All names: PM J08212+7120, Gaia EDR3 1122557636309502464, Gaia DR2 1122557636309502464, PSO J125.3010+71.3358, WDS J08212+7120AB, 2MASS J08211240+7120093, USNO-B1.0 1613-00078008, TIC 99726586, WDJ082112.34+712009.14, ** LDS 1677, 08212+7120
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Limoges et al. 2015 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 21 12.08 (0.1) | 08 21 12.09 (0.2) | 08 21 12.39 (59) | 08 21 12.09 | |||
| Declination | 71 20 08.95 (0.2) | 71 20 08.96 (0.3) | 71 20 09.56 (58) | 71 20 08.96 | |||
| Spectral type | DA | ||||||
| Effective temperature | [K] | 8690.0 (171) | |||||
| log(g) | [cgs] | 7.93 (0.2) | |||||
| Mass | [M☉] | 0.56 (0.1) | |||||
| log(Luminosity) | [L☉] | -3.04 | |||||
| Cooling age | [Gyr] | ||||||
| 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] | 13.19 (0.2) | 10.14 (0.4) | 10.14 (0.4) | |||
| Distance | [pc] | 75.83 (1) | 98.66 (3) | 56.80 (2) | 98.66 (3) | ||
| Composition | H | ||||||
| Proper motion (right ascension) | [mas/yr] | -76.68272577 (0.2) | -78.07634433 (0.5) | -68.0 | -74.0 (1) | -78.07634433 | |
| Proper motion (declination) | [mas/yr] | -16.63610624 (0.2) | -11.91705288 (0.5) | -15.0 | -8.0 (1) | -11.91705288 | |
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 16.50 | ||||||
| V magnitude | |||||||
| R magnitude | 16.20 | ||||||
| I magnitude | |||||||
| J magnitude | 15.94 | 15.95 (0.07) | |||||
| H magnitude | 15.56 | 15.56 (0.1) | |||||
| K magnitude | 15.18 | ||||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 16.86 (0.01) | 16.86 | 16.86 | ||||
| BP magnitude | 16.65 (0.01) | 16.64 | 16.64 | ||||
| RP magnitude | 16.23 (0.007) | 16.22 | 16.22 | ||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.003 | ||||||
* 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.