All names: [HHD2009] SDSS J2342+1559, Gaia EDR3 2819835974754338432, 2MASS J23422567+1559304, SDSS J234225.67+155930.3, WD 2339+157, SDSS J234225.67+155930.5, TIC 434117806, SDSS J234225.67+155930.4, Gaia DR3 2819835974754338432, WIRED J234225.67+155930.3, Gaia DR2 2819835974754338432, [SGR2010] J2342+1559
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 42 25.65 (0.7) | 23 42 25.67 | 23 42 25.67 | 23 42 25.65 (0.7) | 23 42 25.67 | 23 42 25.20 | 23 42 25.67 | ||||
| Declination | 15 59 29.72 (0.5) | 15 59 30.48 | 15 59 30.30 | 15 59 29.72 (0.5) | 15 59 30.46 | 15 59 26.88 | 15 59 30.36 | ||||
| Spectral type | DA+M | DA | DA+M | DA+M | DA dM | DA+M | |||||
| Effective temperature | [K] | 13904.0 (2345) | 12760.0 (480) | 10120.0 (39) | 9050.0 (88) | ||||||
| log(g) | [cgs] | 8.24 (0.4) | 8.23 (0.09) | 7.98 (0.04) | 7.57 (0.2) | ||||||
| Mass | [M☉] | 0.76 (0.2) | 0.75 (0.06) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.4898 | |||||||||
| 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] | ||||||||||
| Distance | [pc] | 166.00 (9) | |||||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -31.0 (3) | -30.3 | ||||||||
| Proper motion (declination) | [mas/yr] | -47.0 (3) | -46.6 | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.44 (0.005) | ||||||||||
| H magnitude | 14.99 (0.007) | ||||||||||
| K magnitude | 14.71 (0.009) | ||||||||||
| u magnitude | 18.61 (0.02) | 18.64 | 18.62 (0.02) | 18.64 (0.02) | 18.64 | 18.64 (0.02) | |||||
| g magnitude | 18.17 (0.007) | 18.19 | 18.17 (0.007) | 18.19 (0.02) | 18.19 | 18.19 (0.02) | |||||
| r magnitude | 18.16 (0.007) | 18.16 | 18.16 (0.007) | 18.16 (0.01) | 18.16 | 18.16 (0.01) | |||||
| i magnitude | 17.52 (0.007) | 17.52 | 17.52 (0.007) | 17.52 (0.01) | 17.52 | 17.53 (0.02) | |||||
| z magnitude | 16.85 (0.01) | 16.86 | 16.86 (0.01) | 16.86 (0.02) | 16.86 | 16.85 (0.02) | |||||
| G magnitude | 17.94 (0.02) | 17.94 (0.009) | |||||||||
| BP magnitude | 18.23 (0.02) | ||||||||||
| RP magnitude | 17.04 (0.007) | ||||||||||
| Pan g magnitude | 18.16 (0.005) | ||||||||||
| Pan r magnitude | 18.18 (0.008) | ||||||||||
| Pan i magnitude | 17.52 (0.006) | ||||||||||
| Pan z magnitude | 16.97 (0.005) | ||||||||||
| Pan y magnitude | 16.65 (0.007) | ||||||||||
| 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.