All names: [SGR2010] J1242-0853, GALEX J124250.4-085331, TIC 156584775, Gaia DR3 3675033576217030656, 2MASS J12425039-0853319, Gaia DR2 3675033576217030656, WD 1240-086, Gaia EDR3 3675033576217030656, SDSS J124250.39-085332.0, SDSS J124250.40-085332.0
| 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 | 12 42 50.40 (0.4) | 12 42 50.39 | 12 42 50.40 (0.6) | 12 42 50.40 | 12 42 50.40 (0.4) | 12 42 49.61 | 12 42 50.40 | |||
| Declination | -08 53 32.09 (0.2) | -08 53 32.03 | -08 53 32.09 (0.4) | -08 53 32.03 | -08 53 32.12 (0.2) | -08 53 31.92 | -08 53 32.03 | |||
| Spectral type | WD+M | D+M2 | WD+M2 | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (2) | ||||||||
| log(g) | [cgs] | 5.06 (0.08) | ||||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.99 (0.5) | 2.08 (0.6) | 1.99 (0.5) | ||||||
| Distance | [pc] | 502.65 (121) | 480.97 (139) | 502.66 (121) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 0.447853306 (0.6) | 0.266426034 (1) | 0.448 (0.6) | ||||||
| Proper motion (declination) | [mas/yr] | 1.987958083 (0.4) | 0.14976859 (0.7) | 1.988 (0.4) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | yes | WDMS | |||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.71 (0.2) | |||||||||
| H magnitude | 15.93 (0.2) | |||||||||
| K magnitude | ||||||||||
| u magnitude | 20.16 (0.05) | 20.17 | 20.16 (0.06) | 20.16 | 20.17 (0.06) | |||||
| g magnitude | 19.94 (0.02) | 19.97 | 19.95 (0.02) | 19.95 | 19.97 (0.03) | |||||
| r magnitude | 19.45 (0.01) | 19.48 | 19.46 (0.01) | 19.46 | 19.48 (0.02) | |||||
| i magnitude | 18.57 (0.01) | 18.59 | 18.59 (0.01) | 18.57 | 18.59 (0.01) | |||||
| z magnitude | 17.97 (0.02) | 17.99 | 17.98 (0.03) | 17.98 | 17.99 (0.03) | |||||
| G magnitude | 19.43 (0.05) | 19.34 | 19.43 (0.005) | |||||||
| BP magnitude | 19.86 (0.05) | 19.82 | ||||||||
| RP magnitude | 18.16 (0.02) | 18.18 | ||||||||
| Pan g magnitude | 19.89 (0.01) | |||||||||
| Pan r magnitude | 19.43 (0.01) | |||||||||
| Pan i magnitude | 18.58 (0.01) | |||||||||
| Pan z magnitude | 18.13 (0.004) | |||||||||
| Pan y magnitude | 17.89 (0.02) | |||||||||
| E(B-V) | 0.024 | |||||||||
* 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.