All names: USNO-B1.0 0931-00227021, Gaia DR2 3848393505848193408, Gaia EDR3 3848393505848193408, Gaia DR3 3848393505848193408, LSPM J0957+0308, WDJ095719.41+030841.74, PSO J149.3311+03.1446
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 09 57 19.52 (0.3) | 09 57 19.52 | 09 57 19.41 (0.3) | |||
| Declination | 03 08 40.14 (0.2) | 03 08 40.19 | 03 08 41.73 (0.2) | |||
| Spectral type | CND | |||||
| 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] | 8.81 (0.4) | 9.73 (0.8) | 8.81 (0.4) | ||
| Distance | [pc] | 113.51 (5) | 102.72 (9) | 113.51 (5) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 105.0759026 (0.3) | 106.2956336 (0.7) | 105.076 (0.3) | ||
| Proper motion (declination) | [mas/yr] | -99.35431646 (0.3) | -100.427646 (0.8) | -99.354 (0.3) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 20.10 | |||||
| V magnitude | ||||||
| R magnitude | 19.40 | |||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | ||||||
| g magnitude | 19.34 (0.02) | |||||
| r magnitude | 19.10 (0.02) | |||||
| i magnitude | 18.98 (0.02) | |||||
| z magnitude | 19.03 (0.02) | |||||
| G magnitude | 19.12 (0.06) | 19.15 | 19.12 (0.004) | |||
| BP magnitude | 19.42 (0.06) | 19.29 | ||||
| RP magnitude | 18.82 (0.07) | 18.66 | ||||
| Pan g magnitude | 19.37 (0.01) | |||||
| Pan r magnitude | 19.12 (0.009) | |||||
| Pan i magnitude | 19.03 (0.008) | |||||
| Pan z magnitude | 19.06 (0.01) | |||||
| Pan y magnitude | 19.05 (0.03) | |||||
| E(B-V) | 0.005 | |||||
* 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.