All names: SDSS J025450.15+325440.9, Gaia EDR3 136470769060759808, Gaia DR3 136470769060759808, SDSS J025450.15+325440.95, ZTF J025450.14+325441.1, Gaia DR2 136470769060759808
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 54 50.15 (0.2) | 02 54 50.15 | 02 54 50.15 (0.3) | 02 54 50.15 (0.2) | ||||
| Declination | 32 54 41.01 (0.2) | 32 54 40.95 | 32 54 41.01 (0.2) | 32 54 41.02 (0.2) | ||||
| Spectral type | sdA | sdA | ||||||
| Effective temperature | [K] | 7927.0 (27) | ||||||
| log(g) | [cgs] | 5.56 (0.1) | ||||||
| Mass | [M☉] | 0.15053 (0.0002) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.44 (0.2) | 0.76 (0.3) | 0.44 (0.2) | ||||
| Distance | [pc] | 2251.99 (1023) | 1323.76 (528) | 2251.75 (1023) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 0.447062034 (0.2) | -0.094336712 (0.5) | 0.447 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | -0.216635148 (0.2) | -0.003403034 (0.4) | -0.217 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.26 (0.05) | 20.26 (0.1) | 20.26 (0.1) | |||||
| g magnitude | 18.96 (0.01) | 19.02 (0.2) | 19.02 (0.2) | |||||
| r magnitude | 18.80 (0.01) | 18.83 (0.2) | 18.83 (0.2) | |||||
| i magnitude | 18.76 (0.01) | 18.78 (0.3) | 18.78 (0.3) | |||||
| z magnitude | 18.79 (0.04) | 18.83 (0.3) | 18.83 (0.3) | |||||
| G magnitude | 18.72 (0.04) | 18.76 | 18.72 (0.006) | |||||
| BP magnitude | 18.87 (0.04) | 18.95 | ||||||
| RP magnitude | 18.45 (0.06) | 18.31 | ||||||
| Pan g magnitude | 18.99 (0.03) | |||||||
| Pan r magnitude | 18.78 (0.01) | |||||||
| Pan i magnitude | 18.70 (0.03) | |||||||
| Pan z magnitude | 18.75 (0.01) | |||||||
| Pan y magnitude | 18.62 (0.03) | |||||||
| E(B-V) | 0.104 | |||||||
* 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.