All names: SDSS J151714.95+423924.7, WISE J151714.98+423924.8, WD 1515+428, CSO 577, UCAC4 664-059941, Gaia EDR3 1392703142127403520, 2XMM J151714.9+423925, 2MASS J15171493+4239248, WISEA J151714.97+423924.7, SDSS J151714.96+423924.7, TIC 233651598
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 17 14.98 (0.2) | 15 17 14.96 | 15 17 14.96 | 15 17 14.91 (113) | 15 17 15.10 | 15 17 14.96 | ||
| Declination | 42 39 24.90 (0.1) | 42 39 24.71 | 42 39 24.70 | 42 39 24.86 (114) | 42 39 21.96 | 42 39 24.71 | ||
| Spectral type | DA+M | DA+M | DA4.9 M | DA+M | ||||
| Effective temperature | [K] | 10307.0 (48) | 6300.0 (3) | |||||
| log(g) | [cgs] | 9.11 (0.04) | 5.00 (0.003) | |||||
| Mass | [M☉] | 1.25 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 4.08 (0.2) | ||||||
| Distance | [pc] | 244.95 (9) | ||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 33.41242039 (0.2) | 28.5 (3) | |||||
| Proper motion (declination) | [mas/yr] | -9.151671498 (0.2) | -5.8 (4) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | WDMS | ||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 13.59 (0.03) | |||||||
| H magnitude | 13.00 (0.02) | |||||||
| K magnitude | 12.77 (0.03) | |||||||
| u magnitude | 17.50 (0.01) | 17.54 | 17.50 (0.01) | 17.53 | 17.54 (0.04) | |||
| g magnitude | 17.06 (0.004) | 17.16 | 17.07 (0.004) | 17.15 | 17.14 (0.02) | |||
| r magnitude | 16.46 (0.004) | 16.58 | 16.45 (0.004) | 16.57 | 16.57 (0.01) | |||
| i magnitude | 15.49 (0.004) | 15.62 | 15.49 (0.004) | 15.61 | 15.61 (0.02) | |||
| z magnitude | 14.89 (0.005) | 15.03 | 14.89 (0.005) | 15.02 | 15.00 (0.01) | |||
| G magnitude | 16.86 (0.04) | |||||||
| BP magnitude | 16.96 (0.04) | |||||||
| RP magnitude | 15.08 (0.02) | |||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.021 | |||||||
* 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.