All names: EQ J1916+3938, Gaia DR3 2101031858707484288, GSC2.3 N2JW021726, Gaia DR2 2101031858707484288, Gaia EDR3 2101031858707484288, SDSS J191643.83+393849.7, USNO-B1.0 1296-00334955, KIS J191643.83+393850.0, KIC 4552982
| Parameter | Unit | Gaia EDR3 | Stilism | Bell et al. 2015 | Hermes et al. 2011 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|---|
| Right ascension | 19 16 43.84 (0.06) | 19 16 43.84 | 19 16 43.82 (0.06) | ||||
| Declination | 39 38 50.12 (0.07) | 39 38 50.12 | 39 38 49.36 (0.07) | ||||
| Spectral type | DA | DA | |||||
| Effective temperature | [K] | 11130.0 | 11130.0 | 10621.0 (196) | |||
| log(g) | [cgs] | 8.34 | 8.34 | 8.09 (0.03) | |||
| Mass | [M☉] | 0.655 (0.03) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 7.57 (0.08) | 7.57 | 7.57 (0.08) | |||
| Distance | [pc] | 132.15 (1) | 132.15 | 132.15 (1) | |||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 17.527 (0.08) | 17.527 (0.08) | ||||
| Proper motion (declination) | [mas/yr] | 47.607 (0.09) | 47.607 (0.09) | ||||
| Variability | VAR | VAR | |||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 17.60 (0.4) | ||||||
| V magnitude | 17.70 | 17.70 | 17.72 (0.4) | ||||
| R magnitude | 17.93 (0.4) | ||||||
| I magnitude | 17.72 (0.5) | ||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | |||||||
| g magnitude | 17.75 (0.005) | ||||||
| r magnitude | 17.68 (0.007) | ||||||
| i magnitude | 17.57 (0.02) | ||||||
| z magnitude | |||||||
| G magnitude | 17.70 (0.003) | 17.70 | 17.70 (0.003) | ||||
| BP magnitude | 17.75 (0.01) | ||||||
| RP magnitude | 17.68 (0.01) | ||||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.019 | ||||||
| Period #1 | [s] | 360.5 | 823.9 | ||||
| Amplitude #1 | [mma] | 0.16 | 3.8 | ||||
| Period #2 | [s] | 361.6 | 834.1 | ||||
| Amplitude #2 | [mma] | 0.16 | 3.2 | ||||
| Period #3 | [s] | 362.6 | 934.5 | ||||
| Amplitude #3 | [mma] | 0.94 | 3.6 | ||||
| Period #4 | [s] | 788.2 | 968.9 | ||||
| Amplitude #4 | [mma] | 0.05 | 4.4 | ||||
| Period #5 | [s] | 828.3 | 1089.0 | ||||
| Amplitude #5 | [mma] | 0.14 | 2.5 | ||||
| Period #6 | [s] | 866.1 | 1169.9 | ||||
| Amplitude #6 | [mma] | 0.16 | 2.3 | ||||
| Period #7 | [s] | 907.6 | 1436.7 | ||||
| Amplitude #7 | [mma] | 0.14 | 2.4 | ||||
| Period #8 | [s] | 950.5 | |||||
| Amplitude #8 | [mma] | 0.16 | |||||
| Period #9 | [s] | 982.2 | |||||
| Amplitude #9 | [mma] | 0.09 | |||||
| Period #10 | [s] | 1014.2 | |||||
| Amplitude #10 | [mma] | 0.08 | |||||
| Period #11 | [s] | 1053.7 | |||||
| Amplitude #11 | [mma] | 0.06 | |||||
| Period #12 | [s] | 1100.9 | |||||
| Amplitude #12 | [mma] | 0.05 | |||||
| Period #13 | [s] | 1158.2 | |||||
| Amplitude #13 | [mma] | 0.07 | |||||
| Period #14 | [s] | 1200.2 | |||||
| Amplitude #14 | [mma] | 0.04 | |||||
| Period #15 | [s] | 1244.7 | |||||
| Amplitude #15 | [mma] | 0.05 | |||||
| Period #16 | [s] | 1289.2 | |||||
| Amplitude #16 | [mma] | 0.11 | |||||
| Period #17 | [s] | 1301.7 | |||||
| Amplitude #17 | [mma] | 0.08 | |||||
| Period #18 | [s] | 1333.2 | |||||
| Amplitude #18 | [mma] | 0.07 | |||||
| Period #19 | [s] | 1363.0 | |||||
| Amplitude #19 | [mma] | 0.07 | |||||
| Period #20 | [s] | 1498.3 | |||||
| Amplitude #20 | [mma] | 0.08 | |||||
* 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.