All names: LSPM J0931+1312, SDSS J093140.63+131210.1, SDSS J093140.64+131210.1, USNO-B1.0 1032-00195156, NLTT 21978, Gaia DR2 617329255911052416, LP 487-59, WDJ093140.73+131210.03, Gaia EDR3 617329255911052416, Gaia DR3 617329255911052416
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 31 40.50 (0.2) | 09 31 40.51 | 09 31 40.50 | 09 31 40.73 (0.2) | 09 31 40.51 | |||
| Declination | 13 12 10.40 (0.2) | 13 12 10.39 | 13 12 10.40 | 13 12 10.03 (0.2) | 13 12 10.39 | |||
| Spectral type | DA: | DA | ||||||
| Effective temperature | [K] | 5373.0 (51) | ||||||
| log(g) | [cgs] | 7.91 (0.03) | ||||||
| Mass | [M☉] | 0.531 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 16.43 (0.2) | 15.91 (0.3) | 16.43 | 16.43 (0.2) | 15.91 (0.3) | ||
| Distance | [pc] | 60.86 (0.7) | 62.87 (1) | 60.86 | 60.86 (0.7) | 62.87 (1) | ||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -206.3456154 (0.2) | -206.0559065 (0.4) | -206.346 (0.2) | -206.0559065 | |||
| Proper motion (declination) | [mas/yr] | 23.24880231 (0.2) | 23.36673479 (0.5) | 23.249 (0.2) | 23.36673479 | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 18.90 | |||||||
| V magnitude | ||||||||
| R magnitude | 18.00 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.21 (0.05) | 20.21 (0.05) | ||||||
| g magnitude | 18.86 (0.008) | 18.86 (0.008) | ||||||
| r magnitude | 18.31 (0.007) | 18.31 (0.007) | ||||||
| i magnitude | 18.08 (0.008) | 18.08 (0.008) | ||||||
| z magnitude | 18.00 (0.02) | 18.00 (0.02) | ||||||
| G magnitude | 18.32 (0.02) | 18.35 | 18.32 | 18.32 (0.003) | 18.35 | |||
| BP magnitude | 18.77 (0.02) | 18.86 | 18.86 | |||||
| RP magnitude | 17.76 (0.01) | 17.76 | 17.76 | |||||
| Pan g magnitude | 18.80 (0.01) | |||||||
| Pan r magnitude | 18.30 (0.005) | |||||||
| Pan i magnitude | 18.08 (0.006) | |||||||
| Pan z magnitude | 18.04 (0.009) | |||||||
| Pan y magnitude | 17.99 (0.01) | |||||||
| E(B-V) | 0.002 | |||||||
* 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.