All names: J0809+1112, Gaia EDR3 649672906567630976, Gaia DR3 649672906567630976, NLTT 19026, USNO-B1.0 1012-00154734, SDSS J080940.18+111225.9, 2MASS J08094011+1112261, WIRED J080940.18+111226.0, PSO J122.4179+11.2072, TIC 443904445, SDSS J080940.18+111226.0, SDSS J080940.19+111226.0, LP 484-24, WDJ080940.11+111226.00, LSPM J0809+1112, Gaia DR2 649672906567630976
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Blouin et al. 2019 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 09 40.34 (0.1) | 08 09 40.18 | 08 09 40.33 (0.1) | 08 09 40.34 | 08 09 40.11 (0.1) | 08 09 40.33 | 08 09 40.19 | |||||||
| Declination | 11 12 26.11 (0.06) | 11 12 26.00 | 11 12 26.11 (0.07) | 11 12 26.11 | 11 12 26.00 (0.06) | 11 12 26.11 | 11 12 26.01 | |||||||
| Spectral type | DZ | DZ | DZ | DZ | DZ | DZ:DC | DZ | |||||||
| Effective temperature | [K] | 6452.0 (32) | 6375.0 (28) | 6720.0 (80) | 6677.0 (83) | 6301.0 (5) | ||||||||
| log(g) | [cgs] | 8.15 (0.01) | 8.12 (0.01) | 8.25 (0.03) | 8.26 (0.02) | 10.00 (0.003) | ||||||||
| Mass | [M☉] | 0.667 (0.01) | 0.645 (0.01) | 0.731 (0.02) | 0.741 (0.02) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 2.6100 | 2.9410 (0.2) | |||||||||||
| log(H/He) | -3.0 | -4.0 | ||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | -11.13 | -11.15 | -11.66 | |||||||||||
| 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] | 19.09 (0.1) | 19.04 (0.1) | 19.04 (0.1) | 19.04 (0.1) | 19.09 | 19.09 (0.1) | 19.04 (0.1) | ||||||
| Distance | [pc] | 52.39 (0.4) | 52.52 (0.4) | 52.52 (0.4) | 52.52 (0.4) | 52.39 | 52.39 (0.4) | 52.52 (0.4) | ||||||
| Composition | He | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 209.9967873 (0.1) | 210.2067177 (0.3) | 209.997 (0.1) | 210.2067177 | |||||||||
| Proper motion (declination) | [mas/yr] | 7.106125317 (0.08) | 7.056966056 (0.2) | 7.106 (0.08) | 7.056966056 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 17.80 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 17.30 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.74 (0.1) | 16.74 (0.1) | 16.74 (0.1) | |||||||||||
| H magnitude | 16.78 (0.07) | 16.78 (0.07) | ||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 18.36 (0.02) | 18.36 (0.02) | 18.36 (0.02) | 18.36 (0.02) | 18.35 (0.02) | |||||||||
| g magnitude | 17.72 (0.005) | 17.71 (0.005) | 17.71 (0.005) | 17.73 (0.02) | ||||||||||
| r magnitude | 17.53 (0.006) | 17.54 (0.002) | 17.53 (0.006) | 17.53 (0.01) | ||||||||||
| i magnitude | 17.51 (0.006) | 17.54 (0.003) | 17.51 (0.006) | 17.50 (0.02) | ||||||||||
| z magnitude | 17.54 (0.02) | 17.58 (0.004) | 17.54 (0.02) | 17.55 (0.02) | ||||||||||
| G magnitude | 17.53 (0.009) | 17.55 | 17.53 | 17.53 (0.003) | 17.55 | |||||||||
| BP magnitude | 17.72 (0.009) | 17.70 | 17.70 | |||||||||||
| RP magnitude | 17.20 (0.007) | 17.20 | 17.20 | |||||||||||
| Pan g magnitude | 17.71 (0.006) | 17.71 (0.005) | 17.71 (0.005) | |||||||||||
| Pan r magnitude | 17.54 (0.003) | 17.54 (0.002) | 17.54 (0.002) | |||||||||||
| Pan i magnitude | 17.54 (0.003) | 17.54 (0.003) | 17.54 (0.003) | |||||||||||
| Pan z magnitude | 17.58 (0.004) | 17.58 (0.004) | 17.58 (0.004) | |||||||||||
| Pan y magnitude | 17.63 (0.01) | 17.63 (0.01) | 17.63 (0.01) | |||||||||||
| 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.