All names: WD 1733-544, UCAC4 178-207722, GJ 4012, L270-137, 2MASS J17370071-5425565, NLTT 45102, NSV 9208, TIC 74097450, BPM 24960, CNS5 4347, Gaia DR2 5921433963191695872, L 270-137, LTT 6999, WDJ173700.72-542556.56, uvby98 986270137, Gaia DR3 5921433963191695872, WISEA J173700.59-542601.8, Gaia EDR3 5921433963191695872, USNO-B1.0 0355-00740073, LAWD 68
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Bedard et al. 2017 | Stilism | Koester et al. 2009 | Bergeron et al. 2001 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 37 00.55 (0.03) | 17 37 00.56 (0.06) | 17 37 00.55 | 17 37 00.72 (0.03) | 17 37 00.56 | 17 37 18.62 | |||||||
| Declination | -54 26 03.88 (0.03) | -54 26 03.65 (0.05) | -54 26 03.88 | -54 25 56.56 (0.03) | -54 26 03.65 | -54 25 48.00 | |||||||
| Spectral type | DA | DA | DA | DA | DAs | DA8 | |||||||
| Effective temperature | [K] | 6567.0 (82) | 6542.0 (85) | 6165.0 (7) | 6520.0 (150) | 6520.0 (150) | 7080.0 (34) | ||||||
| log(g) | [cgs] | 8.27 (0.03) | 8.35 (0.1) | 7.23 (0.01) | 8.13 (0.03) | 8.24 (0.03) | 8.41 (0.007) | ||||||
| Mass | [M☉] | 0.764 (0.02) | 0.67 (0.02) | 0.74 (0.02) | 0.858 (0.007) | ||||||||
| log(Luminosity) | [L☉] | -3.65 (0.01) | -3.72 (0.02) | ||||||||||
| Cooling age | [Gyr] | 2.3700 (0.1) | 3.1500 (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] | 49.41 (0.04) | 49.41 (0.04) | 49.42 (0.06) | 45.60 (0.8) | 49.00 (1) | 49.41 | 49.41 (0.04) | 49.42 (0.06) | 45.60 (1) | |||
| Distance | [pc] | 20.24 (0.02) | 20.24 (0.02) | 20.23 (0.02) | 21.90 (0.4) | 21.93 (0.4) | 20.41 (0.5) | 20.24 | 20.24 (0.02) | 20.23 (0.02) | 21.93 (0.5) | ||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -92.41629827 (0.04) | -92.25290031 (0.1) | -92.416 (0.04) | -92.25290031 | ||||||||
| Proper motion (declination) | [mas/yr] | -457.0772599 (0.03) | -457.0665753 (0.09) | -457.077 (0.03) | -457.0665753 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.16 | 16.16 | 16.26 | ||||||||||
| V magnitude | 15.80 | 15.70 | 15.70 | 15.80 | |||||||||
| R magnitude | 15.41 | 15.41 | 15.63 (0.08) | ||||||||||
| I magnitude | 15.17 | 15.17 | |||||||||||
| J magnitude | 14.89 | 14.89 | 14.80 (0.04) | ||||||||||
| H magnitude | 14.55 | 14.55 | 14.68 (0.08) | ||||||||||
| K magnitude | 14.46 | 14.46 | 14.69 (0.1) | ||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 15.59 (0.005) | 15.61 | 15.59 | 15.59 (0.003) | 15.61 | ||||||||
| BP magnitude | 15.78 (0.005) | 15.79 | 15.79 | ||||||||||
| RP magnitude | 15.15 (0.008) | 15.19 | 15.19 | ||||||||||
| Pan g magnitude | |||||||||||||
| Pan r magnitude | |||||||||||||
| Pan i magnitude | |||||||||||||
| Pan z magnitude | |||||||||||||
| Pan y magnitude | |||||||||||||
| 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.