All names: SDSS J114716.07+293930.2, SDSS J114716.08+293930.3, 2MASS J11471607+2939301, SDSS J114716.07+293930.3, US 2947, GALEX J114716.1+293930, [HHD2009] SDSS J1147+2939, Gaia DR2 4020741021494570624, Gaia DR3 4020741021494570624, Gaia EDR3 4020741021494570624, TIC 328817573, WD 1144+299
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 47 16.05 (0.2) | 11 47 16.08 | 11 47 16.05 (0.2) | 11 47 16.07 | 11 47 16.05 | 11 47 16.08 (0.2) | 11 47 16.10 | 11 47 16.08 | ||||
| Declination | 29 39 30.21 (0.1) | 29 39 30.29 | 29 39 30.21 (0.2) | 29 39 30.31 | 29 39 30.21 | 29 39 30.35 (0.1) | 29 39 25.92 | 29 39 30.31 | ||||
| Spectral type | DA+M | DA | DA+M | DA3.0 | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 16149.0 (338) | 8934.0 (293) | 15517.0 (177) | ||||||||
| log(g) | [cgs] | 8.08 (0.07) | 6.99 (0.08) | 7.92 (0.04) | ||||||||
| Mass | [M☉] | 0.66 (0.05) | 0.21 (0.03) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 3.66 (0.2) | 3.37 (0.3) | 3.66 | 3.66 (0.2) | |||||||
| Distance | [pc] | 273.54 (14) | 296.50 (25) | 273.54 | 273.55 (14) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -22.2382403 (0.2) | -22.20802699 (0.4) | -22.238 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | -8.529096589 (0.2) | -8.122170233 (0.4) | -8.529 (0.2) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | yes | WDMS | WDMS | ||||||||
| B magnitude | 18.60 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.81 (0.1) | |||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.55 (0.02) | 18.51 | 18.55 (0.02) | 18.51 | 18.55 (0.02) | |||||||
| g magnitude | 18.27 (0.006) | 18.26 | 18.27 (0.006) | 18.26 | 18.28 (0.02) | |||||||
| r magnitude | 18.55 (0.009) | 18.52 | 18.55 (0.009) | 18.52 | 18.54 (0.02) | |||||||
| i magnitude | 18.62 (0.01) | 18.60 | 18.62 (0.01) | 18.60 | 18.62 (0.02) | |||||||
| z magnitude | 18.38 (0.03) | 18.35 | 18.38 (0.03) | 18.35 | 18.37 (0.03) | |||||||
| G magnitude | 18.36 (0.03) | 18.38 | 18.36 | 18.36 (0.004) | ||||||||
| BP magnitude | 18.38 (0.03) | 18.31 | ||||||||||
| RP magnitude | 18.22 (0.04) | 18.13 | ||||||||||
| Pan g magnitude | 18.31 (0.007) | |||||||||||
| Pan r magnitude | 18.55 (0.006) | |||||||||||
| Pan i magnitude | 18.63 (0.007) | |||||||||||
| Pan z magnitude | 18.47 (0.006) | |||||||||||
| Pan y magnitude | 18.28 (0.02) | |||||||||||
| 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.