All names: 2FHL J1231.7+2848, CRATES J123144+284803, SDSS J123143.57+284749.7, TXS 1229+290, [VV2010] J123143.5+284750, [MGL2009] BZB J1231+2847, GB6 B1229+2904, 3HSP J123143.6+284749, 1FGL J1231.6+2850, 3FGL J1231.7+2847, 9Y-MST J1231+2847, WISE J123143.57+284749.8, MITG J123143+2848, 2FGL J1231.7+2848, [CRJ2004] J1231.7+2847, ATO J187.9315+28.7971, Gaia EDR3 4010804292533346176, [MML2015] 5BZB J1231+2847, 1RXS J123144.7+284754, RX J1231.7+2847, RX J1231.6+2847, [VV2006] J123143.5+284750, FL8Y J1231.7+2847, WN B1229.1+2905B, 1WGA J1231.7+2848, 87GB 122914.9+290436, [VV98b] J123143.7+284750, FBQS J1231+2847, WD 1229+290, 3FHL J1231.7+2847, TIC 393834289, B2 1229+29, NVSS J123143+284751, [VV2000b] J123143.6+284749, 7C 122915.40+290414.00, [VV2003] J123143.5+284750, WISEA J123143.56+284749.7, [ZEH2003] RX J1231.7+2847 1, RGB J1231+287, WB 1229+2904, RGB J1231.7+2847, WISE J123143.56+284749.7, 4FGL J1231.7+2847, [BSF97] J123143.57+284749.7, Gaia DR3 4010804292533346176, Gaia DR2 4010804292533346176, 1FHL J1231.8+2849, BWE 1229+2904, 2MASS J12314357+2847497, FIRST J123143.5+284749, KUV 12292+2904, CLASS J123143.5769+284749.753
| 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.