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