All names: SDSS J125757.87+545840.9, 2MASS J12575784+5458408, SDSS J125757.88+545841.0, Gaia DR3 1576293099741798912, TIC 371833484, WD 1255+552, [HHD2009] SDSS J1257+5458, SDSS J125757.90+545841.3, Gaia DR2 1576293099741798912, WIRED J125757.87+545840.9, Gaia EDR3 1576293099741798912
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 57 57.85 (0.2) | 12 57 57.87 | 12 57 57.85 (0.3) | 12 57 57.87 | 12 57 57.87 (0.2) | 12 57 57.88 | 12 57 57.24 | 12 57 57.88 | |||
| Declination | 54 58 40.94 (0.3) | 54 58 40.99 | 54 58 40.94 (0.3) | 54 58 40.91 | 54 58 40.88 (0.3) | 54 58 40.99 | 54 58 36.84 | 54 58 40.99 | |||
| Spectral type | DA+M | DA+dM | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 34131.0 (1707) | 6300.0 (2) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 7.47 (0.3) | 8.24 (0.3) | 5.03 (0.04) | |||||||
| Mass | [M☉] | 0.44 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.94 (0.4) | 2.69 (0.5) | 2.94 (0.4) | |||||||
| Distance | [pc] | 339.67 (44) | 371.39 (64) | 932.00 (100) | 339.66 (44) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.098180383 (0.3) | -9.816617632 (0.6) | -9.098 (0.3) | -4.3 | ||||||
| Proper motion (declination) | [mas/yr] | 3.931521286 (0.4) | 5.743420237 (0.6) | 3.932 (0.4) | 0.8 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.69 (0.07) | ||||||||||
| H magnitude | 15.17 (0.08) | ||||||||||
| K magnitude | 14.99 (0.1) | ||||||||||
| u magnitude | 18.77 (0.02) | 18.76 | 18.77 (0.02) | 18.76 (0.04) | 18.76 | 18.75 (0.03) | |||||
| g magnitude | 18.55 (0.008) | 18.57 | 18.54 (0.008) | 18.57 (0.04) | 18.57 | 18.56 (0.03) | |||||
| r magnitude | 17.91 (0.007) | 17.95 | 17.90 (0.007) | 17.95 (0.02) | 17.95 | 17.95 (0.02) | |||||
| i magnitude | 17.32 (0.006) | 17.36 | 17.32 (0.006) | 17.36 (0.02) | 17.37 | 17.36 (0.02) | |||||
| z magnitude | 16.99 (0.01) | 17.02 | 16.98 (0.01) | 17.02 (0.03) | 17.02 | 17.01 (0.03) | |||||
| G magnitude | 17.99 (0.02) | 17.94 | 17.99 (0.004) | ||||||||
| BP magnitude | 18.30 (0.02) | 18.31 | |||||||||
| RP magnitude | 16.93 (0.01) | 16.94 | |||||||||
| Pan g magnitude | 18.52 (0.007) | ||||||||||
| Pan r magnitude | 17.91 (0.005) | ||||||||||
| Pan i magnitude | 17.33 (0.004) | ||||||||||
| Pan z magnitude | 17.04 (0.004) | ||||||||||
| Pan y magnitude | 16.87 (0.01) | ||||||||||
| E(B-V) | 0.019 | ||||||||||
* 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.