All names: CSI-21-22270, GALEX J222938.5-205011, GSC2 S32303301945, 2XMM J222938.5-205014, GALEX J222938.5-205012, IRAS 22267-2102, PK 036-57, PN ARO 17, NAME Helix Nebula, GALEX J222938.5-205014, PKS 2226-211, IRAS X2226-210, GALEX J222938.5-205009, ESO 602-22, GCRV 14134, GALEX J222938.4-205011, PHL 287, GALEX J222938.3-205016, GALEX J222938.4-205014, [HBC92] 222654.7-210537, USNO 271, PLX 5437, GLEAM J222942-205017, GALEX J222938.4-205010, 2E 4615, PK 036-57 1, NVSS J222941-205025, GALEX J222938.5-205013, NGC 7293, WEB 19878, Gaia EDR3 6628874205642084224, WD 2226-210, GALEX J222938.6-205010, GALEX J222938.4-205015, GALEX J222938.3-205010, 2E 2226.9-2105, PKS J2229-2050, NAME HELICAL NEB, PN G036.1-57.1, GALEX J222938.7-205011, PLX 5437.00, GALEX J222938.3-205011, TIC 69813909, [RHK93] 18755, uvby98 610160287, Gaia DR3 6628874205642084224, GALEX J222938.6-205011, PN VV 275, 2MASS J22293854-2050136, PN VV' 563, GJ 9785, 2RXP J222938.8-205015, [LFO93] 2226-21, GALEX J222938.4-205013, GALEX J222938.6-205009, WISH B2226.9-2105, Gaia DR2 6628874205642084224, GALEX J222938.4-205012
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 29 38.59 (0.04) | 22 29 38.59 (0.07) | 22 29 38.55 (0.04) | 22 29 38.76 | ||||
| Declination | -20 50 13.80 (0.03) | -20 50 13.80 (0.06) | -20 50 13.75 (0.03) | -20 50 06.72 | ||||
| Spectral type | DA | DAO.5 | DAO | |||||
| Effective temperature | [K] | 94640.0 (3349) | ||||||
| log(g) | [cgs] | 7.62 (0.1) | ||||||
| Mass | [M☉] | 0.65 (0.03) | ||||||
| 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] | 5.01 (0.04) | 4.98 (0.08) | 5.01 (0.04) | 4.70 (0.7) | |||
| Distance | [pc] | 199.51 (2) | 200.97 (3) | 152.00 | 199.51 (2) | 212.77 (32) | ||
| Composition | H | |||||||
| Proper motion (right ascension) | [mas/yr] | 38.78960372 (0.05) | 38.86872906 (0.2) | 38.79 (0.05) | ||||
| Proper motion (declination) | [mas/yr] | -3.346567647 (0.04) | -3.418752638 (0.1) | -3.347 (0.04) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 13.16 | |||||||
| V magnitude | 13.52 | |||||||
| R magnitude | 13.69 | |||||||
| I magnitude | 13.90 | |||||||
| J magnitude | 14.33 (0.02) | |||||||
| H magnitude | 14.49 (0.04) | |||||||
| K magnitude | 14.55 (0.08) | |||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 13.46 (0.003) | 13.48 | 13.46 (0.003) | |||||
| BP magnitude | 13.26 (0.003) | 13.22 | ||||||
| RP magnitude | 13.85 (0.0009) | 13.85 | ||||||
| Pan g magnitude | 13.36 | |||||||
| Pan r magnitude | 13.82 (0.01) | |||||||
| Pan i magnitude | 14.21 (0.004) | |||||||
| Pan z magnitude | 14.51 (0.0009) | |||||||
| Pan y magnitude | 14.70 (0.005) | |||||||
| E(B-V) | 0.013 | |||||||
* 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.