All names: WD 0025-032, WDJ002741.70-030058.38, HE 0025-0317, UCAC4 435-000634, 2MASS J00274169-0300586, Gaia DR3 2540674885904495744, Gaia EDR3 2540674885904495744, Gaia DR2 2540674885904495744, GALEX J002741.6-030058, TIC 284078637, PB 8252, HE0025-0317
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Voss et al. 2007 | Koester et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 27 41.67 (0.04) | 00 27 41.67 (0.07) | 00 27 41.70 | 00 27 41.67 | 00 27 41.70 (0.04) | 00 27 41.67 | 00 27 40.34 | ||||
| Declination | -03 00 58.57 (0.03) | -03 00 58.57 (0.05) | -03 00 58.00 | -03 00 58.57 | -03 00 58.38 (0.03) | -03 00 58.57 | -03 00 54.36 | ||||
| Spectral type | DBA | DB | DBA2.9 | DBA2.9 | |||||||
| Effective temperature | [K] | 18570.0 | 19602.0 (280) | 18658.0 (330) | |||||||
| log(g) | [cgs] | 8.29 | 8.59 (0.06) | 8.21 (0.02) | |||||||
| Mass | [M☉] | 0.777 | 0.722 (0.01) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.0170 | |||||||||
| log(H/He) | -3.13 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 10.31 (0.05) | 10.19 (0.09) | 10.31 | 10.31 (0.05) | 10.19 (0.09) | |||||
| Distance | [pc] | 97.04 (0.5) | 98.10 (0.8) | 97.04 | 97.04 (0.5) | 98.10 (0.8) | |||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -35.32650744 (0.07) | -35.27201824 (0.2) | -35.327 (0.07) | -35.27201824 | ||||||
| Proper motion (declination) | [mas/yr] | -12.07699429 (0.04) | -12.0640154 (0.1) | -12.077 (0.04) | -12.0640154 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.69 | 15.70 | 16.02 (0.1) | ||||||||
| V magnitude | 16.00 (0.1) | ||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.50 (0.1) | ||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 15.72 (0.005) | ||||||||||
| g magnitude | 16.00 (0.03) | 15.84 (0.004) | |||||||||
| r magnitude | 16.22 (0.2) | 16.22 (0.005) | |||||||||
| i magnitude | 16.50 (0.006) | ||||||||||
| z magnitude | 16.75 (0.01) | ||||||||||
| G magnitude | 16.02 (0.002) | 16.04 | 16.02 | 16.02 (0.003) | 16.04 | ||||||
| BP magnitude | 15.94 (0.002) | 15.90 | 15.90 | ||||||||
| RP magnitude | 16.17 (0.004) | 16.18 | 16.18 | ||||||||
| Pan g magnitude | 15.91 (0.005) | ||||||||||
| Pan r magnitude | 16.20 (0.004) | ||||||||||
| Pan i magnitude | 16.50 (0.004) | ||||||||||
| Pan z magnitude | 16.72 (0.006) | ||||||||||
| Pan y magnitude | 16.91 (0.006) | ||||||||||
| E(B-V) | 0.003 | ||||||||||
* 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.