All names: WD 0814+271, WISE J081732.75+265729.7, SDSS J081732.74+265729.9, USNO-B1.0 1169-00178209, WIRED J081732.74+265729.9, WISEA J081732.74+265729.6, ** SKF 1686A, TIC 97463563, [HHD2009] SDSS J0817+2657, Gaia DR2 683160487403471360, SDSS J081732.70+265729.9, WDS J03424+0054A, Gaia EDR3 683160487403471360, 2MASS J08173272+2657300
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 17 32.76 (0.8) | 08 17 32.74 | 08 17 32.74 | 08 17 32.74 (79) | 08 17 32.74 | 08 17 33.00 | 08 17 32.74 | ||||
| Declination | 26 57 29.16 (0.9) | 26 57 29.93 | 26 57 29.92 | 26 57 30.23 (50) | 26 57 29.92 | 26 57 27.36 | 26 57 29.93 | ||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA d | DA+M | |||||
| Effective temperature | [K] | 18542.0 (524) | 20070.0 (580) | 9268.0 (63) | 9150.0 (63) | ||||||
| log(g) | [cgs] | 7.72 (0.1) | 7.96 (0.09) | 8.42 (0.07) | 8.30 (0.07) | ||||||
| Mass | [M☉] | 0.48 (0.05) | 0.6 (0.05) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0692 | |||||||||
| 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] | 1032.00 (210) | |||||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.0 (2) | 13.9 | ||||||||
| Proper motion (declination) | [mas/yr] | -54.0 (1) | -56.6 | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | 19.30 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.90 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.23 (0.08) | ||||||||||
| H magnitude | 15.49 (0.09) | ||||||||||
| K magnitude | 15.51 (0.2) | ||||||||||
| u magnitude | 18.77 (0.02) | 18.81 | 18.77 (0.02) | 18.81 (0.02) | 18.81 | 18.79 (0.02) | |||||
| g magnitude | 18.59 (0.008) | 18.64 | 18.59 (0.008) | 18.64 (0.01) | 18.64 | 18.61 (0.01) | |||||
| r magnitude | 18.75 (0.01) | 18.78 | 18.75 (0.01) | 18.78 (0.02) | 18.78 | 18.77 (0.02) | |||||
| i magnitude | 18.26 (0.009) | 18.30 | 18.26 (0.009) | 18.30 (0.02) | 18.30 | 18.29 (0.02) | |||||
| z magnitude | 17.59 (0.01) | 17.65 | 17.61 (0.01) | 17.65 (0.02) | 17.65 | 17.63 (0.02) | |||||
| G magnitude | 18.58 (0.03) | 18.56 (0.01) | |||||||||
| BP magnitude | 18.72 (0.03) | ||||||||||
| RP magnitude | 17.76 (0.02) | ||||||||||
| Pan g magnitude | 18.61 (0.003) | ||||||||||
| Pan r magnitude | 18.77 (0.006) | ||||||||||
| Pan i magnitude | 18.27 (0.006) | ||||||||||
| Pan z magnitude | 17.73 (0.007) | ||||||||||
| Pan y magnitude | 17.41 (0.01) | ||||||||||
| E(B-V) | 0.028 | ||||||||||
* 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.