All names: TIC 272699170, Gaia DR2 4426369831856710528, SDSS J155040.53+052150.3, WISEA J155040.49+052150.7, Gaia EDR3 4426369831856710528, WIRED J155040.53+052150.2, WISE J155040.50+052151.0, 2MASS J15504053+0521503, SDSS J155040.54+052150.3, SDSS J155040.53+052150.1, SDSS J155040.53+052150.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 50 40.49 (0.7) | 15 50 40.53 | 15 50 40.49 (0.4) | 15 50 40.54 | 15 50 40.53 | 15 50 40.54 | |||
| Declination | 05 21 50.77 (0.5) | 05 21 50.19 | 05 21 50.77 (0.2) | 05 21 50.26 | 05 21 50.19 | 05 21 50.25 | |||
| Spectral type | DA+M | DA+M | DA+M | ||||||
| Effective temperature | [K] | 13204.0 (719) | 7777.0 (182) | ||||||
| log(g) | [cgs] | 7.89 (0.2) | 7.42 (0.2) | ||||||
| Mass | [M☉] | 0.55 (0.1) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.40 (0.6) | 3.67 (0.4) | ||||||
| Distance | [pc] | 417.00 (109) | 272.73 (32) | 380.00 (42) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -39.93799177 (1) | -45.59407503 (0.7) | -25.0 (3) | |||||
| Proper motion (declination) | [mas/yr] | 1.933827531 (0.7) | 2.490199021 (0.6) | 0.0 (3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.24 (0.09) | ||||||||
| H magnitude | 15.61 (0.1) | ||||||||
| K magnitude | 15.17 (0.2) | ||||||||
| u magnitude | 19.44 (0.03) | 19.50 | 19.44 (0.03) | 19.50 (0.03) | |||||
| g magnitude | 18.97 (0.009) | 19.04 | 18.97 (0.009) | 19.04 (0.02) | |||||
| r magnitude | 18.88 (0.01) | 19.00 | 18.88 (0.01) | 19.00 (0.02) | |||||
| i magnitude | 18.19 (0.009) | 18.41 | 18.19 (0.009) | 18.41 (0.01) | |||||
| z magnitude | 17.52 (0.02) | 17.63 | 17.52 (0.01) | 17.63 (0.02) | |||||
| G magnitude | 19.39 (0.08) | 19.39 | |||||||
| BP magnitude | 19.00 (0.08) | 19.07 | |||||||
| RP magnitude | 17.74 (0.03) | 17.73 | |||||||
| Pan g magnitude | 19.02 (0.008) | ||||||||
| Pan r magnitude | 18.97 (0.01) | ||||||||
| Pan i magnitude | 18.37 (0.01) | ||||||||
| Pan z magnitude | 17.75 (0.01) | ||||||||
| Pan y magnitude | 17.45 (0.01) | ||||||||
| E(B-V) | 0.041 | ||||||||
* 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.