All names: Gaia DR2 98381792193298176, Gaia EDR3 98381792193298176, SDSS J014637.16+221349.6, J0146+2213, GALEX J014637.1+221351, SDSS J014637.17+221349.6, Gaia DR3 98381792193298176, LSPM J0146+2213, WDJ014637.13+221348.98, USNO-B1.0 1122-00027131, WDJ014637.13+221348.97
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 46 37.27 (0.2) | 01 46 37.26 | 01 46 37.27 | 01 46 37.13 (0.2) | 01 46 37.26 | ||||||
| Declination | 22 13 50.98 (0.2) | 22 13 50.92 | 22 13 50.98 | 22 13 48.96 (0.2) | 22 13 50.92 | ||||||
| Spectral type | DC | DC | DA: | DC | DC | ||||||
| Effective temperature | [K] | 7046.0 (79) | 7011.0 (77) | 7763.0 (315) | |||||||
| log(g) | [cgs] | 8.30 (0.03) | 8.29 (0.04) | 8.56 (0.07) | |||||||
| Mass | [M☉] | 0.764 (0.03) | 0.757 (0.03) | 0.956 (0.06) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.8400 | |||||||||
| log(H/He) | -3.4 | -3.4 | |||||||||
| log(C/He) | |||||||||||
| 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] | 10.34 (0.3) | 10.35 (0.3) | 10.35 (0.3) | 10.34 | 10.34 (0.3) | 10.35 (0.3) | ||||
| Distance | [pc] | 96.71 (2) | 96.62 (3) | 96.58 (3) | 96.71 | 96.71 (2) | 96.58 (3) | ||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 120.0411496 (0.3) | 119.665228 (0.6) | 120.041 (0.3) | 119.665228 | ||||||
| Proper motion (declination) | [mas/yr] | 126.1430817 (0.2) | 125.2608664 (0.5) | 126.143 (0.2) | 125.2608664 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 18.90 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.40 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 18.33 (0.07) | ||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.48 (0.03) | 19.48 (0.03) | 19.48 (0.03) | ||||||||
| g magnitude | 19.00 (0.009) | 19.00 (0.009) | |||||||||
| r magnitude | 18.92 (0.01) | 18.92 (0.01) | |||||||||
| i magnitude | 18.94 (0.01) | 18.94 (0.01) | |||||||||
| z magnitude | 18.96 (0.04) | 18.96 (0.04) | |||||||||
| G magnitude | 18.86 (0.04) | 18.90 | 18.86 | 18.86 (0.004) | 18.90 | ||||||
| BP magnitude | 19.07 (0.04) | 18.97 | 18.97 | ||||||||
| RP magnitude | 18.66 (0.04) | 18.53 | 18.53 | ||||||||
| Pan g magnitude | 18.99 (0.01) | 18.99 (0.01) | |||||||||
| Pan r magnitude | 18.89 (0.006) | 18.89 (0.005) | |||||||||
| Pan i magnitude | 18.96 (0.007) | 18.96 (0.006) | |||||||||
| Pan z magnitude | 19.00 (0.01) | 19.00 (0.02) | |||||||||
| Pan y magnitude | 18.95 (0.03) | 18.95 (0.04) | |||||||||
| 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.