All names: Gaia DR2 1809844934461976832, WD 2003+17, WDJ200736.50+174214.73, 2E 2005.3+1733, GCRV 70442, PLX 4778, EM* CDS 1133, NOVA Sge 1913, SBC9 1204, 2005+175, 2E 4322, 2MASS J20073649+1742147, 1RXS J200736.4+174217, NOVA Sge 1978, 1ES 2005+17.5, EGGR 136, WDJ200736.5+174214.73, Gaia EDR3 1809844934461976832, AAVSO 2003+17, V*WZ Sge, Lan 50, V* WZ Sge, PLX 4778.00, WEB 17643, FB 173, 3XMM J200736.5+174213, UCAC4 539-122231, SV* HV 3518, Gaia DR3 1809844934461976832, TIC 86408822, NOVA Sge 1946, UBV 17296, uvby98 620020136, CSI+17-20053 2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Leggett et al. 2018 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 07 36.58 (0.02) | 20 07 36.58 | 20 07 36.58 | 20 07 36.50 (0.02) | 20 07 36.58 | ||||||
| Declination | 17 42 14.34 (0.02) | 17 42 14.36 | 17 42 14.34 | 17 42 14.73 (0.02) | 17 42 14.36 | ||||||
| Spectral type | DC: | D | |||||||||
| Effective temperature | [K] | 9557.0 | 9680.0 | 9419.0 (86) | |||||||
| log(g) | [cgs] | 7.68 | 7.64 | 7.54 (0.02) | |||||||
| Mass | [M☉] | 0.432 | 0.391 | 0.35 (0.009) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.4686 | 0.4423 | ||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 22.10 (0.03) | 22.13 (0.2) | 22.16 (0.04) | 22.10 | 22.10 (0.03) | 22.16 (0.04) | ||||
| Distance | [pc] | 45.24 (0.06) | 45.19 (0.4) | 45.13 (0.08) | 45.24 | 45.24 (0.06) | 45.13 (0.08) | ||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 71.50556974 (0.03) | 71.63532012 (0.06) | 71.506 (0.03) | 71.63532012 | ||||||
| Proper motion (declination) | [mas/yr] | -24.3289588 (0.02) | -24.34813333 (0.04) | -24.329 (0.02) | -24.34813333 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.30 | ||||||||||
| V magnitude | 15.20 | ||||||||||
| R magnitude | 10.82 (0.9) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 14.86 (0.04) | ||||||||||
| H magnitude | 14.56 (0.05) | ||||||||||
| K magnitude | 14.00 (0.06) | ||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 15.18 (0.009) | 15.21 | 15.18 | 15.18 (0.004) | 15.21 | ||||||
| BP magnitude | 15.23 (0.009) | 15.21 | 15.21 | ||||||||
| RP magnitude | 15.06 (0.01) | 15.06 | 15.06 | ||||||||
| Pan g magnitude | 15.15 (0.02) | ||||||||||
| Pan r magnitude | 15.22 (0.01) | ||||||||||
| Pan i magnitude | 15.42 (0.03) | ||||||||||
| Pan z magnitude | 15.59 (0.02) | ||||||||||
| Pan y magnitude | 15.50 (0.01) | ||||||||||
| E(B-V) | 0.003 | ||||||||||
* 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.