All names: UCAC4 050-011230, CNS5 3148, NLTT 31694, L 38-80, 2MASS J12445268-8009278, Gaia DR2 5784295623056963200, LFT 942, L 39-44, LHS 2621, DENIS J124453.3-800929, WDJ124452.69-800927.91, Gaia EDR3 5784295623056963200, TIC 357879716, LAWD 42, WD 1241-798, Gaia DR3 5784295623056963200
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Subasavage et al. 2008 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 44 50.17 (0.03) | 12 44 50.25 (0.04) | 12 44 52.65 | 12 44 52.56 | 12 44 52.70 | 12 44 50.17 | 12 44 52.69 (0.03) | 12 44 50.25 | 12 44 52.58 | ||||
| Declination | -80 09 22.23 (0.03) | -80 09 22.41 (0.03) | -10 51 00.08 | -80 09 25.20 | -80 09 27.80 | -80 09 22.23 | -80 09 27.91 (0.03) | -80 09 22.41 | -80 09 24.84 | ||||
| Spectral type | DC | DC | DC/DQ | DC/DQ | DC/DQ | DA | DC/DQ | DC/DQ | |||||
| Effective temperature | [K] | 5620.0 (31) | 5550.0 (150) | 9419.0 (242) | 9556.0 | 5618.0 (143) | 5959.0 (18) | ||||||
| log(g) | [cgs] | 8.03 (0.02) | 7.88 (0.08) | 7.73 (0) | 8.21 (0.006) | ||||||||
| Mass | [M☉] | 0.591 (0.01) | 0.5 (0.06) | 0.47 (0) | 0.717 (0.005) | ||||||||
| log(Luminosity) | [L☉] | -3.81 (0.07) | |||||||||||
| Cooling age | [Gyr] | 2.8400 (0.7) | 0.5500 | ||||||||||
| 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] | 46.79 (0.03) | 46.79 (0.03) | 46.78 (0.04) | 43.45 (2) | 46.79 | 46.79 (0.03) | 46.78 (0.04) | 45.20 | ||||
| Distance | [pc] | 21.37 (0.01) | 21.37 (0.01) | 21.38 (0.02) | 23.01 (1) | 22.60 (0.4) | 22.10 | 22.10 | 21.37 | 21.37 (0.01) | 21.38 (0.02) | 22.12 | |
| Composition | He | H | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -404.1707725 (0.04) | -404.1244931 (0.07) | -404.171 (0.04) | -404.1244931 | ||||||||
| Proper motion (declination) | [mas/yr] | 354.7029389 (0.04) | 354.8171418 (0.05) | 354.703 (0.04) | 354.8171418 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.70 (0.1) | ||||||||||||
| V magnitude | 16.18 | 16.18 | 16.23 (0.01) | ||||||||||
| R magnitude | 15.80 | 15.94 (0.2) | |||||||||||
| I magnitude | 15.45 | 15.50 (0.05) | |||||||||||
| J magnitude | 15.03 (0.05) | 15.03 (0.05) | 15.03 (0.05) | ||||||||||
| H magnitude | 14.83 (0.07) | 14.83 (0.07) | 14.83 (0.07) | ||||||||||
| K magnitude | 14.60 (0.1) | 14.60 (0.1) | 14.60 (0.1) | ||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 16.01 (0.003) | 16.02 | 16.01 | 16.01 (0.003) | 16.02 | ||||||||
| BP magnitude | 16.34 (0.003) | 16.35 | 16.35 | ||||||||||
| RP magnitude | 15.51 (0.002) | 15.51 | 15.51 | ||||||||||
| 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.