All names: EGGR 575, SDSS J163840.41+155416.4, GEN# +6.10060202, Gaia DR2 4462895505049732608, GALEX J163840.4+155416, WD 1636+160, TIC 341307177, Gaia EDR3 4462895505049732608, 2MASS J16384039+1554169, WDJ163840.40+155416.67, GD 202, J1638+1554, SDSS J163840.41+155416.3, WD 1636+16, Gaia DR3 4462895505049732608
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 38 40.43 (0.02) | 16 38 40.43 (0.03) | 16 38 40.43 | 16 38 40.40 (0.02) | 16 38 40.43 | 16 38 40.90 | ||||||
| Declination | 15 54 15.39 (0.02) | 15 54 15.43 (0.03) | 15 54 15.39 | 15 54 16.66 (0.02) | 15 54 15.43 | 15 54 13.32 | ||||||
| Spectral type | DA | DA | DA | DA | DA3.8 | DA4 | ||||||
| Effective temperature | [K] | 12979.0 (114) | 12979.0 (114) | 13360.0 (277) | 13449.0 (109) | |||||||
| log(g) | [cgs] | 8.04 (0.005) | 8.04 (0.006) | 7.97 (0.06) | 8.07 (0.007) | |||||||
| Mass | [M☉] | 0.63 (0.005) | 0.63 (0.005) | 0.59 (0.03) | 0.651 (0.006) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 15.45 (0.04) | 15.45 (0.05) | 15.45 | 15.45 (0.04) | 15.45 (0.05) | ||||||
| Distance | [pc] | 64.72 (0.2) | 64.72 (0.2) | 68.00 | 64.72 | 64.72 (0.2) | 64.72 (0.2) | |||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 27.75079483 (0.03) | 27.76921809 (0.06) | 27.751 (0.03) | 27.76921809 | |||||||
| Proper motion (declination) | [mas/yr] | -79.45462055 (0.03) | -79.51910349 (0.06) | -79.455 (0.03) | -79.51910349 | |||||||
| Variability | NOV | |||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.74 | |||||||||||
| V magnitude | 15.60 | |||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.78 (0.08) | |||||||||||
| H magnitude | 15.95 (0.2) | |||||||||||
| K magnitude | ||||||||||||
| u magnitude | 15.92 (0.005) | 15.92 (0.005) | ||||||||||
| g magnitude | 15.54 (0.003) | 15.54 (0.003) | ||||||||||
| r magnitude | 15.81 (0.004) | 15.81 (0.004) | ||||||||||
| i magnitude | 16.03 (0.004) | 16.03 (0.004) | ||||||||||
| z magnitude | 16.29 (0.007) | 16.29 (0.007) | ||||||||||
| G magnitude | 15.68 (0.002) | 15.70 | 15.68 | 15.68 (0.003) | 15.70 | |||||||
| BP magnitude | 15.67 (0.002) | 15.66 | 15.66 | |||||||||
| RP magnitude | 15.73 (0.003) | 15.73 | 15.73 | |||||||||
| Pan g magnitude | 15.58 (0.004) | |||||||||||
| Pan r magnitude | 15.80 (0.003) | |||||||||||
| Pan i magnitude | 16.05 (0.002) | |||||||||||
| Pan z magnitude | 16.26 (0.003) | |||||||||||
| Pan y magnitude | 16.41 (0.004) | |||||||||||
| E(B-V) | 0.004 | |||||||||||
* 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.