All names: EUVE J1800+68.6, UCAC4 793-028257, RE J180005+683618, 2E 1800.4+6836, 1RXS J180009.9+683557, RE J180016+683545, 2EUVE J1800+68.5, FBS 1800+686, RX J1800.2+6836, 2RE J1800+683, RE J1800+68, Gaia DR3 2258413758380511488, FBS B 855, TIC 219099282, KUV 18004+6836, RE J1800+683, AP J18000961+6835522, GSC 04429-00334, GALEX J180009.7+683552, 2RE J180009+683614, [TSA98] J180009.89+683616.33, RX J1800.1+6835, Gaia DR2 2258413758380511488, EUVE J1800+68.5, 2E 3996, 2MASS J18000961+6835522, WD 1800+685, Gaia EDR3 2258413758380511488
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 00 09.49 (0.03) | 18 00 09.50 (0.05) | 18 00 09.49 | 18 00 09.62 (0.03) | 18 00 10.34 | |||
| Declination | 68 35 50.80 (0.03) | 68 35 50.85 (0.05) | 68 35 50.80 | 68 35 52.23 (0.03) | 68 35 55.32 | |||
| Spectral type | DA | DA | DA1.1 | DA1 | ||||
| Effective temperature | [K] | 45230.0 (789) | 57579.0 (3640) | |||||
| log(g) | [cgs] | 7.88 (0.06) | 7.96 (0.03) | |||||
| Mass | [M☉] | 0.63 (0.03) | 0.684 (0.02) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| 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] | 6.67 (0.03) | 6.65 (0.05) | 6.67 | 6.67 (0.03) | |||
| Distance | [pc] | 149.99 (0.7) | 150.45 (1) | 152.00 | 149.99 | 149.99 (0.7) | ||
| Composition | H | |||||||
| Proper motion (right ascension) | [mas/yr] | -42.85849409 (0.04) | -42.93717239 (0.1) | -42.858 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -88.88813931 (0.05) | -89.18405033 (0.1) | -88.888 (0.04) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 14.68 (0.1) | |||||||
| V magnitude | 14.69 (0.08) | |||||||
| R magnitude | 15.00 (0.1) | |||||||
| I magnitude | ||||||||
| J magnitude | 15.50 (0.06) | |||||||
| H magnitude | 15.93 (0.2) | |||||||
| K magnitude | ||||||||
| u magnitude | ||||||||
| g magnitude | 14.71 (0.08) | |||||||
| r magnitude | 14.97 (0.1) | |||||||
| i magnitude | 15.18 (0.01) | |||||||
| z magnitude | ||||||||
| G magnitude | 14.80 (0.002) | 14.82 | 14.80 | 14.80 (0.003) | ||||
| BP magnitude | 14.64 (0.002) | 14.58 | ||||||
| RP magnitude | 15.12 (0.002) | 15.11 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.015 | |||||||
* 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.