All names: WDJ201649.72-794553.12, CNS5 5030, SCR, TIC 401605868, 2MASS J20164976-7945532, WD 2008-799, Gaia DR2 6361559602963567744, SCR J2016-7945, WD 2009-799, SCR 2016-7945, Gaia DR3 6361559602963567744, Gaia EDR3 6361559602963567744
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Subasavage et al. 2009 | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 16 51.75 (0.03) | 20 16 51.69 (0.03) | 20 16 49.68 | 20 16 49.74 | 20 16 49.66 | 20 16 51.75 | 20 16 49.72 (0.03) | 20 16 51.69 | 20 16 42.74 | ||||
| Declination | -79 45 57.49 (0.03) | -79 45 57.35 (0.04) | -79 45 50.40 | -79 45 53.00 | -79 45 53.00 | -79 45 57.49 | -79 45 53.12 (0.03) | -79 45 57.35 | -79 45 38.88 | ||||
| Spectral type | DA | DA | DA8.5 | DC | DA8.5 | DA | DA8.5 | DA? | |||||
| Effective temperature | [K] | 5569.0 (35) | 5800.0 (160) | 5800.0 | 5800.0 (160) | 5807.0 (161) | 5636.0 (18) | ||||||
| log(g) | [cgs] | 7.94 (0.02) | 7.97 (0.06) | 7.97 (0.06) | 7.97 (0.007) | ||||||||
| Mass | [M☉] | 0.551 (0.01) | 0.57 (0.03) | 0.57 (0.03) | 0.569 (0.006) | ||||||||
| log(Luminosity) | [L☉] | -3.77 (0.03) | |||||||||||
| Cooling age | [Gyr] | 2.5300 | 2.3400 (0.2) | ||||||||||
| log(H/He) | -2.6 | ||||||||||||
| 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] | 41.41 (0.03) | 41.41 (0.03) | 41.40 (0.04) | 44.70 (2) | 40.06 (1) | 41.41 | 41.41 (0.03) | 41.40 (0.04) | 40.00 (1) | |||
| Distance | [pc] | 24.15 (0.02) | 24.15 (0.02) | 24.16 (0.02) | 22.37 (0.9) | 24.96 | 24.96 (0.8) | 24.50 | 24.15 | 24.15 (0.02) | 24.16 (0.02) | 25.00 (0.8) | |
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 338.8264388 (0.03) | 338.8942049 (0.07) | 338.826 (0.04) | 338.8942049 | ||||||||
| Proper motion (declination) | [mas/yr] | -273.0416076 (0.04) | -273.1114363 (0.07) | -273.042 (0.04) | -273.1114363 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | 16.35 | 16.35 | |||||||||||
| R magnitude | 15.96 | ||||||||||||
| I magnitude | 15.57 | ||||||||||||
| J magnitude | 15.11 (0.04) | 15.11 (0.04) | 15.11 (0.04) | ||||||||||
| H magnitude | 15.03 (0.08) | 15.03 (0.08) | 15.03 (0.08) | ||||||||||
| K magnitude | 14.64 (0.09) | 14.64 (0.09) | 14.64 (0.09) | ||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 16.17 (0.004) | 16.18 | 16.17 | 16.17 (0.003) | 16.18 | ||||||||
| BP magnitude | 16.53 (0.004) | 16.54 | 16.54 | ||||||||||
| RP magnitude | 15.65 (0.003) | 15.66 | 15.66 | ||||||||||
| Pan g magnitude | |||||||||||||
| Pan r magnitude | |||||||||||||
| Pan i magnitude | |||||||||||||
| Pan z magnitude | |||||||||||||
| Pan y magnitude | |||||||||||||
| 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.