All names: LP 814-1, 2MASS J19554698-2031030, GCRV 21706, TIC 241985097, Gaia EDR3 6865430941202657408, L 709-20, NSV 12560, NLTT 48430, Gaia DR3 6865430941202657408, WDJ195546.99-203103.25, [DWS97] Sgr 3, WD 1952-20, WD 1952-206, USNO-B1.0 0694-00801346, LTT 7873, WD1952-206, GALEX J195546.9-203105, LAWD 78, UCAC4 348-185498, EGGR 260, Gaia DR2 6865430941202657408
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 55 47.10 (0.03) | 19 55 47.10 (0.04) | 19 55 47.00 | 19 55 47.10 | 19 55 46.99 (0.03) | 19 55 47.10 | 19 55 49.78 | |||||
| Declination | -20 31 09.44 (0.02) | -20 31 09.24 (0.03) | -20 31 03.00 | -20 31 09.44 | -20 31 03.25 (0.02) | -20 31 09.24 | -20 29 00.24 | |||||
| Spectral type | DA | DA | DA | DA3.5 | DA6 | |||||||
| Effective temperature | [K] | 14370.0 (263) | 13814.0 (40) | 13749.0 (95) | 14700.0 (126) | |||||||
| log(g) | [cgs] | 7.98 (0.05) | 7.82 (0.005) | 7.76 (0.01) | 7.97 (0.008) | |||||||
| Mass | [M☉] | 0.6 (0.03) | 0.48 | 0.598 (0.006) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| 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] | 17.43 (0.03) | 17.57 (0.05) | 17.43 | 17.43 (0.03) | 17.57 (0.05) | ||||||
| Distance | [pc] | 57.37 (0.1) | 56.92 (0.2) | 54.00 | 57.37 | 57.37 (0.1) | 56.92 (0.2) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 95.55668653 (0.03) | 95.46995329 (0.09) | 95.557 (0.03) | 95.46995329 | |||||||
| Proper motion (declination) | [mas/yr] | -386.6215226 (0.02) | -386.6731786 (0.05) | -386.622 (0.02) | -386.6731786 | |||||||
| Variability | NOV | |||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.09 (0.03) | |||||||||||
| V magnitude | 15.00 | 15.00 | 15.06 (0.01) | |||||||||
| R magnitude | 15.27 (0.1) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.33 (0.06) | |||||||||||
| H magnitude | 15.40 (0.1) | |||||||||||
| K magnitude | 15.26 (0.2) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | 14.98 (0.01) | |||||||||||
| r magnitude | 15.24 (0.01) | |||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.11 (0.003) | 15.13 | 15.11 | 15.11 (0.003) | 15.13 | |||||||
| BP magnitude | 15.08 (0.003) | 15.06 | 15.06 | |||||||||
| RP magnitude | 15.21 (0.002) | 15.20 | 15.20 | |||||||||
| Pan g magnitude | 15.02 (0.003) | |||||||||||
| Pan r magnitude | 15.27 (0.003) | |||||||||||
| Pan i magnitude | 15.53 (0.001) | |||||||||||
| Pan z magnitude | 15.75 (0.003) | |||||||||||
| Pan y magnitude | 15.91 (0.009) | |||||||||||
| E(B-V) | 0.002 | |||||||||||
* 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.