All names: SBC9 1171, WISEA J194740.59-420026.9, WD 1944-421, HIP 97394, uvby98 -004214462 V, 2MASS J19474052-4200264, Gaia DR3 6688624794231054976, Gaia DR1 6688624794231054976, ALS 18984, 2E 1944.1-4208, 2RXP J194740.5-415934, Gaia EDR3 6688624794231054976, SBC7 764, PLX 4641.01, 1SWASP J194740.52-420026.3, Gaia DR2 6688624794231054976, WEB 17115, WISE J194740.53-420026.7, GSC 07941-00694, AAVSO 1940-42, PM J19476-4200, 1RXS J194742.1-415952, TD1 31186, 2E 4290, CD-42 14462, WD 1944-42, GEN# -0.04214462, UCAC4 240-175184, WG 35, TYC 7941-694-1, LSE 186, TIC 79880315, CPD-42 8912, PPM 325476, HIC 97394, EC 19442-4207, V* V3885 Sgr
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 19 47 40.57 (0.02) | 19 47 40.57 (0.07) | 19 47 40.53 (0.02) | 19 47 39.77 | ||
| Declination | -42 00 27.05 (0.02) | -42 00 27.03 (0.05) | -42 00 26.40 (0.02) | -42 00 33.12 | ||
| Spectral type | sdB | PEC | ||||
| Effective temperature | [K] | |||||
| log(g) | [cgs] | |||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 7.75 (0.03) | 7.54 (0.08) | 7.75 (0.03) | ||
| Distance | [pc] | 128.97 (0.6) | 132.68 (1) | 128.97 (0.6) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 30.10282737 (0.03) | 30.176 (0.1) | 30.103 (0.03) | ||
| Proper motion (declination) | [mas/yr] | -40.83772268 (0.02) | -40.657 (0.09) | -40.838 (0.02) | ||
| Variability | ||||||
| Magnetic | yes | |||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 10.36 (0.07) | |||||
| V magnitude | 10.31 (0.03) | |||||
| R magnitude | 10.52 (0.02) | |||||
| I magnitude | ||||||
| J magnitude | 9.96 (0.03) | |||||
| H magnitude | 9.73 (0.03) | |||||
| K magnitude | 9.62 (0.03) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | 10.38 (0.1) | |||||
| z magnitude | ||||||
| G magnitude | 10.22 (0.02) | 10.25 | 10.22 (0.006) | |||
| BP magnitude | 10.25 (0.02) | 10.28 | ||||
| RP magnitude | 10.13 (0.01) | 10.16 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.009 | |||||
* 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.