All names: SDSS J125439.21+315929.6, SDSS J125439.22+315929.6, WD 1252+322, TIC 139118700, Gaia DR3 1465859109625854208, Gaia DR2 1465859109625854208, Gaia EDR3 1465859109625854208, 2MASS J12543923+3159295, GALEX J125439.2+315930
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 54 39.17 (0.2) | 12 54 39.22 | 12 54 39.17 (0.2) | 12 54 39.22 | 12 54 39.23 (0.2) | 12 54 39.07 | |||
| Declination | 31 59 29.68 (0.2) | 31 59 29.61 | 31 59 29.68 (0.2) | 31 59 29.62 | 31 59 29.56 (0.2) | 31 59 27.24 | |||
| Spectral type | WD+M | M2V | WD M | ||||||
| Effective temperature | [K] | ||||||||
| log(g) | [cgs] | ||||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.66 (0.3) | 1.81 (0.3) | 1.66 (0.3) | |||||
| Distance | [pc] | 601.64 (102) | 551.31 (93) | 656.00 (107) | 601.65 (102) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -45.61037354 (0.3) | -46.28651942 (0.5) | -45.61 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | 7.773042355 (0.3) | 7.926165699 (0.4) | 7.773 (0.3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.49 (0.06) | ||||||||
| H magnitude | 14.85 (0.08) | ||||||||
| K magnitude | 14.73 (0.1) | ||||||||
| u magnitude | 20.16 (0.05) | 20.18 | 20.14 (0.05) | 20.18 | |||||
| g magnitude | 19.30 (0.01) | 19.37 | 19.30 (0.01) | 19.37 | |||||
| r magnitude | 18.27 (0.008) | 18.29 | 18.26 (0.008) | 18.28 | |||||
| i magnitude | 17.27 (0.006) | 17.29 | 17.27 (0.006) | 17.28 | |||||
| z magnitude | 16.72 (0.01) | 16.71 | 16.71 (0.01) | 16.70 | |||||
| G magnitude | 18.01 (0.02) | 17.99 | 18.01 (0.004) | ||||||
| BP magnitude | 18.96 (0.02) | 18.98 | |||||||
| RP magnitude | 16.84 (0.007) | 16.85 | |||||||
| Pan g magnitude | 19.19 (0.005) | ||||||||
| Pan r magnitude | 18.26 (0.004) | ||||||||
| Pan i magnitude | 17.28 (0.004) | ||||||||
| Pan z magnitude | 16.81 (0.005) | ||||||||
| Pan y magnitude | 16.59 (0.004) | ||||||||
| E(B-V) | 0.012 | ||||||||
* 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.