All names: Gaia DR3 561231932144411008, PM J02149+7746, WD 0209+775, 2MASS J02145697+7746000, Gaia EDR3 561231932144411008, TIC 395771880, WDJ021457.04+774559.88, J0214+7745, Gaia DR2 561231932144411008, 02149+7746, USNO-B1.0 1677-00021118, PSO J033.7428+77.7650, LSPM J0214+7746
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | 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 | 02 14 58.37 (0.09) | 02 14 58.33 (0.1) | 02 14 58.33 (0.1) | 02 14 58.37 | 02 14 57.04 (0.09) | 02 14 58.33 | 02 14 57.24 | |||||||
| Declination | 77 45 53.82 (0.1) | 77 45 54.01 (0.1) | 77 45 54.01 (0.1) | 77 45 53.82 | 77 45 59.89 (0.1) | 77 45 54.01 | 77 45 59.76 | |||||||
| Spectral type | DC | DC | DC | DC | DC | DC: | DC | DC | ||||||
| Effective temperature | [K] | 4798.0 (110) | 4804.0 (49) | 4647.8 (88) | 4400.0 (65) | 5480.0 (598) | 4860.0 (51) | |||||||
| log(g) | [cgs] | 8.18 (0.08) | 8.19 (0.02) | 8.09 (0.07) | 7.93 (0.04) | 8.00 (0) | 8.22 (0.02) | |||||||
| Mass | [M☉] | 0.691 (0.05) | 0.702 (0.02) | 0.528 (0.02) | 0.57 (0.1) | 0.722 (0.02) | ||||||||
| log(Luminosity) | [L☉] | -3.89 | ||||||||||||
| Cooling age | [Gyr] | 8.9500 | 6.3670 (0.2) | |||||||||||
| 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] | 25.20 (0.1) | 25.20 (0.1) | 25.20 (0.1) | 25.20 (0.2) | 25.20 (0.2) | 25.20 (0.2) | 25.20 | 25.20 (0.1) | 25.20 (0.2) | ||||
| Distance | [pc] | 39.68 (0.2) | 39.68 (0.2) | 39.68 (0.2) | 39.69 (0.2) | 39.69 (0.2) | 39.69 (0.2) | 67.40 (10) | 39.68 | 39.68 (0.2) | 39.69 (0.2) | |||
| Composition | H | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 265.6958514 (0.1) | 265.3381938 (0.3) | 265.696 (0.1) | 265.3381938 | |||||||||
| Proper motion (declination) | [mas/yr] | -379.2770698 (0.1) | -379.0570914 (0.3) | -379.277 (0.1) | -379.0570914 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 19.20 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.00 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.48 (0.1) | 16.48 (0.1) | 16.48 | 16.48 (0.1) | ||||||||||
| H magnitude | 17.50 (0.03) | 17.50 | ||||||||||||
| K magnitude | 15.89 (0.03) | 15.89 | ||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | 18.97 (0.02) | |||||||||||||
| r magnitude | 18.32 (0.01) | |||||||||||||
| i magnitude | 18.00 (0.008) | |||||||||||||
| z magnitude | 17.88 (0.007) | |||||||||||||
| G magnitude | 18.31 (0.02) | 18.33 | 18.33 | 18.31 | 18.31 (0.003) | 18.33 | ||||||||
| BP magnitude | 18.86 (0.02) | 18.86 | 18.86 | |||||||||||
| RP magnitude | 17.65 (0.01) | 17.62 | 17.62 | |||||||||||
| Pan g magnitude | 18.96 (0.02) | 18.96 (0.02) | 18.97 (0.01) | |||||||||||
| Pan r magnitude | 18.30 (0.01) | 18.30 (0.01) | 18.32 (0.01) | |||||||||||
| Pan i magnitude | 18.00 (0.01) | 18.00 (0.01) | 18.00 (0.008) | |||||||||||
| Pan z magnitude | 17.89 (0.009) | 17.89 (0.009) | 17.88 (0.007) | |||||||||||
| Pan y magnitude | 17.84 (0.02) | 17.84 (0.02) | 17.82 (0.009) | |||||||||||
| E(B-V) | 0.002 | |||||||||||||
* 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.