All names: GALEX J080846.6+182558, SDSS J080846.60+182558.3, WD 0805+185, Gaia EDR3 669365915735191296, SDSS J080846.59+182558.1, LAMOST J080846.60+182558.1, 2MASS J08084659+1825584, WISEA J080846.60+182558.4, Gaia DR2 669365915733334016, WISE J080846.60+182558.4, TIC 386839992, WIRED J080846.59+182558.2, SDSS J080846.60+182558.2, SDSS J080846.59+182558.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 08 46.58 (1) | 08 08 46.60 | 08 08 46.58 (1) | 08 08 46.59 | 08 08 46.60 | 08 08 46.73 | 08 08 46.60 | |||||
| Declination | 18 25 57.89 (1) | 18 25 58.16 | 18 25 57.90 (1) | 18 25 58.19 | 18 25 58.16 | 18 25 53.40 | 18 25 58.26 | |||||
| Spectral type | DA+M | DA+M | DA+M? | DA+dMe | DA dM | DA+M | ||||||
| Effective temperature | [K] | 31143.0 (617) | 30071.0 (575) | 6300.0 (2) | ||||||||
| log(g) | [cgs] | 8.12 (0.1) | 8.30 (0.1) | 5.05 (0.07) | ||||||||
| Mass | [M☉] | 0.72 (0.09) | 0.82 (0.08) | |||||||||
| log(Luminosity) | [L☉] | -0.90 (0.1) | ||||||||||
| Cooling age | [Gyr] | 0.0087 (0.002) | ||||||||||
| 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] | |||||||||||
| Distance | [pc] | 534.00 (56) | ||||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | |||||||||||
| Proper motion (declination) | [mas/yr] | |||||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | ||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.63 (0.05) | |||||||||||
| H magnitude | 14.99 (0.08) | |||||||||||
| K magnitude | 14.91 (0.09) | |||||||||||
| u magnitude | 18.07 (0.01) | 18.09 | 18.07 (0.01) | 18.08 | 18.06 (0.03) | |||||||
| g magnitude | 18.07 (0.006) | 18.13 | 18.07 (0.006) | 18.12 | 18.12 (0.02) | |||||||
| r magnitude | 17.83 (0.007) | 17.88 | 17.83 (0.007) | 17.88 | 17.88 (0.01) | |||||||
| i magnitude | 17.25 (0.007) | 17.30 | 17.25 (0.007) | 17.29 | 17.29 (0.01) | |||||||
| z magnitude | 16.83 (0.01) | 16.91 | 16.83 (0.01) | 16.91 | 16.91 (0.02) | |||||||
| G magnitude | 18.52 | 18.54 | ||||||||||
| BP magnitude | ||||||||||||
| RP magnitude | ||||||||||||
| Pan g magnitude | 18.13 (0.008) | |||||||||||
| Pan r magnitude | 17.87 (0.007) | |||||||||||
| Pan i magnitude | 17.31 (0.004) | |||||||||||
| Pan z magnitude | 16.96 (0.005) | |||||||||||
| Pan y magnitude | 16.80 (0.006) | |||||||||||
| E(B-V) | 0.029 | |||||||||||
* 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.