All names: Gaia DR3 3655250883836759808, SDSS J144330.93+013405.9, EQ J1443+0134, SDSS J144330.93+013405.8, 2QZ J144330.9+013405, WD 1440+017, Gaia DR2 3655250883836759808, Gaia EDR3 3655250883836759808
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Tremblay et al. 2011 | Mukadam et al. 2004 | Vincent et al. 2024 | Simbad | White Dwarf Research Corporation | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2004 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 43 30.88 (0.2) | 14 43 30.94 | 14 43 30.88 (0.2) | 14 43 30.88 | 14 43 30.93 (0.2) | 14 43 30.93 | 14 43 29.50 | 14 43 30.93 | 14 43 30.93 | |||||||
| Declination | 01 34 05.96 (0.2) | 01 34 05.96 | 01 34 05.96 (0.2) | 01 34 05.96 | 01 34 05.94 (0.2) | 01 34 05.96 | 01 34 00.48 | 01 34 05.84 | 01 34 05.84 | |||||||
| Spectral type | DA | DA | DA | DAV | DA | DA | DA | DA | ||||||||
| Effective temperature | [K] | 10700.0 (240) | 10450.0 | 11068.0 (578) | 10830.0 | 10827.0 (142) | 10485.0 (131) | |||||||||
| log(g) | [cgs] | 8.06 (0.2) | 7.85 | 8.00 (0.08) | 8.15 | 8.44 (0.2) | 8.43 (0.3) | |||||||||
| Mass | [M☉] | 0.64 (0.1) | 0.604 (0.07) | 0.862 (0.2) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 0.5888 | ||||||||||||||
| log(H/He) | ||||||||||||||||
| log(C/He) | ||||||||||||||||
| log(Ca/He) | ||||||||||||||||
| log(Ca/H) | ||||||||||||||||
| log(C/H) | ||||||||||||||||
| log(N/H) | ||||||||||||||||
| log(O/H) | ||||||||||||||||
| log(Na/H) | ||||||||||||||||
| log(Mg/H) | ||||||||||||||||
| log(Al/H) | ||||||||||||||||
| log(Si/H) | ||||||||||||||||
| log(P/H) | ||||||||||||||||
| log(S/H) | ||||||||||||||||
| log(Sc/H) | ||||||||||||||||
| log(Ti/H) | ||||||||||||||||
| log(Cr/H) | ||||||||||||||||
| log(Mn/H) | ||||||||||||||||
| log(Fe/H) | ||||||||||||||||
| log(Ni/H) | ||||||||||||||||
| Parallax | [mas] | 4.33 (0.2) | 4.12 (0.2) | 4.33 | 4.33 (0.2) | |||||||||||
| Distance | [pc] | 230.92 (10) | 242.73 (14) | 230.92 | 230.92 (10) | |||||||||||
| Composition | H | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -48.06119502 (0.2) | -47.79097146 (0.4) | -48.061 (0.2) | -45.2 | -42.0 | ||||||||||
| Proper motion (declination) | [mas/yr] | 1.729800671 (0.2) | 2.165779723 (0.4) | 1.73 (0.2) | 5.4 | 4.0 | ||||||||||
| Variability | VAR | VAR | ||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | ||||||||||||||||
| V magnitude | 18.70 | 18.72 | ||||||||||||||
| R magnitude | ||||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 18.70 (0.09) | |||||||||||||||
| H magnitude | 18.60 (0.2) | |||||||||||||||
| K magnitude | ||||||||||||||||
| u magnitude | 19.17 (0.03) | 19.17 (0.03) | 19.17 (0.03) | 19.18 | 19.16 (0.03) | 19.18 (0.03) | ||||||||||
| g magnitude | 18.68 (0.008) | 18.68 (0.008) | 18.71 (0.02) | 18.72 | 18.71 (0.02) | 18.72 (0.02) | ||||||||||
| r magnitude | 18.81 (0.01) | 18.81 (0.01) | 18.84 (0.02) | 18.84 | 18.83 (0.02) | 18.84 (0.02) | ||||||||||
| i magnitude | 18.95 (0.01) | 18.95 (0.01) | 18.97 (0.02) | 18.97 | 18.97 (0.02) | 18.97 (0.02) | ||||||||||
| z magnitude | 19.01 (0.05) | 19.01 (0.05) | 19.02 (0.06) | 19.04 | 19.03 (0.06) | 19.04 (0.06) | ||||||||||
| G magnitude | 18.73 (0.04) | 18.76 | 18.73 | 18.73 (0.004) | ||||||||||||
| BP magnitude | 18.75 (0.04) | 18.80 | ||||||||||||||
| RP magnitude | 18.73 (0.04) | 18.62 | ||||||||||||||
| Pan g magnitude | 18.71 (0.007) | |||||||||||||||
| Pan r magnitude | 18.83 (0.005) | |||||||||||||||
| Pan i magnitude | 18.99 (0.008) | |||||||||||||||
| Pan z magnitude | 19.15 (0.01) | |||||||||||||||
| Pan y magnitude | 19.32 (0.04) | |||||||||||||||
| E(B-V) | 0.034 | |||||||||||||||
| Period #1 | [s] | 968.9 | ||||||||||||||
| Amplitude #1 | [mma] | 7.5 | ||||||||||||||
| Period #2 | [s] | 1085.0 | ||||||||||||||
| Amplitude #2 | [mma] | 5.2 | ||||||||||||||
* 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.