All names: GJ 2023, EGM 810, Gaia DR2 5016897564123557248, GD 1363, GEN# +6.00247178, Gaia EDR3 5016897564123557248, Gaia DR3 5016897564123557248, WDJ012956.12-305509.83, TIC 70502867, MCT 0127-3110, WD 0127-311, 2MASS J01295612-3055098, GALEX J012956.1-305510, HE 0127-3110, BPM 47178
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Voss et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 29 56.11 (0.02) | 01 29 56.11 (0.03) | 01 29 56.13 | 01 29 56.11 | 01 29 56.12 (0.02) | 01 29 56.11 | 01 29 54.55 | ||||
| Declination | -30 55 11.89 (0.02) | -30 55 11.82 (0.03) | -30 55 00.09 | -30 55 11.89 | -30 55 09.83 (0.02) | -30 55 11.82 | -30 55 31.80 | ||||
| Spectral type | DB | DB | DB | DB | DAH3 | ||||||
| Effective temperature | [K] | 11259.0 (479) | 10910.0 (830) | 11002.0 | 11345.0 (66) | ||||||
| log(g) | [cgs] | 7.96 (0.4) | 8.06 (0.1) | 8.00 | 8.03 (0.007) | ||||||
| Mass | [M☉] | 0.563 (0.2) | 0.62 (0.1) | 0.601 (0.006) | |||||||
| log(Luminosity) | [L☉] | -2.73 (0.1) | |||||||||
| Cooling age | [Gyr] | 0.4537 | 0.5400 (0.2) | ||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| 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] | 17.92 (0.03) | 17.93 (0.05) | 19.15 (1) | 17.92 | 17.92 (0.03) | 17.93 (0.05) | ||||
| Distance | [pc] | 55.81 (0.1) | 55.00 | 55.76 (0.2) | 52.22 (3) | 55.81 | 55.81 (0.1) | 55.76 (0.2) | |||
| Composition | He | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.651025517 (0.02) | -8.758871787 (0.05) | -8.651 (0.02) | -8.758871787 | ||||||
| Proper motion (declination) | [mas/yr] | -128.8098429 (0.02) | -128.8032338 (0.04) | -128.81 (0.02) | -128.8032338 | ||||||
| Variability | |||||||||||
| Magnetic | yes | ||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.13 | ||||||||||
| V magnitude | 15.74 | 14.51 | 14.51 | ||||||||
| R magnitude | 15.70 | ||||||||||
| I magnitude | 15.66 | ||||||||||
| J magnitude | 15.73 (0.07) | 15.73 (0.07) | |||||||||
| H magnitude | 15.91 (0.2) | 15.91 (0.2) | |||||||||
| K magnitude | 15.68 | ||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 15.69 (0.001) | 15.71 | 15.69 | 15.69 (0.003) | 15.71 | ||||||
| BP magnitude | 15.69 (0.001) | 15.66 | 15.66 | ||||||||
| RP magnitude | 15.67 (0.002) | 15.68 | 15.68 | ||||||||
| 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.