All names: WD 2240-017, LP 640-69, G 28-13, PLX 5500.01, NLTT 54650, UBV M 53506, CSI-01-22405, GEN# +9.80028013, Gaia DR2 2652784694950778624, 2MASS J22430475-0127532, WDJ224304.77-012753.46, USNO 273, Gaia EDR3 2652784694950778624, G28-13, WD 2240-01, WD2240-017, USNO-B1.0 0885-00607509, Gaia DR3 2652784694950778624, PHL 386, TIC 250327946, J2243-0127, GCRV 73443, UBV 19439, PB 5137, EGGR 154, GALEX J224304.6-012754, LTT 18575
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Koester 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 | 22 43 04.62 (0.05) | 22 43 04.62 (0.06) | 22 43 04.80 | 22 43 04.62 | 22 43 04.77 (0.05) | 22 43 04.62 | 22 43 05.40 | ||||||||
| Declination | -01 27 56.56 (0.04) | -01 27 56.46 (0.05) | -01 27 54.00 | -01 27 56.56 | -01 27 53.45 (0.04) | -01 27 56.46 | -01 27 39.60 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA5.4 | DA6 | ||||||||
| Effective temperature | [K] | 9126.0 (47) | 8935.0 | 9250.0 (133) | 9114.0 (10) | 9174.0 (15) | 9150.0 (520) | 9258.0 (100) | |||||||
| log(g) | [cgs] | 8.00 (0.008) | 7.95 | 8.26 (0.06) | 8.05 (0.01) | 8.10 (0.02) | 8.00 (0) | 8.02 (0.02) | |||||||
| Mass | [M☉] | 0.597 (0.007) | 0.567 | 0.76 (0.04) | 0.66 | 0.6 | 0.612 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -2.98 | |||||||||||||
| Cooling age | [Gyr] | 0.8000 | 0.7504 | 0.8100 | |||||||||||
| 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] | 18.21 (0.05) | 18.19 (0.07) | 18.19 (0.07) | 8.90 (6) | 18.21 | 18.21 (0.05) | 18.19 (0.07) | 9.00 (5) | ||||||
| Distance | [pc] | 54.91 (0.2) | 54.98 (0.2) | 54.97 (0.2) | 45.00 | 112.36 (72) | 54.91 | 54.91 (0.2) | 54.97 (0.2) | 111.11 (62) | |||||
| Composition | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -144.9128915 (0.06) | -144.8881368 (0.1) | -144.913 (0.06) | -144.8881368 | ||||||||||
| Proper motion (declination) | [mas/yr] | -194.1946288 (0.05) | -193.9693273 (0.09) | -194.195 (0.05) | -193.9693273 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 16.42 | 16.52 | |||||||||||||
| V magnitude | 16.17 | 16.17 | 16.22 | 16.21 | |||||||||||
| R magnitude | 16.11 | 16.10 | |||||||||||||
| I magnitude | 15.98 | ||||||||||||||
| J magnitude | 15.93 (0.008) | 15.97 (0.07) | |||||||||||||
| H magnitude | 15.86 (0.01) | 15.89 (0.1) | |||||||||||||
| K magnitude | 15.91 (0.03) | 15.79 (0.2) | |||||||||||||
| u magnitude | 16.67 (0.007) | 16.66 (0.007) | |||||||||||||
| g magnitude | 16.23 (0.004) | ||||||||||||||
| r magnitude | 16.23 (0.004) | ||||||||||||||
| i magnitude | 16.32 (0.005) | ||||||||||||||
| z magnitude | 16.44 (0.008) | ||||||||||||||
| G magnitude | 16.18 (0.005) | 16.20 | 16.18 | 16.18 (0.003) | 16.20 | ||||||||||
| BP magnitude | 16.26 (0.005) | 16.26 | 16.26 | ||||||||||||
| RP magnitude | 16.02 (0.005) | 16.02 | 16.02 | ||||||||||||
| Pan g magnitude | 16.23 (0.01) | 16.23 (0.01) | |||||||||||||
| Pan r magnitude | 16.24 (0.004) | 16.24 (0.004) | |||||||||||||
| Pan i magnitude | 16.35 (0.001) | 16.35 (0.001) | |||||||||||||
| Pan z magnitude | 16.46 (0.003) | 16.46 (0.003) | |||||||||||||
| Pan y magnitude | 16.55 (0.007) | 16.55 (0.008) | |||||||||||||
| 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.