All names: ** FAB 17A, 21189+5412, WD 2117+539, TIC 314771701, Gaia DR2 2176116580055936512, 1SWASP J211856.30+541241.4, PM J21189+5412, uvby98 980231040, Lan 51, WDS J21189+5413A, GJ 1261, G 231-40, J2118+5412, SDSS J211856.20+541242.4, CNS5 5254, G231-40, WDJ211856.26+541241.24, NLTT 51043, USNO-B1.0 1442-00355335, HIP 105230, GSC 03953-00480, EGGR 378, Lan 122, 2MASS J21185627+5412413, HIC 105230, SDSS J211856.20+541242.5, Gaia DR3 2176116580055936512, Gaia DR1 2176116580055936512, ASCC 278083, LSPM J2118+5412, Gaia EDR3 2176116580055936512, G231-040, KPD 2117+5400, TYC 3953-480-1, [TFW97] J211856.40+541239.84, WD 2117+53, V* V2151 Cyg
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Kilic et al. 2020 | McCleery et al. 2020 | Gaia DR2 | Bedard et al. 2017 | Subasavage et al. 2017 | Tremblay et al. 2017 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Gianninas et al. 2011 | Holberg et al. 2008 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 18 56.11 (0.02) | 21 18 56.11 (0.03) | 21 18 56.11 (0.03) | 21 18 56.27 | 21 18 56.16 | 21 18 56.11 | 21 18 56.26 (0.02) | 21 18 56.11 | 21 18 55.87 | |||||||||||||
| Declination | 54 12 44.34 (0.02) | 54 12 44.24 (0.04) | 54 12 44.24 (0.04) | 54 12 04.05 | 54 12 39.60 | 54 12 44.34 | 54 12 41.24 (0.02) | 54 12 44.24 | 54 12 36.36 | |||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA3.6 | DA | DA | DA | DA | DA3.4 | DA3.5 | ||||||
| Effective temperature | [K] | 15136.0 (104) | 14785.0 (227) | 16533.0 (141) | 14938.1 (45) | 14648.0 (237) | 15250.0 (660) | 14680.0 (240) | 14684.0 (239) | 14590.0 (238) | 13990.0 | 14684.0 (239) | 14680.0 (239) | 15134.0 (88) | ||||||||
| log(g) | [cgs] | 7.98 (0.005) | 7.90 (0.02) | 8.16 (0.006) | 7.92 (0.005) | 7.91 (0.05) | 7.94 (0.03) | 7.91 (0.05) | 7.91 (0.05) | 7.92 (0.05) | 7.91 (0.05) | 7.91 (0.05) | 7.93 (0.005) | |||||||||
| Mass | [M☉] | 0.6 (0.004) | 0.555 (0.01) | 0.714 (0.005) | 0.56 (0.06) | 0.58 (0.03) | 0.57 (0.02) | 0.57 (0.03) | 0.56 (0.03) | 0.56 (0.03) | 0.574 (0.004) | |||||||||||
| log(Luminosity) | [L☉] | -2.05 (0.08) | -2.12 | -2.10 | ||||||||||||||||||
| Cooling age | [Gyr] | 0.1700 (0.03) | 0.1900 | 0.1800 | ||||||||||||||||||
| log(H/He) | ||||||||||||||||||||||
| log(C/He) | ||||||||||||||||||||||
| log(Ca/He) | ||||||||||||||||||||||
| log(Ca/H) | ||||||||||||||||||||||
| log(C/H) | ||||||||||||||||||||||
| log(N/H) | ||||||||||||||||||||||
| log(O/H) | ||||||||||||||||||||||
| log(Na/H) | ||||||||||||||||||||||
| log(Mg/H) | ||||||||||||||||||||||
| log(Al/H) | ||||||||||||||||||||||
| log(Si/H) | ||||||||||||||||||||||
| log(P/H) | ||||||||||||||||||||||
| log(S/H) | ||||||||||||||||||||||
| log(Sc/H) | ||||||||||||||||||||||
| log(Ti/H) | ||||||||||||||||||||||
| log(Cr/H) | ||||||||||||||||||||||
| log(Mn/H) | ||||||||||||||||||||||
| log(Fe/H) | ||||||||||||||||||||||
| log(Ni/H) | ||||||||||||||||||||||
| Parallax | [mas] | 57.76 (0.02) | 57.76 (0.02) | 57.87 (0.04) | 57.87 (0.04) | 57.56 (0.5) | 57.76 (0.8) | 50.70 (7) | 50.70 (7) | 50.70 (7) | 50.70 (7) | 57.76 | 57.76 (0.02) | 57.87 (0.04) | 50.90 (6) | |||||||
| Distance | [pc] | 17.31 (0.006) | 17.31 (0.006) | 17.28 (0.01) | 17.28 (0.01) | 17.30 (0.3) | 17.37 (0.2) | 17.31 (0.2) | 19.72 (3) | 19.70 (3) | 19.72 | 19.70 (0.7) | 17.00 | 17.88 | 17.31 | 17.31 (0.006) | 17.28 (0.01) | 19.65 (2) | ||||
| Composition | H | H | H | H | H | H | H | H | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -85.45007863 (0.03) | -85.50698929 (0.07) | -85.45 (0.03) | -85.50698929 | |||||||||||||||||
| Proper motion (declination) | [mas/yr] | 193.192618 (0.03) | 193.3303401 (0.07) | 193.193 (0.03) | 193.3303401 | |||||||||||||||||
| Variability | NOV | |||||||||||||||||||||
| Magnetic | ||||||||||||||||||||||
| Bd | [MG] | |||||||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||||||
| Binarity | ||||||||||||||||||||||
| B magnitude | 12.41 | |||||||||||||||||||||
| V magnitude | 12.35 | 12.33 (0.01) | 12.35 | 12.33 | ||||||||||||||||||
| R magnitude | 12.43 | 12.90 | ||||||||||||||||||||
| I magnitude | 12.48 | |||||||||||||||||||||
| J magnitude | 12.68 (0.02) | 12.68 (0.02) | ||||||||||||||||||||
| H magnitude | 12.79 (0.02) | 12.79 (0.02) | ||||||||||||||||||||
| K magnitude | 12.85 (0.04) | 12.85 (0.04) | ||||||||||||||||||||
| u magnitude | 13.38 (0.004) | 13.38 (0.004) | ||||||||||||||||||||
| g magnitude | 15.71 (0.01) | 15.71 (0.01) | ||||||||||||||||||||
| r magnitude | 14.92 (0.01) | 14.92 (0.01) | ||||||||||||||||||||
| i magnitude | 15.40 (0.01) | 15.40 (0.01) | ||||||||||||||||||||
| z magnitude | 13.33 (0.005) | 13.33 (0.005) | ||||||||||||||||||||
| G magnitude | 12.39 (0.0008) | 12.41 | 12.41 | 12.41 (0.001) | 12.39 | 12.39 (0.003) | 12.41 | |||||||||||||||
| BP magnitude | 12.36 (0.0008) | 12.35 | 12.35 | |||||||||||||||||||
| RP magnitude | 12.50 (0.0004) | 12.50 | 12.50 | |||||||||||||||||||
| Pan g magnitude | 13.06 (0.2) | |||||||||||||||||||||
| Pan r magnitude | 12.69 (0.001) | |||||||||||||||||||||
| Pan i magnitude | 13.26 (0.02) | |||||||||||||||||||||
| Pan z magnitude | 13.10 (0.007) | |||||||||||||||||||||
| Pan y magnitude | 13.21 (0.001) | |||||||||||||||||||||
| E(B-V) | 0.000 | |||||||||||||||||||||
* 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.