All names: [GS55] 149, EQ 1822.4+0050, WD 1822+008, GSC2 N020012315205, 2MASS J18245841+0051359, SH 2-68, Gaia DR3 4276328581046447104, LBN 030.63+06.37, LBN 93, Gaia DR2 4276328581046447104, [TP72] 53, LBN 96, TIC 169602040, PK 030+06 1, Gaia EDR3 4276328581046447104, PN G030.6+06.2, Sh 2-68, PN HDW 9, PN YM 15, LBN 031.47+05.12, DG 152, [B77] 13
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Werner & Herwig 2006 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 24 58.41 (0.05) | 18 24 58.41 (0.06) | 18 24 58.41 | 18 24 58.43 (0.05) | 18 24 58.80 | ||||
| Declination | 00 51 35.12 (0.05) | 00 51 35.15 (0.06) | 00 51 35.12 | 00 51 36.02 (0.05) | 00 51 37.44 | ||||
| Spectral type | DA | PG1159 | DC: | DAOZ.6 | DAOZ.7 | ||||
| Effective temperature | [K] | 84460.0 (7824) | 96000.0 | ||||||
| log(g) | [cgs] | 7.24 (0.2) | 6.80 | ||||||
| Mass | [M☉] | 0.54 (0.05) | 0.55 | ||||||
| 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] | 2.45 (0.06) | 2.48 (0.08) | 2.45 | 2.45 (0.06) | ||||
| Distance | [pc] | 408.85 (1e+01) | 403.76 (12) | 859.00 | 408.85 | 408.85 (1e+01) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -19.07848545 (0.06) | -19.05533478 (0.1) | -19.078 (0.06) | |||||
| Proper motion (declination) | [mas/yr] | -56.34380124 (0.05) | -56.05799822 (0.1) | -56.344 (0.05) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.00 | ||||||||
| V magnitude | 16.50 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.04 (0.1) | ||||||||
| H magnitude | 16.01 (0.2) | ||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 16.40 (0.003) | 16.43 | 16.40 | 16.40 (0.003) | |||||
| BP magnitude | 16.51 (0.003) | 16.47 | |||||||
| RP magnitude | 16.20 (0.004) | 16.20 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.160 | ||||||||
* 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.