DA dM | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 17505.0 (242) | 17960.0 (260) | 17067.0 (150) | 16993.0 (143) | ||||||||||
| log(g) | [cgs] | 7.44 (0.06) | 7.43 (0.05) | 7.05 (0.04) | 7.03 (0.03) | ||||||||||
| Mass | [M☉] | 0.37 (0.02) | 0.4 (0.01) | ||||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.1047 | |||||||||||||
| 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] | 3.71 (0.09) | 3.71 | 3.71 (0.09) | |||||||||||
| Distance | [pc] | 269.39 (7) | 269.39 | 269.39 (7) | |||||||||||
| Composition | H | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -2.364751173 (0.09) | -2.365 (0.09) | -0.2 | |||||||||||
| Proper motion (declination) | [mas/yr] | -9.485280228 (0.08) | -9.485 (0.08) | -5.5 | |||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | |||||||||||
| B magnitude | |||||||||||||||
| V magnitude | 17.15 | ||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 15.40 (0.004) | ||||||||||||||
| H magnitude | 15.07 (0.007) | ||||||||||||||
| K magnitude | 14.68 (0.007) | ||||||||||||||
| u magnitude | 17.36 (0.009) | 17.32 | 17.36 (0.009) | 17.32 (0.01) | 17.32 | 17.35 (0.02) | |||||||||
| g magnitude | 17.11 (0.004) | 17.06 | 17.08 (0.004) | 17.06 (0.02) | 17.06 | 17.06 (0.02) | |||||||||
| r magnitude | 17.28 (0.005) | 17.28 | 17.27 (0.005) | 17.28 (0.02) | 17.28 | 17.27 (0.02) | |||||||||
| i magnitude | 17.07 (0.005) | 17.07 | 17.07 (0.005) | 17.07 (0.01) | 17.07 | 17.07 (0.01) | |||||||||
| z magnitude | 16.70 (0.009) | 16.68 | 16.70 (0.009) | 16.68 (0.02) | 16.68 | 16.68 (0.02) | |||||||||
| G magnitude | 17.07 (0.008) | 17.08 | 17.07 | 17.07 (0.003) | |||||||||||
| BP magnitude | 17.24 (0.008) | 17.23 | |||||||||||||
| RP magnitude | 16.67 (0.008) | 16.68 | |||||||||||||
| Pan g magnitude | 17.15 (0.005) | ||||||||||||||
| Pan r magnitude | 17.30 (0.009) | ||||||||||||||
| Pan i magnitude | 17.09 (0.005) | ||||||||||||||
| Pan z magnitude | 16.78 (0.01) | ||||||||||||||
| Pan y magnitude | 16.59 (0.007) | ||||||||||||||
| E(B-V) | 0.024 | ||||||||||||||
* 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.