All names: CLASS J123143.5769+284749.753, FIRST J123143.5+284749, 7C 122915.40+290414.00, 1WGA J1231.7+2848, [VV2010] J123143.5+284750, RX J1231.6+2847, [ZEH2003] RX J1231.7+2847 1, WN B1229.1+2905B, KUV 12292+2904, [VV2003] J123143.5+284750, 3HSP J123143.6+284749, RGB J1231+287, Gaia EDR3 4010804292533346176, Gaia DR3 4010804292533346176, 9Y-MST J1231+2847, 3FGL J1231.7+2847, FBQS J1231+2847, [MML2015] 5BZB J1231+2847, 3FHL J1231.7+2847, [VV2000b] J123143.6+284749, [VV2006] J123143.5+284750, [CRJ2004] J1231.7+2847, ATO J187.9315+28.7971, B2 1229+29, 1FGL J1231.6+2850, TXS 1229+290, 4FGL J1231.7+2847, FL8Y J1231.7+2847, BWE 1229+2904, SDSS J123143.57+284749.7, MITG J123143+2848, WD 1229+290, Gaia DR2 4010804292533346176, WISEA J123143.56+284749.7, 2MASS J12314357+2847497, [BSF97] J123143.57+284749.7, 1RXS J123144.7+284754, WISE J123143.56+284749.7, WISE J123143.57+284749.8, 1FHL J1231.8+2849, RGB J1231.7+2847, [MGL2009] BZB J1231+2847, GB6 B1229+2904, 2FHL J1231.7+2848, 87GB 122914.9+290436, 2FGL J1231.7+2848, WB 1229+2904, TIC 393834289, CRATES J123144+284803, NVSS J123143+284751, RX J1231.7+2847, [VV98b] J123143.7+284750
| Parameter | Unit | Gaia EDR3 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|
| Right ascension | 12 31 43.57 (0.06) | 12 31 43.57 (0.06) | 12 31 43.85 | |
| Declination | 28 47 49.77 (0.03) | 28 47 49.77 (0.03) | 28 47 44.88 | |
| Spectral type | DC | |||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | -0.24 (0.06) | ||
| Distance | [pc] | |||
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.391677622 (0.07) | 0.392 (0.07) | |
| Proper motion (declination) | [mas/yr] | -0.130392819 (0.06) | -0.13 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 17.90 | |||
| V magnitude | 17.38 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.74 (0.08) | |||
| H magnitude | 15.13 (0.08) | |||
| K magnitude | 14.41 (0.07) | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.74 (0.02) | 16.74 (0.007) | ||
| BP magnitude | 16.96 (0.02) | |||
| RP magnitude | 16.13 (0.02) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | ||||
* 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.