All names: GALEX J075005.5+393301, Gaia DR2 920519174953301760, 2MASS J07500557+3933014, SDSS J075005.57+393301.5, Gaia EDR3 920519174953301760, TIC 9233324, WIRED J075005.57+393301.5, Gaia DR3 920519174953301760, WD 0746+396
| 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 | 07 50 05.58 (0.2) | 07 50 05.57 | 07 50 05.58 (0.3) | 07 50 05.57 | 07 50 05.57 (0.2) | 07 50 05.57 | 07 50 04.97 | 07 50 05.57 | |||
| Declination | 39 33 01.48 (0.2) | 39 33 01.52 | 39 33 01.48 (0.3) | 39 33 01.51 | 39 33 01.53 (0.2) | 39 33 01.54 | 39 32 59.64 | 39 33 01.52 | |||
| Spectral type | DA+M | DA+dM | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 17707.0 (2456) | 6300.0 (1) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 7.65 (0.5) | 8.56 (0.2) | 10.00 (0.06) | |||||||
| Mass | [M☉] | 0.44 (0.3) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.28 (0.3) | 2.05 (0.5) | 1.28 (0.3) | |||||||
| Distance | [pc] | 779.97 (175) | 488.93 (123) | 779.97 (175) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 4.434957357 (0.3) | 3.84470586 (0.6) | 4.435 (0.3) | 7.0 | ||||||
| Proper motion (declination) | [mas/yr] | -3.275126455 (0.2) | -4.233216159 (0.4) | -3.275 (0.2) | -5.2 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.39 (0.1) | ||||||||||
| H magnitude | 15.59 (0.1) | ||||||||||
| K magnitude | 15.40 (0.2) | ||||||||||
| u magnitude | 20.74 (0.07) | 20.74 | 20.73 (0.07) | 20.74 (0.07) | 20.74 | 20.73 (0.07) | |||||
| g magnitude | 19.75 (0.02) | 19.76 | 19.75 (0.02) | 19.76 (0.02) | 19.76 | 19.75 (0.02) | |||||
| r magnitude | 18.77 (0.01) | 18.78 | 18.77 (0.01) | 18.78 (0.01) | 18.78 | 18.77 (0.01) | |||||
| i magnitude | 18.02 (0.008) | 18.02 | 18.02 (0.008) | 18.02 (0.02) | 18.02 | 18.02 (0.02) | |||||
| z magnitude | 17.59 (0.02) | 17.59 | 17.60 (0.02) | 17.59 (0.03) | 17.59 | 17.58 (0.03) | |||||
| G magnitude | 18.63 (0.04) | 18.63 | 18.63 (0.005) | ||||||||
| BP magnitude | 19.40 (0.04) | 19.39 | |||||||||
| RP magnitude | 17.65 (0.01) | 17.63 | |||||||||
| Pan g magnitude | 19.62 (0.01) | ||||||||||
| Pan r magnitude | 18.72 (0.006) | ||||||||||
| Pan i magnitude | 18.03 (0.004) | ||||||||||
| Pan z magnitude | 17.67 (0.008) | ||||||||||
| Pan y magnitude | 17.49 (0.005) | ||||||||||
| E(B-V) | 0.040 | ||||||||||
* 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.