All names: Gaia DR3 656351477631418496, 2MASSI J0818116+173224, [SGR2010] J0818+1732, Gaia EDR3 656351477631418496, Gaia DR2 656351477631418496, GALEX J081811.7+173225, SDSS J081811.76+173224.7, EPIC 211815847, SDSS J081811.71+173224.5, SDSS J081811.70+173224.5, WD 0815+176, TIC 186851025, 2MASS J08181170+1732245
| 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 | 08 18 11.69 (0.2) | 08 18 11.71 | 08 18 11.69 (0.2) | 08 18 11.70 | 08 18 11.70 (0.2) | 08 18 11.28 | 08 18 11.71 | |||
| Declination | 17 32 24.39 (0.1) | 17 32 24.50 | 17 32 24.40 (0.1) | 17 32 24.50 | 17 32 24.53 (0.1) | 17 32 18.96 | 17 32 24.54 | |||
| Spectral type | DA+M | DA+dMe | DA dM | DA+M | ||||||
| Effective temperature | [K] | 15071.0 (2056) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 8.69 (0.3) | 10.00 (0.003) | |||||||
| Mass | [M☉] | 1.04 (0.2) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.54 (0.3) | -0.84 (0.3) | 0.54 (0.3) | ||||||
| Distance | [pc] | 1841.44 (853) | 469.00 (34) | 1841.28 (853) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.001918092 (0.2) | -10.15441158 (0.5) | -9.002 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -8.509804426 (0.2) | -9.63948303 (0.3) | -8.51 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.05 (0.04) | |||||||||
| H magnitude | 14.42 (0.04) | |||||||||
| K magnitude | 14.26 (0.06) | |||||||||
| u magnitude | 20.31 (0.04) | 20.36 | 20.31 (0.05) | 20.36 | 20.34 (0.05) | |||||
| g magnitude | 19.32 (0.01) | 19.43 | 19.33 (0.01) | 19.43 | 19.42 (0.02) | |||||
| r magnitude | 18.43 (0.008) | 18.50 | 18.42 (0.008) | 18.50 | 18.49 (0.01) | |||||
| i magnitude | 17.23 (0.006) | 17.25 | 17.23 (0.006) | 17.25 | 17.26 (0.01) | |||||
| z magnitude | 16.49 (0.009) | 16.52 | 16.48 (0.009) | 16.52 | 16.50 (0.02) | |||||
| G magnitude | 18.00 (0.04) | 18.00 | 17.99 (0.004) | |||||||
| BP magnitude | 19.06 (0.04) | 18.92 | ||||||||
| RP magnitude | 16.77 (0.009) | 16.76 | ||||||||
| Pan g magnitude | 19.23 (0.01) | |||||||||
| Pan r magnitude | 18.44 (0.01) | |||||||||
| Pan i magnitude | 17.25 (0.003) | |||||||||
| Pan z magnitude | 16.64 (0.003) | |||||||||
| Pan y magnitude | 16.34 (0.006) | |||||||||
| E(B-V) | 0.033 | |||||||||
* 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.