All names: SDSS J151817.97+455334.2, WIRED J151817.97+455334.1, Gaia DR3 1395519021470020096, GALEX J151818.0+455334, [HHD2009] SDSS J1518+4553, [SGR2010] J1518+4553, Gaia EDR3 1395519021470020096, SDSS J151817.97+455334.1, TIC 233654296, Gaia DR2 1395519021470020096, 2MASS J15181797+4553345, SDSS J151817.98+455334.2, WD 1516+460
| 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 | 15 18 17.97 (0.2) | 15 18 17.98 | 15 18 17.97 (0.3) | 15 18 17.97 | 15 18 17.97 (0.2) | 15 18 17.97 | 15 18 17.30 | 15 18 17.97 | |||
| Declination | 45 53 34.14 (0.2) | 45 53 34.18 | 45 53 34.14 (0.3) | 45 53 34.12 | 45 53 34.20 (0.2) | 45 53 34.20 | 45 53 31.56 | 45 53 34.20 | |||
| Spectral type | DA+M | DA+M1 | DA:+M | DA: d | DA+M | ||||||
| Effective temperature | [K] | 9509.0 (452) | 6300.0 (1) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 8.59 (0.5) | 8.60 (0.2) | 5.15 (0.2) | |||||||
| Mass | [M☉] | 0.97 (0.2) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.24 (0.3) | 1.32 (0.4) | 1.24 (0.3) | |||||||
| Distance | [pc] | 803.40 (179) | 756.17 (206) | 772.00 (102) | 803.41 (179) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.190117025 (0.3) | -2.527997312 (0.5) | -1.19 (0.3) | -1.3 | ||||||
| Proper motion (declination) | [mas/yr] | -3.749641079 (0.3) | -4.634336064 (0.8) | -3.75 (0.3) | -3.4 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.42 (0.1) | ||||||||||
| H magnitude | 15.30 (0.1) | ||||||||||
| K magnitude | 14.95 (0.2) | ||||||||||
| u magnitude | 19.96 (0.04) | 19.93 | 19.97 (0.04) | 19.93 (0.04) | 19.93 | 19.97 (0.04) | |||||
| g magnitude | 19.24 (0.01) | 19.23 | 19.22 (0.01) | 19.23 (0.02) | 19.23 | 19.23 (0.02) | |||||
| r magnitude | 18.36 (0.008) | 18.33 | 18.34 (0.01) | 18.33 (0.02) | 18.33 | 18.34 (0.02) | |||||
| i magnitude | 17.69 (0.007) | 17.67 | 17.67 (0.01) | 17.67 (0.02) | 17.67 | 17.67 (0.02) | |||||
| z magnitude | 17.26 (0.01) | 17.25 | 17.26 (0.02) | 17.25 (0.02) | 17.25 | 17.26 (0.02) | |||||
| G magnitude | 18.27 (0.02) | 18.25 | 18.27 (0.004) | ||||||||
| BP magnitude | 18.94 (0.02) | 18.99 | |||||||||
| RP magnitude | 17.28 (0.01) | 17.28 | |||||||||
| Pan g magnitude | 19.16 (0.005) | ||||||||||
| Pan r magnitude | 18.33 (0.005) | ||||||||||
| Pan i magnitude | 17.68 (0.004) | ||||||||||
| Pan z magnitude | 17.36 (0.01) | ||||||||||
| Pan y magnitude | 17.17 (0.01) | ||||||||||
| 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.