All names: SDSS J091621.82+052119.0, WDS J09164+0521AB, SDSS J091621.81+052119.0, ** SKF 1717, SDSS J091621.83+052119.1, WISE J091621.78+052118.2, WISEA J091621.78+052118.3, 2MASS J09162179+0521182, TIC 290488448, SDSS J091621.83+052119.2, WD 0913+055, WIRED J091621.83+052119.1, Gaia EDR3 579780182202813952
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Bedard et al. 2020 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 16 21.83 (0.07) | 09 16 21.82 | 09 16 21.83 | 09 16 21.82 | 09 16 21.83 | 09 16 21.96 | 09 16 21.83 | |||
| Declination | 05 21 19.16 (0.06) | 05 21 19.01 | 05 21 19.12 | 05 21 19.01 | 05 21 19.18 | 05 21 14.40 | 05 21 19.18 | |||
| Spectral type | DO+M | DB+M | DO+M | DO+M | DO | DOM | ||||
| Effective temperature | [K] | 56877.0 (896) | 16051.0 (15) | 12335.0 (133) | 11576.0 (255) | |||||
| log(g) | [cgs] | 8.19 (0.1) | 8.42 (0.02) | 8.36 (0.1) | 8.18 (0.2) | |||||
| Mass | [M☉] | 0.76 (0.06) | ||||||||
| log(Luminosity) | [L☉] | 0.10 (0.07) | ||||||||
| Cooling age | [Gyr] | 0.0014 (0.0001) | ||||||||
| log(H/He) | ||||||||||
| 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] | 2.49 (0.09) | ||||||||
| Distance | [pc] | 402.19 (15) | 183.00 (7) | |||||||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.281891569 (0.1) | -4.0 (2) | 6.3 | ||||||
| Proper motion (declination) | [mas/yr] | -4.21133969 (0.08) | 4.0 (2) | 3.3 | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | 16.24 | |||||||||
| V magnitude | 16.94 | |||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 14.84 (0.05) | |||||||||
| H magnitude | 14.24 (0.04) | |||||||||
| K magnitude | 14.00 (0.07) | |||||||||
| u magnitude | 16.30 (0.006) | 16.30 | 16.30 (0.006) | 16.30 (0.01) | 16.66 | 16.30 (0.02) | ||||
| g magnitude | 16.58 (0.004) | 16.66 | 16.57 (0.004) | 16.66 (0.03) | 16.66 | 16.66 (0.03) | ||||
| r magnitude | 16.66 (0.004) | 17.06 | 16.66 (0.004) | 17.06 (0.04) | 17.05 (0.04) | |||||
| i magnitude | 16.29 (0.004) | 17.32 | 16.29 (0.004) | 17.32 (0.07) | 17.31 (0.07) | |||||
| z magnitude | 15.94 (0.007) | 17.58 | 15.95 (0.007) | 17.58 (0.2) | 17.57 (0.1) | |||||
| G magnitude | 16.96 (0.01) | |||||||||
| BP magnitude | 16.66 (0.01) | |||||||||
| RP magnitude | 16.14 (0.05) | |||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.029 | |||||||||
* 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.