All names: Gaia DR2 1610850406606337024, 2MASS J14395793+5739445, SDSS J143957.92+573944.9, Gaia EDR3 1610850406606337024, WD 1438+578, SDSS J143957.92+573944.6, TIC 158494935, GALEX J143957.9+573945, Gaia DR3 1610850406606337024, [SGR2010] J1439+5739
| 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 | 14 39 57.93 (0.2) | 14 39 57.93 | 14 39 57.93 (0.2) | 14 39 57.93 | 14 39 57.93 (0.2) | 14 39 57.94 | |||
| Declination | 57 39 44.59 (0.2) | 57 39 44.64 | 57 39 44.59 (0.2) | 57 39 44.64 | 57 39 44.60 (0.2) | 57 39 40.32 | |||
| Spectral type | DA+M | DA+M1 | DA1.7+M1 | ||||||
| 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] | 2.13 (0.2) | 2.10 (0.2) | 2.13 (0.2) | |||||
| Distance | [pc] | 469.28 (40) | 475.30 (49) | 469.29 (40) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 0.077357865 (0.2) | 0.683315829 (0.3) | 0.077 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -0.480165572 (0.2) | -0.292097505 (0.4) | -0.48 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | yes | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.70 (0.03) | ||||||||
| H magnitude | 14.10 (0.04) | ||||||||
| K magnitude | 13.89 (0.04) | ||||||||
| u magnitude | 19.62 (0.03) | 19.62 | 19.62 (0.04) | 19.62 | |||||
| g magnitude | 18.25 (0.006) | 18.24 | 18.25 (0.007) | 18.25 | |||||
| r magnitude | 17.16 (0.005) | 17.16 | 17.16 (0.005) | 17.16 | |||||
| i magnitude | 16.41 (0.004) | 16.41 | 16.41 (0.004) | 16.41 | |||||
| z magnitude | 15.97 (0.007) | 15.96 | 15.97 (0.007) | 15.97 | |||||
| G magnitude | 17.00 (0.01) | 16.99 | 17.00 (0.003) | ||||||
| BP magnitude | 17.86 (0.01) | 17.82 | |||||||
| RP magnitude | 16.00 (0.004) | 16.02 | |||||||
| Pan g magnitude | 18.13 (0.005) | ||||||||
| Pan r magnitude | 17.17 (0.003) | ||||||||
| Pan i magnitude | 16.41 (0.002) | ||||||||
| Pan z magnitude | 16.05 (0.003) | ||||||||
| Pan y magnitude | 15.87 (0.005) | ||||||||
| E(B-V) | 0.020 | ||||||||
* 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.