All names: 2MASS J09121638+2344426, Gaia DR2 687260811073547776, ZTF J091216.37+234442.7, Gaia DR3 687260811073547776, TIC 85979208, WIRED J091216.37+234442.5, Gaia EDR3 687260811073547776, [SGR2010] J0912+2344, SDSS J091216.38+234442.5, CRTS J091216.3+234442, WD 0909+239, GALEX J091216.3+234442, LAMOST J091216.37+234442.5, SDSS J091216.38+234442.6, SDSS J091216.37+234442.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 12 16.38 (0.08) | 09 12 16.38 | 09 12 16.38 (0.1) | 09 12 16.37 | 09 12 16.38 (0.08) | 09 12 15.62 | 09 12 16.38 | |||
| Declination | 23 44 42.62 (0.06) | 23 44 42.56 | 23 44 42.62 (0.08) | 23 44 42.50 | 23 44 42.67 (0.06) | 23 44 38.76 | 23 44 42.57 | |||
| Spectral type | DA+M | DA+M | DA1.7 M | DA+M | ||||||
| Effective temperature | [K] | 30071.0 (245) | 7639.0 (38) | |||||||
| log(g) | [cgs] | 8.08 (0.05) | 7.91 (0.04) | |||||||
| Mass | [M☉] | 0.69 (0.03) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.05 (0.1) | 2.07 (0.2) | 2.05 (0.1) | ||||||
| Distance | [pc] | 487.55 (25) | 482.04 (36) | 487.54 (25) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.485461417 (0.1) | -4.613986731 (0.2) | -4.485 (0.1) | ||||||
| Proper motion (declination) | [mas/yr] | -3.033196035 (0.08) | -3.303089145 (0.1) | -3.033 (0.08) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | 17.30 | |||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.44 (0.04) | |||||||||
| H magnitude | 14.74 (0.05) | |||||||||
| K magnitude | 14.43 (0.06) | |||||||||
| u magnitude | 17.65 (0.01) | 17.60 | 17.62 (0.01) | 17.60 | 17.61 (0.02) | |||||
| g magnitude | 17.66 (0.005) | 17.71 | 17.68 (0.005) | 17.70 | 17.68 (0.02) | |||||
| r magnitude | 17.67 (0.006) | 17.67 | 17.71 (0.006) | 17.66 | 17.64 (0.02) | |||||
| i magnitude | 17.11 (0.005) | 17.15 | 17.11 (0.005) | 17.14 | 17.12 (0.02) | |||||
| z magnitude | 16.63 (0.01) | 16.63 | 16.62 (0.01) | 16.62 | 16.61 (0.03) | |||||
| G magnitude | 17.32 (0.01) | 17.33 | 17.32 (0.004) | |||||||
| BP magnitude | 17.64 (0.01) | 17.63 | ||||||||
| RP magnitude | 16.68 (0.01) | 16.70 | ||||||||
| Pan g magnitude | 17.65 (0.01) | |||||||||
| Pan r magnitude | 17.62 (0.02) | |||||||||
| Pan i magnitude | 17.13 (0.009) | |||||||||
| Pan z magnitude | 16.70 (0.006) | |||||||||
| Pan y magnitude | 16.54 (0.03) | |||||||||
| E(B-V) | 0.036 | |||||||||
* 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.