All names: PM J12280+3300, SDSS J122801.59+330035.6, SDSS J122801.59+330035.5, LP 266-58, USNO-B1.0 1230-00247371, 2MASS J12280160+3300366, WD 1225+332, NLTT 30811, LSPM J1228+3300
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 12 28 01.57 (0.2) | |
| Declination | 33 00 36.27 (0.09) | |
| 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] | 19.19 (0.2) |
| Distance | [pc] | 52.12 (0.5) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 38.777 (0.3) |
| Proper motion (declination) | [mas/yr] | -176.385 (0.2) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.60 | |
| V magnitude | ||
| R magnitude | 17.70 | |
| I magnitude | ||
| J magnitude | 16.70 (0.1) | |
| H magnitude | 16.16 (0.2) | |
| K magnitude | 16.01 (0.2) | |
| u magnitude | 20.73 (0.07) | |
| g magnitude | 18.89 (0.009) | |
| r magnitude | 17.98 (0.006) | |
| i magnitude | 17.63 (0.007) | |
| z magnitude | 17.48 (0.01) | |
| G magnitude | 18.03 (0.001) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.