All names: Gaia DR2 77451939817925888, SDSS J020906.07+142520.8, Gaia DR3 77451939817925888, J0209+1425, GALEX J020906.0+142520, SDSS J020906.07+142520.4, SDSS J020906.07+142520.7, WD 0206+141, Gaia EDR3 77451939817925888, SDSS J020906.08+142520.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Dufour et al. 2005 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 09 06.04 (0.4) | 02 09 06.07 | 02 09 06.07 | 02 09 06.05 (0.6) | 02 09 06.07 (0.4) | 02 09 06.08 | 02 09 05.76 | 02 09 06.07 | ||||
| Declination | 14 25 20.07 (0.3) | 14 25 20.43 | 14 25 20.86 | 14 25 20.10 (0.4) | 14 25 20.87 (0.3) | 14 25 20.73 | 14 25 16.68 | 14 25 20.76 | ||||
| Spectral type | DQ | DQ | DQ | DQ | DQ | DQA: | ||||||
| Effective temperature | [K] | 7117.0 (192) | 7140.0 (120) | 10088.0 (20) | 10090.0 (22) | |||||||
| log(g) | [cgs] | 7.45 | 8.00 (0) | 8.53 (0.4) | 9.35 (0.6) | |||||||
| Mass | [M☉] | 0.3078 | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.8260 | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | -6.2044 (0.1) | -5.87 (0.2) | ||||||||||
| 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] | 5.51 (0.5) | 5.43 | 5.43 (0.6) | 5.51 (0.5) | |||||||
| Distance | [pc] | 181.43 (15) | 184.33 (21) | 184.33 (21) | 139.00 | 181.43 (15) | ||||||
| Composition | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -23.91345956 (0.5) | -23.59548028 (0.9) | -23.913 (0.5) | -21.8 | |||||||
| Proper motion (declination) | [mas/yr] | -49.51209185 (0.4) | -49.19344527 (0.7) | -49.512 (0.4) | -46.2 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.67 (0.04) | 19.61 (0.03) | 19.63 (0.03) | 19.62 | 19.64 (0.03) | |||||||
| g magnitude | 19.25 (0.01) | 19.24 (0.01) | 19.29 (0.02) | 19.29 | 19.31 (0.02) | |||||||
| r magnitude | 19.11 (0.01) | 19.11 (0.01) | 19.17 (0.03) | 19.17 | 19.17 (0.03) | |||||||
| i magnitude | 19.11 (0.01) | 19.11 (0.01) | 19.15 (0.02) | 19.14 | 19.16 (0.02) | |||||||
| z magnitude | 19.16 (0.05) | 19.16 (0.05) | 19.28 (0.06) | 19.28 | 19.27 (0.06) | |||||||
| G magnitude | 19.51 (0.04) | 19.50 | 19.51 (0.005) | |||||||||
| BP magnitude | 19.27 (0.04) | 19.27 | ||||||||||
| RP magnitude | 18.89 (0.05) | 18.80 | ||||||||||
| Pan g magnitude | 19.29 (0.007) | |||||||||||
| Pan r magnitude | 19.17 (0.02) | |||||||||||
| Pan i magnitude | 19.20 (0.009) | |||||||||||
| Pan z magnitude | 19.31 (0.02) | |||||||||||
| Pan y magnitude | 19.24 (0.03) | |||||||||||
| E(B-V) | 0.028 | |||||||||||
* 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.