All names: Gaia DR3 588349805894986624, Gaia DR2 588349805894986624, Gaia EDR3 588349805894986624, 09402+0907W, LSPM J0940+0907W, LP 488-19, SDSS J094017.33+090711.9, WDJ094017.37+090712.17, 2MASS J09401737+0907123, PM J09402+0907W, USNO-B1.0 0991-00189511, WD 0937+093, J0940+0907, TIC 469015417, NLTT 22313
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 40 17.12 (0.1) | 09 40 17.13 (0.2) | 09 40 17.12 | 09 40 17.37 (0.1) | 09 40 17.13 | 09 40 18.02 | |||||
| Declination | 09 07 11.16 (0.1) | 09 07 11.19 (0.2) | 09 07 11.16 | 09 07 12.17 (0.1) | 09 07 11.19 | 09 07 15.60 | |||||
| Spectral type | DC | DC | DA | DC | DC | ||||||
| Effective temperature | [K] | 4691.0 (17) | 5120.0 (115) | 5281.0 (42) | |||||||
| log(g) | [cgs] | 7.52 (0.02) | 8.00 (0) | 7.95 (0.02) | |||||||
| Mass | [M☉] | 0.325 (0.01) | 0.58 (0.1) | 0.554 (0.02) | |||||||
| log(Luminosity) | [L☉] | -4.01 | |||||||||
| Cooling age | [Gyr] | 2.9500 | |||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| log(Mg/He) | |||||||||||
| log(Al/He) | |||||||||||
| log(Si/He) | |||||||||||
| log(P/He) | |||||||||||
| log(S/He) | |||||||||||
| log(Cl/He) | |||||||||||
| log(Sc/He) | |||||||||||
| log(Ti/He) | |||||||||||
| log(V/He) | |||||||||||
| log(Cr/He) | |||||||||||
| log(Mn/He) | |||||||||||
| log(Fe/He) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 20.46 (0.1) | 20.36 (0.3) | 20.36 (0.3) | 20.46 | 20.46 (0.1) | 20.36 (0.3) | ||||
| Distance | [pc] | 48.88 (0.4) | 49.12 (0.6) | 49.13 (0.6) | 43.10 (7) | 48.88 | 48.88 (0.4) | 49.13 (0.6) | |||
| Composition | He | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -236.7036086 (0.2) | -236.906684 (0.3) | -236.704 (0.2) | -236.906684 | ||||||
| Proper motion (declination) | [mas/yr] | -63.30544751 (0.1) | -62.89197812 (0.4) | -63.305 (0.1) | -62.89197812 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | yes | ||||||||||
| B magnitude | 18.40 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 17.60 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.82 (0.01) | 16.70 (0.2) | |||||||||
| H magnitude | 16.58 (0.02) | ||||||||||
| K magnitude | 16.44 (0.03) | 16.03 (0.3) | |||||||||
| u magnitude | 20.04 (0.05) | 20.03 (0.04) | |||||||||
| g magnitude | 18.58 (0.008) | ||||||||||
| r magnitude | 17.95 (0.007) | ||||||||||
| i magnitude | 17.71 (0.007) | ||||||||||
| z magnitude | 17.64 (0.02) | ||||||||||
| G magnitude | 17.99 (0.01) | 18.00 | 17.99 | 17.99 (0.003) | 18.00 | ||||||
| BP magnitude | 18.42 (0.01) | 18.46 | 18.46 | ||||||||
| RP magnitude | 17.40 (0.01) | 17.42 | 17.42 | ||||||||
| Pan g magnitude | 18.48 (0.005) | 18.48 (0.005) | |||||||||
| Pan r magnitude | 17.95 (0.005) | 17.95 (0.005) | |||||||||
| Pan i magnitude | 17.74 (0.005) | 17.74 (0.004) | |||||||||
| Pan z magnitude | 17.67 (0.006) | 17.67 (0.006) | |||||||||
| Pan y magnitude | 17.62 (0.009) | 17.62 (0.008) | |||||||||
| E(B-V) | 0.001 | ||||||||||
* 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.