All names: 2MASS J22305115+1257067, [HHD2009] SDSS J2230+1257, SDSS J223051.15+125706.9, WIRED J223051.15+125706.8, TIC 51808805, Gaia DR2 2730988284108725632, SDSS J223051.15+125706.8, 1RXS J223051.6+125713, Gaia DR3 2730988284108725632, [SGR2010] J2230+1257, Gaia EDR3 2730988284108725632, WD 2228+126
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 30 51.13 (0.2) | 22 30 51.15 | 22 30 51.13 (0.4) | 22 30 51.15 | 22 30 51.15 (0.2) | 22 30 51.15 | 22 30 50.93 | 22 30 51.15 | |||
| Declination | 12 57 06.57 (0.2) | 12 57 06.84 | 12 57 06.58 (0.4) | 12 57 06.80 | 12 57 06.90 (0.2) | 12 57 06.81 | 12 57 07.20 | 12 57 06.87 | |||
| Spectral type | DA+M | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 19640.0 (1131) | 6302.0 (5) | 6301.0 (4) | |||||||
| log(g) | [cgs] | 8.10 (0.2) | 6.78 (0.3) | 6.76 (0.3) | |||||||
| Mass | [M☉] | 0.68 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.70 (0.3) | 2.09 (0.4) | 1.70 (0.3) | |||||||
| Distance | [pc] | 589.72 (91) | 478.83 (93) | 85.00 (83) | 589.73 (91) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.53585116 (0.3) | -15.2730107 (0.6) | -14.536 (0.3) | -14.0 | ||||||
| Proper motion (declination) | [mas/yr] | -20.7633816 (0.3) | -20.74906464 (0.6) | -20.763 (0.3) | -20.5 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.28 (0.1) | ||||||||||
| H magnitude | 15.62 (0.1) | ||||||||||
| K magnitude | 15.37 (0.2) | ||||||||||
| u magnitude | 19.79 (0.04) | 19.80 | 19.82 (0.04) | 19.80 (0.04) | 19.80 | 19.77 (0.04) | |||||
| g magnitude | 19.51 (0.01) | 19.53 | 19.52 (0.01) | 19.53 (0.02) | 19.53 | 19.52 (0.02) | |||||
| r magnitude | 19.35 (0.01) | 19.35 | 19.36 (0.01) | 19.35 (0.02) | 19.35 | 19.34 (0.02) | |||||
| i magnitude | 18.50 (0.01) | 18.49 | 18.50 (0.01) | 18.49 (0.02) | 18.49 | 18.47 (0.02) | |||||
| z magnitude | 17.76 (0.02) | 17.78 | 17.79 (0.02) | 17.78 (0.02) | 17.78 | 17.75 (0.02) | |||||
| G magnitude | 18.88 (0.05) | 18.91 | 18.88 (0.004) | ||||||||
| BP magnitude | 19.47 (0.05) | 19.53 | |||||||||
| RP magnitude | 18.03 (0.02) | 18.01 | |||||||||
| Pan g magnitude | 19.47 (0.02) | ||||||||||
| Pan r magnitude | 19.33 (0.007) | ||||||||||
| Pan i magnitude | 18.49 (0.006) | ||||||||||
| Pan z magnitude | 17.93 (0.009) | ||||||||||
| Pan y magnitude | 17.60 (0.008) | ||||||||||
| E(B-V) | 0.057 | ||||||||||
* 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.