All names: SDSS J152052.18+342856.0, WD 1518+346, WISE J152052.19+342856.1, SDSS J152052.17+342856.0, Gaia DR2 1278810161444880768, Gaia EDR3 1278810161444880768, TIC 445872968, 2MASS J15205218+3428559, WISEA J152052.18+342856.0, Gaia DR3 1278810161444880768
| 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 | 15 20 52.19 (0.07) | 15 20 52.18 | 15 20 52.19 (0.09) | 15 20 52.18 | 15 20 52.17 (0.07) | 15 20 51.53 | |||
| Declination | 34 28 56.14 (0.09) | 34 28 56.04 | 34 28 56.14 (0.1) | 34 28 55.99 | 34 28 55.97 (0.09) | 34 28 51.60 | |||
| Spectral type | WD+M | M4V | 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] | 3.75 (0.1) | 3.45 (0.2) | 3.75 (0.1) | |||||
| Distance | [pc] | 266.32 (8) | 289.93 (13) | 266.32 (8) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 17.04544526 (0.09) | 17.83292591 (0.2) | 17.045 (0.09) | |||||
| Proper motion (declination) | [mas/yr] | 10.66184589 (0.1) | 11.18344351 (0.3) | 10.662 (0.1) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.55 (0.03) | ||||||||
| H magnitude | 13.93 (0.04) | ||||||||
| K magnitude | 13.69 (0.04) | ||||||||
| u magnitude | 20.46 (0.06) | 20.51 | 20.46 (0.06) | 20.51 | |||||
| g magnitude | 19.15 (0.01) | 19.23 | 19.15 (0.01) | 19.23 | |||||
| r magnitude | 18.03 (0.007) | 18.08 | 18.03 (0.007) | 18.08 | |||||
| i magnitude | 16.70 (0.005) | 16.72 | 16.70 (0.005) | 16.71 | |||||
| z magnitude | 15.90 (0.006) | 15.94 | 15.90 (0.006) | 15.93 | |||||
| G magnitude | 17.44 (0.02) | 17.46 | 17.44 (0.003) | ||||||
| BP magnitude | 18.75 (0.02) | 18.75 | |||||||
| RP magnitude | 16.20 (0.003) | 16.21 | |||||||
| Pan g magnitude | 19.11 (0.01) | ||||||||
| Pan r magnitude | 18.06 (0.01) | ||||||||
| Pan i magnitude | 16.72 (0.003) | ||||||||
| Pan z magnitude | 16.07 (0.005) | ||||||||
| Pan y magnitude | 15.74 (0.003) | ||||||||
| E(B-V) | 0.024 | ||||||||
* 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.