All names: WD 1142+255, SDSS J114523.58+251510.9, SDSS J114523.59+251510.9, WISEA J114523.61+251511.2, Gaia DR2 4005295460104492672, WIRED J114523.58+251510.9, TIC 341522508, SDSS J114523.58+251510.8, Gaia EDR3 4005295460104492672, SDSS J114523.52+251510.8, 2MASS J11452362+2515112, Gaia DR3 4005295460104492672, WISE J114523.61+251511.2
| 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) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 45 23.55 (0.3) | 11 45 23.58 | 11 45 23.55 (0.3) | 11 45 23.58 | 11 45 23.58 | 11 45 22.94 | 11 45 23.59 | ||||
| Declination | 25 15 10.81 (0.3) | 25 15 10.89 | 25 15 10.81 (0.7) | 25 15 10.91 | 25 15 10.89 | 25 15 08.28 | 25 15 10.91 | ||||
| Spectral type | DB+M | DB+M | DA d | DB+M | DB+MS | ||||||
| Effective temperature | [K] | 18394.0 (40) | 18428.0 (263) | ||||||||
| log(g) | [cgs] | 8.21 (0.02) | 8.15 (0.09) | ||||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.38 (0.3) | 1.99 (0.6) | ||||||||
| Distance | [pc] | 419.34 (58) | 502.86 (160) | ||||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -43.45837305 (0.3) | -42.82177839 (0.9) | ||||||||
| Proper motion (declination) | [mas/yr] | -5.129707785 (0.4) | -4.586279784 (2) | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 17.12 (0.2) | ||||||||||
| H magnitude | 15.86 (0.2) | ||||||||||
| K magnitude | 16.04 (0.3) | ||||||||||
| u magnitude | 18.77 (0.02) | 18.79 | 18.77 (0.02) | 18.78 | 18.79 (0.03) | ||||||
| g magnitude | 18.88 (0.009) | 18.89 | 18.88 (0.009) | 18.88 | 18.90 (0.02) | ||||||
| r magnitude | 19.13 (0.01) | 19.18 | 19.13 (0.01) | 19.17 | 19.20 (0.02) | ||||||
| i magnitude | 18.94 (0.01) | 19.05 | 18.94 (0.01) | 19.04 | 19.07 (0.02) | ||||||
| z magnitude | 18.51 (0.03) | 18.59 | 18.51 (0.03) | 18.58 | 18.59 (0.03) | ||||||
| G magnitude | 19.11 (0.05) | 19.15 | |||||||||
| BP magnitude | 19.04 (0.05) | ||||||||||
| RP magnitude | 18.53 (0.03) | ||||||||||
| Pan g magnitude | 18.94 (0.007) | ||||||||||
| Pan r magnitude | 19.16 (0.02) | ||||||||||
| Pan i magnitude | 18.98 (0.009) | ||||||||||
| Pan z magnitude | 18.64 (0.02) | ||||||||||
| Pan y magnitude | 18.37 (0.01) | ||||||||||
| 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.