All names: Gaia EDR3 1382820903415893888, WISE J155714.75+395920.3, Gaia DR2 1382820903415893888, SDSS J155714.75+395921.8, WISEA J155714.75+395920.6, TIC 29396953, SDSS J155714.78+395920.5, Gaia DR3 1382820903415893888, WD 1555+401, SDSS_J155714.74+395921.8, 2MASS J15571479+3959205
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 57 14.73 (0.08) | 15 57 14.76 | 15 57 14.75 | 15 57 14.79 (0.08) | 15 57 14.74 | 15 57 14.57 | 15 57 14.75 | ||
| Declination | 39 59 20.28 (0.08) | 39 59 21.93 | 39 59 21.80 | 39 59 20.56 (0.08) | 39 59 21.82 | 39 59 19.32 | 39 59 21.82 | ||
| Spectral type | DC+M | dM | DC+M | DC d | DCM | ||||
| Effective temperature | [K] | 11943.0 (512) | 13718.0 (470) | ||||||
| log(g) | [cgs] | 8.83 (0.2) | 9.66 (0.3) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 4.67 (0.09) | 4.67 (0.09) | ||||||
| Distance | [pc] | 214.28 (4) | 629.00 (73) | 214.28 (4) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -45.93313585 (0.09) | -45.933 (0.09) | -55.3 | |||||
| Proper motion (declination) | [mas/yr] | -17.13312906 (0.1) | -17.133 (0.1) | -30.8 | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.87 (0.04) | ||||||||
| H magnitude | 14.29 (0.04) | ||||||||
| K magnitude | 14.00 (0.04) | ||||||||
| u magnitude | 19.63 (0.04) | 19.52 | 22.38 (0.4) | 19.52 (0.04) | 19.52 | 19.51 (0.04) | |||
| g magnitude | 19.58 (0.01) | 19.40 | 19.66 (0.01) | 19.40 (0.05) | 19.40 | 19.38 (0.05) | |||
| r magnitude | 20.13 (0.03) | 19.54 | 18.33 (0.009) | 19.54 (0.2) | 19.54 | 19.54 (0.2) | |||
| i magnitude | 23.31 (0.7) | 19.02 | 16.97 (0.005) | 19.02 (0.4) | 19.02 | 19.01 (0.4) | |||
| z magnitude | 22.83 (1) | 22.18 | 16.17 (0.009) | 22.18 (11) | 22.18 | 22.17 (11) | |||
| G magnitude | 17.82 (0.04) | 17.82 (0.003) | |||||||
| BP magnitude | 18.91 (0.04) | ||||||||
| RP magnitude | 16.51 (0.009) | ||||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.018 | ||||||||
* 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.