All names: SDSS J172807.29+264620.1, WD 1726+268, LP 332-25, LSPM J1728+2646, SDSS J172807.28+264619.2, Gaia EDR3 4571077514961874944, SDSS J172807.27+264619.2, WIRED J172807.27+264619.2, USNO-B1.0 1167-00303592, GALEX J172807.4+264619, NLTT 44855
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 28 07.24 (4) | 17 28 07.28 | 17 28 07.28 (93) | 17 28 07.39 | 17 28 07.28 | |||
| Declination | 26 46 16.36 (6) | 26 46 19.24 | 26 46 20.60 (90) | 26 46 18.84 | 26 46 19.22 | |||
| Spectral type | DA | DA9.0 | DAH: | |||||
| Effective temperature | [K] | 6300.0 (2) | ||||||
| log(g) | [cgs] | 9.38 (0.07) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 17.20 (2) | ||||||
| Distance | [pc] | 58.14 (6) | ||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -46.0 (2) | ||||||
| Proper motion (declination) | [mas/yr] | -250.0 (2) | ||||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 18.40 | |||||||
| V magnitude | ||||||||
| R magnitude | 17.80 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.18 (0.02) | 19.22 (0.02) | 18.99 | 19.19 (0.03) | ||||
| g magnitude | 18.13 (0.006) | 18.13 (0.006) | 18.02 | 18.18 (0.01) | ||||
| r magnitude | 17.67 (0.006) | 17.67 (0.006) | 17.60 | 17.71 (0.01) | ||||
| i magnitude | 17.50 (0.006) | 17.50 (0.006) | 17.44 | 17.53 (0.01) | ||||
| z magnitude | 17.44 (0.01) | 17.44 (0.01) | 17.40 | 17.45 (0.02) | ||||
| G magnitude | 18.09 (0.01) | |||||||
| BP magnitude | 18.07 (0.01) | |||||||
| RP magnitude | 17.19 (0.007) | |||||||
| Pan g magnitude | 18.08 (0.006) | |||||||
| Pan r magnitude | 17.71 (0.004) | |||||||
| Pan i magnitude | 17.54 (0.003) | |||||||
| Pan z magnitude | 17.51 (0.005) | |||||||
| Pan y magnitude | 17.48 (0.009) | |||||||
| E(B-V) | 0.005 | |||||||
* 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.