All names: PM J19476-4200, CD-42 14462, Gaia DR1 6688624794231054976, SBC9 1171, TIC 79880315, LSE 186, 2E 1944.1-4208, HIC 97394, 2RXP J194740.5-415934, ALS 18984, GEN# -0.04214462, Gaia DR3 6688624794231054976, uvby98 -004214462 V, 1SWASP J194740.52-420026.3, SBC7 764, WD 1944-42, AAVSO 1940-42, GSC 07941-00694, Gaia DR2 6688624794231054976, HIP 97394, Gaia EDR3 6688624794231054976, 1RXS J194742.1-415952, CPD-42 8912, WG 35, WEB 17115, WD 1944-421, TYC 7941-694-1, WISEA J194740.59-420026.9, EC 19442-4207, UCAC4 240-175184, PPM 325476, WISE J194740.53-420026.7, V* V3885 Sgr, 2MASS J19474052-4200264, TD1 31186, PLX 4641.01, 2E 4290
| 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.