All names: 2MASS J07021520+1217533, SDSS J070215.20+121753.4, TIC 457094678, Gaia DR3 3160836861727862400, GALEX J070215.1+121753, LAMOST J070215.20+121753.3, SDSSJ070215.20+121753.4, Gaia DR2 3160836861727862400
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 02 15.21 | 07 02 15.21 (0.04) | ||
| Declination | 12 17 53.46 | 12 17 53.46 (0.04) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 26586.0 (230) | ||
| log(g) | [cgs] | 5.30 (0.03) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.78 (0.1) | 0.90 (0.04) | |
| Distance | [pc] | 1275.51 (158) | 1105.09 (51) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.457 (0.2) | 2.337 (0.04) | |
| Proper motion (declination) | [mas/yr] | -7.616 (0.1) | -7.535 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.16 (0.04) | 15.16 (0.04) | ||
| H magnitude | 15.18 (0.08) | 15.18 (0.08) | ||
| K magnitude | 15.31 (0.2) | 15.31 (0.2) | ||
| u magnitude | 14.47 (0.004) | 14.48 (0.01) | ||
| g magnitude | 14.50 (0.003) | 14.53 (0.006) | ||
| r magnitude | 14.90 (0.004) | 14.91 (0.005) | ||
| i magnitude | 15.21 (0.004) | 15.23 (0.006) | ||
| z magnitude | 15.50 (0.006) | 15.49 (0.01) | ||
| G magnitude | 14.74 (0.0009) | 14.72 (0.003) | ||
| BP magnitude | 14.58 (0.01) | |||
| RP magnitude | 14.91 (0.003) | |||
| Pan g magnitude | 14.60 (0.003) | |||
| Pan r magnitude | 14.95 (0.004) | |||
| Pan i magnitude | 15.26 (0.005) | |||
| Pan z magnitude | 15.50 (0.003) | |||
| Pan y magnitude | 15.65 (0.006) | |||
| E(B-V) | 0.073 | |||
* 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.