All names: WD 2008-600, WDJ201231.78-595651.67, SCR J2012-5956, Gaia DR2 6443365570172526848, Gaia DR3 6443365570172526848, SCRJ 2012-5956, USNO-B1.0 0300-00785973, CNS5 5014, Gaia EDR3 6443365570172526848, TIC 201730948, 2MASS J20123174-5956512, SCR 2012-5956, LEHPM 2-5312
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Giammichele et al. 2012 | Subasavage et al. 2009 | Holberg et al. 2008 | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 12 32.51 (0.02) | 20 12 32.49 (0.03) | 20 12 31.68 | 20 12 31.75 | 20 12 31.75 | 20 12 32.51 | 20 12 31.78 (0.02) | 20 12 32.49 | 20 12 31.37 | ||||||
| Declination | -59 57 13.94 (0.03) | -59 57 13.24 (0.03) | -59 56 49.20 | -59 56 51.50 | -59 56 51.50 | -59 57 13.94 | -59 56 51.67 (0.03) | -59 57 13.24 | -59 56 47.76 | ||||||
| Spectral type | DC | DC | DC9.9 | DC | DC | DC | DA | DC9 | DA? | ||||||
| Effective temperature | [K] | 4905.0 (213) | 5080.0 | 4905.0 (213) | 5080.0 (220) | 5078.0 (221) | 5719.0 (16) | ||||||||
| log(g) | [cgs] | 7.77 (0.02) | 7.77 (0.02) | 7.89 (0.03) | 8.22 (0.006) | ||||||||||
| Mass | [M☉] | 0.44 (0.01) | 0.44 (0.01) | 0.51 (0.02) | 0.725 (0.005) | ||||||||||
| log(Luminosity) | [L☉] | -3.97 | -3.97 (0.02) | ||||||||||||
| Cooling age | [Gyr] | 3.2400 | 3.7600 | 4.5500 (0.3) | |||||||||||
| log(H/He) | -2.6 | ||||||||||||||
| log(C/He) | |||||||||||||||
| log(Ca/He) | |||||||||||||||
| log(Ca/H) | |||||||||||||||
| Parallax | [mas] | 60.80 (0.03) | 60.80 (0.03) | 60.85 (0.05) | 60.42 (0.9) | 60.42 (0.9) | 60.42 (0.9) | 58.48 (1) | 60.80 | 60.80 (0.03) | 60.85 (0.05) | 58.50 | |||
| Distance | [pc] | 16.45 (0.009) | 16.45 (0.008) | 16.43 (0.01) | 16.55 (0.2) | 16.55 | 16.60 (0.2) | 16.55 (0.2) | 17.10 | 16.45 | 16.45 (0.009) | 16.43 (0.01) | 17.09 | ||
| Composition | H+He | He | He | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 343.2629779 (0.03) | 343.3298237 (0.07) | 343.263 (0.03) | 343.3298237 | ||||||||||
| Proper motion (declination) | [mas/yr] | -1391.763602 (0.03) | -1391.795244 (0.07) | -1391.764 (0.03) | -1391.795244 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | 15.82 | 15.84 | |||||||||||||
| R magnitude | 15.40 | 15.47 (0.3) | |||||||||||||
| I magnitude | 14.99 | 14.99 | |||||||||||||
| J magnitude | 14.93 | 14.93 (0.05) | 14.93 (0.05) | 14.93 (0.04) | |||||||||||
| H magnitude | 15.23 | 15.23 (0.1) | 15.23 (0.1) | 15.23 (0.1) | |||||||||||
| K magnitude | 15.41 | 15.41 (0) | 15.41 | ||||||||||||
| u magnitude | |||||||||||||||
| g magnitude | |||||||||||||||
| r magnitude | |||||||||||||||
| i magnitude | |||||||||||||||
| z magnitude | |||||||||||||||
| G magnitude | 15.63 (0.003) | 15.65 | 15.63 | 15.63 (0.003) | 15.65 | ||||||||||
| BP magnitude | 16.00 (0.003) | 16.02 | 16.02 | ||||||||||||
| RP magnitude | 15.09 (0.002) | 15.10 | 15.10 | ||||||||||||
| Pan g magnitude | |||||||||||||||
| Pan r magnitude | |||||||||||||||
| Pan i magnitude | |||||||||||||||
| Pan z magnitude | |||||||||||||||
| Pan y magnitude | |||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||
* 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.