All names: Gaia EDR3 2693066750836196224, Gaia DR2 2693066750836196224, Gaia DR3 2693066750836196224, WD 2120+039, SDSS J212309.39+040929.5, SDSS J212309.39+040929.52, HS 2120+0356, GALEX J212309.4+040930
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | SDSS DR10 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 23 09.39 (0.05) | 21 23 09.40 | 21 23 09.40 | 21 23 09.39 (0.06) | 21 23 09.39 | 21 23 09.39 | 21 23 09.41 (0.05) | 21 23 09.77 | |||||
| Declination | 04 09 29.42 (0.05) | 04 09 29.56 | 04 09 29.56 | 04 09 29.43 (0.07) | 04 09 29.51 | 04 09 29.42 | 04 09 29.63 (0.05) | 04 09 29.16 | |||||
| Spectral type | DA3 | DA+M: | DA | DA3 | DA3+dM | DA | |||||||
| Effective temperature | [K] | 17904.0 | 11683.0 (71) | 13582.0 (321) | |||||||||
| log(g) | [cgs] | 8.19 | 8.45 (0.03) | 7.64 (0.03) | |||||||||
| Mass | [M☉] | 0.735 | 0.8759999999999999 (0.02) | 0.428 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.1571 | |||||||||||
| 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] | 9.50 (0.06) | 9.52 (0.08) | 9.50 | 9.50 (0.06) | ||||||||
| Distance | [pc] | 105.32 (0.7) | 105.00 (0.9) | 105.32 | 105.32 (0.7) | ||||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -13.86843473 (0.06) | -13.83995552 (0.1) | -13.868 (0.06) | |||||||||
| Proper motion (declination) | [mas/yr] | -13.04635007 (0.06) | -12.94012961 (0.1) | -13.046 (0.06) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS? | yes | |||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 16.42 (0.006) | 16.42 (0.006) | 16.41 | 16.41 (0.01) | 16.42 (0.006) | ||||||||
| g magnitude | 16.12 (0.004) | 16.12 (0.004) | 16.13 | 16.13 (0.01) | 16.12 (0.004) | ||||||||
| r magnitude | 16.45 (0.005) | 16.45 (0.005) | 16.45 | 16.45 (0.01) | 16.45 (0.005) | ||||||||
| i magnitude | 16.72 (0.005) | 16.72 (0.005) | 16.71 | 16.71 (0.03) | 16.72 (0.005) | ||||||||
| z magnitude | 17.37 (0.01) | 17.37 (0.01) | 17.31 | 17.31 (0.2) | 17.37 (0.01) | ||||||||
| G magnitude | 16.24 (0.0008) | 16.26 | 16.24 | 16.24 (0.003) | |||||||||
| BP magnitude | 16.19 (0.003) | 16.18 | |||||||||||
| RP magnitude | 15.90 (0.04) | 15.86 | |||||||||||
| Pan g magnitude | |||||||||||||
| Pan r magnitude | |||||||||||||
| Pan i magnitude | |||||||||||||
| Pan z magnitude | |||||||||||||
| Pan y magnitude | |||||||||||||
| E(B-V) | 0.009 | ||||||||||||
* 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.