All names: USNO-B1.0 1080-00001682, Gaia EDR3 2773073470346643200, WDJ000622.94+180013.41, 0003+177, PHL 2635, LHS 6001, WD 0003+17, USNO-A2.0 1050-00035413, J0006+1800, G 131-19, Gaia DR2 2773073470346643200, LSPM J0006+1800, TIC 301745214, NLTT 221, EGGR 457, Gaia DR3 2773073470346643200, GALEX J000622.9+180011, WD 0003+177, 2MASS J00062295+1800133
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Coutu et al. 2019 | Leggett et al. 2018 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 06 23.25 (0.07) | 00 06 22.94 | 00 06 23.24 (0.09) | 00 06 23.25 | 00 06 22.94 (0.07) | 00 06 23.24 | 00 06 22.25 | |||||
| Declination | 18 00 08.25 (0.06) | 18 00 13.41 | 18 00 08.41 (0.08) | 18 00 08.25 | 18 00 13.41 (0.06) | 18 00 08.41 | 18 00 23.76 | |||||
| Spectral type | DQ | DQ | DQ6.7 | DQ | DQ6 | DQ6 | ||||||
| Effective temperature | [K] | 7405.0 (41) | 7422.0 (155) | 7468.0 (66) | 7380.0 (57) | |||||||
| log(g) | [cgs] | 7.87 (0.01) | 7.90 | 7.93 (0.04) | 7.90 (0.01) | |||||||
| Mass | [M☉] | 0.5 (0.009) | 0.5151 | 0.535 (0.03) | 0.517 (0.01) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.1900 | 1.1800 | 1.2130 (0.06) | ||||||||
| log(H/He) | ||||||||||||
| log(C/He) | -6.0 | -5.9826 (0.03) | ||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(N/He) | ||||||||||||
| log(O/He) | ||||||||||||
| log(Na/He) | ||||||||||||
| log(Mg/He) | ||||||||||||
| log(Al/He) | ||||||||||||
| log(Si/He) | ||||||||||||
| log(P/He) | ||||||||||||
| log(S/He) | ||||||||||||
| log(Cl/He) | ||||||||||||
| log(Sc/He) | ||||||||||||
| log(Ti/He) | ||||||||||||
| log(V/He) | ||||||||||||
| log(Cr/He) | ||||||||||||
| log(Mn/He) | ||||||||||||
| log(Fe/He) | ||||||||||||
| log(Co/He) | ||||||||||||
| log(Ni/He) | ||||||||||||
| log(Cu/He) | ||||||||||||
| log(Zn/He) | ||||||||||||
| log(Ga/He) | ||||||||||||
| log(Ge/He) | ||||||||||||
| log(Sr/He) | ||||||||||||
| Parallax | [mas] | 17.42 (0.08) | 17.26 (0.1) | 17.26 | 18.40 (1) | 17.26 (0.1) | 17.42 | 17.42 (0.08) | 17.26 (0.1) | |||
| Distance | [pc] | 57.39 (0.3) | 57.94 (0.4) | 57.94 (0.4) | 54.35 (3) | 57.94 (0.4) | 57.39 | 57.39 (0.3) | 57.94 (0.4) | |||
| Composition | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 278.2528335 (0.08) | 278.2274984 (0.2) | 278.253 (0.08) | 278.2274984 | |||||||
| Proper motion (declination) | [mas/yr] | -322.3520009 (0.08) | -322.4699494 (0.2) | -322.352 (0.08) | -322.4699494 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.70 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 16.60 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.61 (0.02) | 16.18 (0.1) | ||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.40 (0.01) | 17.40 (0.01) | ||||||||||
| g magnitude | 17.05 (0.004) | |||||||||||
| r magnitude | 16.98 (0.004) | |||||||||||
| i magnitude | 17.03 (0.005) | |||||||||||
| z magnitude | 17.12 (0.01) | |||||||||||
| G magnitude | 16.96 (0.0007) | 16.98 | 16.96 | 16.96 (0.003) | 16.98 | |||||||
| BP magnitude | 17.09 (0.006) | 17.05 | 17.05 | |||||||||
| RP magnitude | 16.75 (0.01) | 16.72 | 16.72 | |||||||||
| Pan g magnitude | 17.06 (0.007) | 17.04 (0.009) | ||||||||||
| Pan r magnitude | 16.98 (0.0008) | 17.00 (0.002) | ||||||||||
| Pan i magnitude | 17.05 (0.003) | 17.03 (0.007) | ||||||||||
| Pan z magnitude | 17.10 (0.009) | 17.14 (0.005) | ||||||||||
| Pan y magnitude | 17.18 (0.03) | 17.20 (0.02) | ||||||||||
| E(B-V) | 0.003 | |||||||||||
* 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.