All names: 2MASS J22303363-7515256, SSSPM J2231-7514B, ** SLN 93B, Gaia DR2 6357629089412187648, WISEA J223034.68-751543.7, NAME WD 2226-754B, SPMJ2231-7515, Gaia DR3 6357629089412187648, SSSPM J2231-7515, WD 2226-755, SCR J2230-7515, WDJ223033.53-751524.30, SSPM J2231-7515, WDS J22307-7514B, TIC 325341805, Gaia EDR3 6357629089412187648, CNS5 5560
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Giammichele et al. 2012 | Subasavage et al. 2009 | Holberg et al. 2008 | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 30 35.25 (0.03) | 22 30 35.20 (0.04) | 22 30 40.00 | 22 30 33.12 | 22 30 33.55 | 22 30 33.55 | 22 30 35.25 | 22 30 33.53 (0.03) | 22 30 35.20 | 22 30 33.46 | ||||||
| Declination | -75 15 53.55 (0.03) | -75 15 52.64 (0.04) | -75 13 05.03 | -75 15 18.00 | -75 15 24.20 | -75 15 24.20 | -75 15 53.55 | -75 15 24.30 (0.03) | -75 15 52.64 | -75 15 18.36 | ||||||
| Spectral type | DC | DC | DC | DC12.1 | DC | DC | DC | DC: | DC12 | DX14 | ||||||
| Effective temperature | [K] | 3911.0 (40) | 4200.0 (70) | 4211.0 (143) | 4177.0 | 4211.0 (143) | 4161.0 (111) | 4177.0 (112) | 4073.0 (21) | |||||||
| log(g) | [cgs] | 7.73 (0.03) | 7.89 (0.05) | 8.00 (0) | (0) | 7.89 (0.03) | 7.82 (0.01) | |||||||||
| Mass | [M☉] | 0.437 (0.01) | 0.51 (0.04) | 0.58 (0) | 0.58 (0) | 0.51 (0.01) | 0.474 (0.008) | |||||||||
| log(Luminosity) | [L☉] | -4.30 (0.04) | -4.35 | -4.31 (0.01) | ||||||||||||
| Cooling age | [Gyr] | 7.4100 (0.5) | 8.4500 | 8.4600 | 7.5600 (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] | 66.51 (0.04) | 66.51 (0.04) | 66.53 (0.05) | 65.27 (1) | 66.51 | 66.51 (0.04) | 66.53 (0.05) | ||||||||
| Distance | [pc] | 15.04 (0.009) | 15.04 (0.009) | 15.03 (0.01) | 15.32 (0.2) | 14.42 (0.4) | 14.00 | 14.40 (1) | 14.00 | 14.00 | 15.04 | 15.04 (0.009) | 15.03 (0.01) | |||
| Composition | H | H | H | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 409.513455 (0.04) | 409.5 (0.09) | 409.513 (0.04) | 409.5001858 | |||||||||||
| Proper motion (declination) | [mas/yr] | -1827.876727 (0.05) | -1827.902 (0.09) | -1827.877 (0.05) | -1827.902355 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | DDr | DDu | ||||||||||||||
| B magnitude | 18.14 | |||||||||||||||
| V magnitude | 16.87 | 16.90 | 16.88 | |||||||||||||
| R magnitude | 16.16 | 16.17 | 16.17 | |||||||||||||
| I magnitude | 15.51 | 15.51 | 15.51 | |||||||||||||
| J magnitude | 14.86 (0.04) | 14.86 | 14.86 (0.04) | 14.86 (0.04) | 14.86 (0.04) | |||||||||||
| H magnitude | 14.82 (0.06) | 14.83 | 14.82 (0.06) | 14.82 (0.06) | 14.82 (0.06) | |||||||||||
| K magnitude | 14.72 (0.1) | 14.72 | 14.72 (0.1) | 14.72 (0.1) | 14.72 (0.1) | |||||||||||
| u magnitude | ||||||||||||||||
| g magnitude | ||||||||||||||||
| r magnitude | ||||||||||||||||
| i magnitude | ||||||||||||||||
| z magnitude | ||||||||||||||||
| G magnitude | 16.44 (0.005) | 16.46 | 16.44 | 16.44 (0.003) | 16.46 | |||||||||||
| BP magnitude | 17.16 (0.005) | 17.19 | 17.19 | |||||||||||||
| RP magnitude | 15.63 (0.002) | 15.64 | 15.64 | |||||||||||||
| Pan g magnitude | ||||||||||||||||
| Pan r magnitude | ||||||||||||||||
| Pan i magnitude | ||||||||||||||||
| Pan z magnitude | ||||||||||||||||
| Pan y magnitude | ||||||||||||||||
| E(B-V) | 0.000 | |||||||||||||||
* 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.