All names: LTT 8148, WD 2034-53, USNO-B1.0 0369-01026486, WDJ203816.85-530425.34, NLTT 49557, WD 2034-532, EC 20345-5314, BPM 26944, GALEX J203816.7-530423, Gaia DR3 6471102606408911360, TIC 100603346, L 279-25, GSC 08790-00128, uvby98 600226944, Gaia DR2 6471102606408911360, L279-25, Gaia EDR3 6471102606408911360, 2MASS J20381684-5304253
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Bergeron et al. 2011 | Wegner et al. 1987 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 38 17.00 (0.04) | 20 38 16.99 (0.06) | 20 38 17.00 | 20 38 16.85 (0.04) | 20 38 16.99 | 20 38 13.06 | ||||
| Declination | -53 04 28.14 (0.04) | -53 04 28.05 (0.05) | -53 04 28.14 | -53 04 25.34 (0.04) | -53 04 28.05 | -53 05 27.96 | ||||
| Spectral type | DB | DB | DB | DB4 | ||||||
| Effective temperature | [K] | 17160.0 (406) | 16000.0 | 16476.0 (210) | ||||||
| log(g) | [cgs] | 8.48 (0.07) | 7.53 (0.01) | |||||||
| Mass | [M☉] | 0.9 (0.05) | 0.368 (0.008) | |||||||
| log(Luminosity) | [L☉] | -2.19 | ||||||||
| Cooling age | [Gyr] | 0.3090 | ||||||||
| log(H/He) | <-5.74 (0.6) | |||||||||
| log(C/He) | <-5.5 | |||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 16.11 (0.06) | 15.89 (0.1) | 16.11 | 16.11 (0.06) | 15.89 (0.1) | ||||
| Distance | [pc] | 62.06 (0.2) | 62.92 (0.4) | 35.00 | 62.06 | 62.06 (0.2) | 62.92 (0.4) | |||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 84.8548065 (0.05) | 85.06224267 (0.1) | 84.855 (0.05) | 85.06224267 | |||||
| Proper motion (declination) | [mas/yr] | -174.8684393 (0.05) | -174.9403894 (0.09) | -174.868 (0.05) | -174.9403894 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.27 | |||||||||
| V magnitude | 14.46 | 14.36 | ||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 14.75 (0.03) | |||||||||
| H magnitude | 14.72 (0.05) | |||||||||
| K magnitude | 14.87 (0.1) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 14.33 (0.001) | 14.35 | 14.33 | 14.33 (0.003) | 14.35 | |||||
| BP magnitude | 14.27 (0.001) | 14.22 | 14.22 | |||||||
| RP magnitude | 14.45 (0.001) | 14.45 | 14.45 | |||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.006 | |||||||||
* 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.