All names: WISEA J231221.59+010126.6, [HHD2009] SDSS J2312+0101, WD 2309+007, SDSS J231221.60+010127.0, Gaia EDR3 2657434946235069440, SDSS J231221.59+010127.0, SDSS J231221.61+010127.0, WD 2309-012, LAMOST J231221.61+010127.0, SDSS J231221.60-010127.0, WISE J231221.59+010126.8, [SGR2010] J2312+0101, TIC 262582728, Gaia DR2 2657434946235069440, 2MASS J23122161+0101270
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 12 21.59 (0.2) | 23 12 21.61 | 23 12 21.59 (0.3) | 23 12 21.59 | 23 12 21.61 | 23 12 21.61 | 23 12 20.54 | 23 12 21.60 | |||
| Declination | 01 01 26.48 (0.2) | 01 01 27.03 | 01 01 26.50 (0.3) | 01 01 27.01 | 01 01 27.03 | 01 01 27.07 | 01 01 25.68 | 01 01 27.03 | |||
| Spectral type | DB+M | DB+M3 | DB+M | DB+M | DB+M | ||||||
| Effective temperature | [K] | 14850.0 (83) | 6300.0 (2) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 8.99 (0.01) | 8.95 (0.05) | 10.00 (0.003) | |||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.10 (0.2) | 3.25 (0.4) | ||||||||
| Distance | [pc] | 476.78 (57) | 307.34 (33) | ||||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.64851717 (0.3) | -15.83013676 (0.7) | -14.0 (3) | -12.9 | ||||||
| Proper motion (declination) | [mas/yr] | -24.82969847 (0.2) | -24.57393471 (0.5) | -30.0 (3) | -31.3 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.11 (0.04) | ||||||||||
| H magnitude | 14.54 (0.05) | ||||||||||
| K magnitude | 14.22 (0.06) | ||||||||||
| u magnitude | 18.92 (0.02) | 18.98 | 18.92 (0.02) | 18.98 (0.03) | 18.98 | 18.97 (0.03) | |||||
| g magnitude | 18.60 (0.008) | 18.68 | 18.60 (0.008) | 18.68 (0.02) | 18.67 | 18.67 (0.02) | |||||
| r magnitude | 18.03 (0.007) | 18.11 | 18.01 (0.007) | 18.11 (0.02) | 18.12 | 18.10 (0.02) | |||||
| i magnitude | 17.00 (0.005) | 17.04 | 16.98 (0.005) | 17.04 (0.02) | 17.05 | 17.03 (0.02) | |||||
| z magnitude | 16.34 (0.008) | 16.40 | 16.32 (0.009) | 16.40 (0.02) | 16.40 | 16.40 (0.02) | |||||
| G magnitude | 17.88 (0.02) | 17.83 | |||||||||
| BP magnitude | 18.46 (0.02) | 18.44 | |||||||||
| RP magnitude | 16.57 (0.007) | 16.59 | |||||||||
| Pan g magnitude | 18.65 (0.02) | ||||||||||
| Pan r magnitude | 18.19 (0.01) | ||||||||||
| Pan i magnitude | 17.06 (0.004) | ||||||||||
| Pan z magnitude | 16.50 (0.005) | ||||||||||
| Pan y magnitude | 16.24 (0.006) | ||||||||||
| E(B-V) | 0.051 | ||||||||||
* 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.