All names: WDS J09221+3940A, Gaia EDR3 812448078274747520, GALEX J092203.4+394002, Gaia DR2 812448078274747520, Gaia DR3 812448078274747520, SDSS J092203.36+394002.0, ** SKF 1719A, WD 0918+398, SDSS J092203.36+394002.1
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | MWDD H | Gaia DR2 | 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 | 09 22 03.36 (0.08) | 09 22 03.37 | 09 22 03.36 (0.1) | 09 22 03.36 | 09 22 03.36 (0.08) | 09 22 03.36 | 09 22 03.41 | 09 22 03.36 | ||||
| Declination | 39 40 01.72 (0.06) | 39 40 02.05 | 39 40 01.73 (0.09) | 39 40 01.99 | 39 40 02.09 (0.06) | 39 40 02.02 | 39 39 59.04 | 39 40 02.06 | ||||
| Spectral type | DA+M | DA+M | DA | DA | DA+M | DA d | DA+M | |||||
| Effective temperature | [K] | 22401.0 | 18542.0 (297) | 19710.0 (300) | 20647.0 (203) | 20580.0 (218) | ||||||
| log(g) | [cgs] | 8.11 | 7.78 (0.06) | 7.90 (0.05) | 7.49 (0.04) | 7.46 (0.04) | ||||||
| Mass | [M☉] | 0.694 | 0.5 (0.03) | 0.57 (0.03) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0551 | 0.0617 | |||||||||
| 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] | 4.48 (0.1) | 4.30 (0.2) | 4.48 (0.1) | ||||||||
| Distance | [pc] | 223.13 (5) | 232.62 (9) | 202.00 (55) | 223.13 (5) | |||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.473630216 (0.09) | -4.570730158 (0.2) | -4.474 (0.09) | ||||||||
| Proper motion (declination) | [mas/yr] | -23.29951533 (0.07) | -23.61833504 (0.2) | -23.3 (0.07) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.55 (0.01) | 17.58 | 17.55 (0.01) | 17.58 (0.02) | 17.58 | 17.56 (0.02) | ||||||
| g magnitude | 17.42 (0.005) | 17.41 | 17.42 (0.005) | 17.41 (0.02) | 17.42 | 17.40 (0.02) | ||||||
| r magnitude | 17.70 (0.006) | 17.79 | 17.70 (0.006) | 17.79 (0.03) | 17.79 | 17.77 (0.03) | ||||||
| i magnitude | 18.07 (0.009) | 18.17 | 18.07 (0.009) | 18.17 (0.2) | 18.17 | 18.16 (0.2) | ||||||
| z magnitude | 18.15 (0.02) | 18.53 | 18.15 (0.02) | 18.53 (0.3) | 18.53 | 18.51 (0.3) | ||||||
| G magnitude | 17.57 (0.01) | 17.61 | 17.57 (0.003) | |||||||||
| BP magnitude | 17.46 (0.01) | 17.40 | ||||||||||
| RP magnitude | 16.89 (0.05) | 16.70 | ||||||||||
| Pan g magnitude | ||||||||||||
| Pan r magnitude | ||||||||||||
| Pan i magnitude | ||||||||||||
| Pan z magnitude | ||||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.011 | |||||||||||
* 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.