All names: Gaia DR3 4789516154317811456, APMPM J0424-4551, USNO-B1.0 0441-00035390, WD 0422-459, [SRH2004] A 7, Gaia DR2 4789516154317811456, WDJ042357.67-455042.27, 2MASS J04235767-4550422, TIC 153722995, LEHPM 3759, [SII2000] 152, 042357.67-455042.27, Gaia EDR3 4789516154317811456
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | O'Brien et al. 2022 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 23 57.52 (0.04) | 04 23 57.53 (0.04) | 04 23 57.52 | 04 23 57.67 (0.04) | 04 23 57.53 | 04 23 56.86 | ||||
| Declination | -45 50 50.51 (0.04) | -45 50 50.25 (0.05) | -45 50 50.51 | -45 50 42.27 (0.04) | -45 50 50.25 | -45 50 33.00 | ||||
| Spectral type | DA | DA | DA | DA9.5 | DA9.5 | |||||
| Effective temperature | [K] | 5552.0 (36) | 5550.0 (40) | 5600.0 (24) | ||||||
| log(g) | [cgs] | 7.95 (0.02) | 7.95 (0.02) | 7.97 (0.01) | ||||||
| Mass | [M☉] | 0.553 (0.01) | 0.569 (0.008) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 33.40 (0.04) | 33.40 (0.04) | 33.40 (0.04) | 33.39 (0.05) | 33.40 | 33.40 (0.04) | 33.39 (0.05) | ||
| Distance | [pc] | 29.94 (0.04) | 29.94 (0.04) | 29.94 (0.04) | 29.95 (0.04) | 29.94 | 29.94 (0.04) | 29.95 (0.04) | ||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -97.1376254 (0.05) | -97.12735518 (0.09) | -97.138 (0.05) | -97.12735518 | |||||
| Proper motion (declination) | [mas/yr] | -515.3649501 (0.05) | -515.1656583 (0.1) | -515.365 (0.05) | -515.1656583 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.81 | |||||||||
| V magnitude | 16.85 | |||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.57 (0.07) | |||||||||
| H magnitude | 15.14 (0.09) | |||||||||
| K magnitude | 14.89 (0.1) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.67 (0.004) | 16.68 | 16.67 | 16.67 (0.003) | 16.68 | |||||
| BP magnitude | 17.03 (0.004) | 17.05 | 17.05 | |||||||
| RP magnitude | 16.14 (0.004) | 16.15 | 16.15 | |||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.000 | |||||||||
* 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.