All names: WD 1809+284, EGGR 241, NLTT 46095, UBV M 43080, GALEX J181140.8+282939, GEN# +6.10060375, USNO-B1.0 1184-00289929, LSPM J1811+2829, WDJ181140.82+282939.19, Gaia EDR3 4589303951715807104, LP 334-51, WD 1809+28, GD 375, Gaia DR3 4589303951715807104, BPM 92960, TIC 313894558, 1SWASP J181140.81+282939.5, Gaia DR2 4589303951715807104, 2MASS J18114081+2829392
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 11 40.87 (0.02) | 18 11 40.87 (0.02) | 18 11 40.87 | 18 11 40.82 (0.02) | 18 11 40.87 | 18 11 40.56 | ||||||
| Declination | 28 29 36.42 (0.02) | 28 29 36.51 (0.03) | 28 29 36.42 | 28 29 39.19 (0.02) | 28 29 36.51 | 28 29 46.68 | ||||||
| Spectral type | DA | DA | DA2.7 | DA4 | ||||||||
| Effective temperature | [K] | 17048.0 | 19318.0 | 18610.0 (298) | 17335.0 (153) | |||||||
| log(g) | [cgs] | 7.84 | 8.09 | 7.99 (0.05) | 7.86 (0.008) | |||||||
| Mass | [M☉] | 0.533 | 0.646 | 0.61 (0.03) | 0.543 (0.006) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0961 | 0.0975 | |||||||||
| 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] | 13.69 (0.02) | 13.68 (0.04) | 13.69 | 13.69 (0.02) | 13.68 (0.04) | ||||||
| Distance | [pc] | 73.05 (0.1) | 73.11 (0.2) | 70.00 | 73.05 | 73.05 (0.1) | 73.11 (0.2) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 41.86654867 (0.02) | 41.77990449 (0.05) | 41.867 (0.02) | 41.77990449 | |||||||
| Proper motion (declination) | [mas/yr] | -172.8709589 (0.03) | -172.8210104 (0.06) | -172.871 (0.03) | -172.8210104 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.13 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 15.00 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.38 (0.06) | |||||||||||
| H magnitude | 15.57 (0.1) | |||||||||||
| K magnitude | 15.74 (0.2) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.16 (0.001) | 15.18 | 15.16 | 15.16 (0.003) | 15.18 | |||||||
| BP magnitude | 15.10 (0.001) | 15.08 | 15.08 | |||||||||
| RP magnitude | 15.32 (0.002) | 15.32 | 15.32 | |||||||||
| Pan g magnitude | 15.02 (0.003) | |||||||||||
| Pan r magnitude | 15.34 (0.002) | |||||||||||
| Pan i magnitude | 15.65 (0.003) | |||||||||||
| Pan z magnitude | 15.88 (0.001) | |||||||||||
| Pan y magnitude | 16.05 (0.003) | |||||||||||
| E(B-V) | 0.014 | |||||||||||
* 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.