All names: ** LDS 216A, Gaia DR2 5314641327199999360, 2MASS J08214734-5841281, USNO-B1.0 0313-00077299, NLTT 19427, TIC 342753081, Gaia DR3 5314641327199999360, L186-120, WD 0820-585, Gaia EDR3 5314641327199999360, L 186-120
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 21 47.34 (0.03) | 08 21 47.34 (0.04) | 08 21 47.34 (0.03) | 08 21 46.34 | |||
| Declination | -58 41 28.04 (0.04) | -58 41 28.04 (0.05) | -58 41 28.12 (0.04) | -58 41 39.48 | |||
| Spectral type | DA | DA5.5 | DA | ||||
| Effective temperature | [K] | 9180.0 (132) | |||||
| log(g) | [cgs] | 8.09 (0.06) | |||||
| Mass | [M☉] | 0.65 (0.04) | |||||
| log(Luminosity) | [L☉] | ||||||
| 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] | 0.27 (0.04) | 0.23 (0.05) | 0.27 (0.04) | |||
| Distance | [pc] | 3689.76 (545) | 4298.40 (976) | 61.00 | 3690.04 (545) | ||
| Composition | H | ||||||
| Proper motion (right ascension) | [mas/yr] | -1.815701203 (0.05) | -1.712993881 (0.1) | -1.816 (0.05) | |||
| Proper motion (declination) | [mas/yr] | 5.015410406 (0.04) | 5.006709337 (0.09) | 5.015 (0.04) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | yes | ||||||
| B magnitude | 16.40 | ||||||
| V magnitude | 16.59 | ||||||
| R magnitude | 15.90 | ||||||
| I magnitude | |||||||
| J magnitude | 14.81 (0.04) | ||||||
| H magnitude | 14.51 (0.04) | ||||||
| K magnitude | 14.36 (0.08) | ||||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 16.29 (0.003) | 16.30 | 16.29 (0.003) | ||||
| BP magnitude | 16.75 (0.003) | 16.77 | |||||
| RP magnitude | 15.64 (0.002) | 15.66 | |||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.155 | ||||||
* 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.