All names: SDSS J164131.77+212727.1, GALEX J164131.7+212727, Gaia DR2 4564363729460305280, WD 1639+215, Gaia EDR3 4564363729460305280, TIC 349441429, Gaia DR3 4564363729460305280, 2MASS J16413178+2127271, SDSS J164131.77+212727.2
| 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) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 41 31.75 (0.05) | 16 41 31.77 | 16 41 31.75 (0.06) | 16 41 31.77 | 16 41 31.77 (0.05) | 16 41 31.03 | |||
| Declination | 21 27 27.44 (0.06) | 21 27 27.13 | 21 27 27.43 (0.07) | 21 27 27.22 | 21 27 27.12 (0.06) | 21 27 25.20 | |||
| Spectral type | WD+M | D+M | WD M | ||||||
| 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] | 2.64 (0.08) | 2.85 (0.1) | 2.64 (0.08) | |||||
| Distance | [pc] | 379.06 (12) | 350.30 (12) | 1074.00 (283) | 379.06 (12) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -21.84813308 (0.07) | -21.11708189 (0.1) | -21.848 (0.07) | |||||
| Proper motion (declination) | [mas/yr] | 19.65997692 (0.08) | 20.06068011 (0.1) | 19.66 (0.08) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.11 (0.03) | ||||||||
| H magnitude | 13.40 (0.03) | ||||||||
| K magnitude | 13.14 (0.04) | ||||||||
| u magnitude | 19.13 (0.02) | 20.06 | 20.05 (0.04) | 20.06 | |||||
| g magnitude | 18.21 (0.007) | 18.50 | 18.52 (0.007) | 18.49 | |||||
| r magnitude | 17.15 (0.005) | 17.32 | 17.33 (0.005) | 17.31 | |||||
| i magnitude | 16.18 (0.004) | 16.25 | 16.23 (0.004) | 16.24 | |||||
| z magnitude | 15.54 (0.005) | 15.61 | 15.58 (0.006) | 15.60 | |||||
| G magnitude | 16.81 (0.008) | 16.82 | 16.81 (0.003) | ||||||
| BP magnitude | 18.00 (0.008) | 18.00 | |||||||
| RP magnitude | 15.71 (0.003) | 15.71 | |||||||
| Pan g magnitude | 18.24 (0.008) | ||||||||
| Pan r magnitude | 17.22 (0.009) | ||||||||
| Pan i magnitude | 16.17 (0.003) | ||||||||
| Pan z magnitude | 15.63 (0.003) | ||||||||
| Pan y magnitude | 15.36 (0.004) | ||||||||
| E(B-V) | 0.039 | ||||||||
* 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.