All names: 2MASS J16490635+3858336, GALEX J164906.3+385833, SDSS J164906.34+385833.4, Gaia EDR3 1352470529902924032, Gaia DR3 1352470529902924032, WD 1647+390, SDSS J164906.33+385833.4, [HHD2009] SDSS J1649+3858, TIC 57332480, Gaia DR2 1352470529902924032
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 49 06.35 (0.2) | 16 49 06.34 | 16 49 06.35 (0.2) | 16 49 06.33 | 16 49 06.34 (0.2) | 16 49 06.29 | 16 49 06.34 | |||
| Declination | 38 58 33.39 (0.2) | 38 58 33.49 | 38 58 33.39 (0.2) | 38 58 33.38 | 38 58 33.44 (0.2) | 38 58 27.48 | 38 58 33.41 | |||
| Spectral type | DA+M | DA+M | DA1.6 M | DA+M | ||||||
| Effective temperature | [K] | 30419.0 (1673) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 7.37 (0.4) | 10.00 (0.004) | |||||||
| Mass | [M☉] | 0.39 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.49 (0.2) | 0.68 (0.2) | 0.49 (0.2) | ||||||
| Distance | [pc] | 2035.86 (775) | 1477.09 (429) | 608.00 (280) | 2035.83 (775) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 5.089396278 (0.2) | 5.130956255 (0.3) | 5.089 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -3.381008129 (0.2) | -3.780026907 (0.4) | -3.381 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.04 (0.07) | |||||||||
| H magnitude | 15.42 (0.1) | |||||||||
| K magnitude | 15.03 (0.1) | |||||||||
| u magnitude | 19.70 (0.03) | 19.69 | 19.73 (0.03) | 19.69 | 19.66 (0.03) | |||||
| g magnitude | 19.24 (0.01) | 19.27 | 19.29 (0.01) | 19.27 | 19.26 (0.02) | |||||
| r magnitude | 18.37 (0.008) | 18.36 | 18.37 (0.008) | 18.35 | 18.36 (0.02) | |||||
| i magnitude | 17.72 (0.007) | 17.71 | 17.72 (0.007) | 17.70 | 17.70 (0.02) | |||||
| z magnitude | 17.33 (0.01) | 17.33 | 17.34 (0.01) | 17.32 | 17.32 (0.02) | |||||
| G magnitude | 18.37 (0.03) | 18.33 | 18.37 (0.005) | |||||||
| BP magnitude | 18.98 (0.03) | 18.91 | ||||||||
| RP magnitude | 17.36 (0.007) | 17.35 | ||||||||
| Pan g magnitude | 19.14 (0.007) | |||||||||
| Pan r magnitude | 18.39 (0.005) | |||||||||
| Pan i magnitude | 17.74 (0.003) | |||||||||
| Pan z magnitude | 17.43 (0.006) | |||||||||
| Pan y magnitude | 17.26 (0.005) | |||||||||
| E(B-V) | 0.021 | |||||||||
* 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.