All names: LAMOST J071856.25+102638.3, 2MASS J07185625+1026383, LAMOSTJ071856.25+102638.3, Gaia DR3 3156573539750882944, GALEX J071856.2+102637, Gaia DR2 3156573539750882944, Gaia EDR3 3156573539750882944, UCAC4 503-041158
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 18 56.25 (0.06) | 07 18 56.25 | 07 18 56.25 (0.06) | ||
| Declination | 10 26 38.30 (0.04) | 10 26 38.36 | 10 26 38.35 (0.04) | ||
| Spectral type | He-sdOB | sdOBHe | |||
| Effective temperature | [K] | 34261.0 (191) | |||
| log(g) | [cgs] | 6.03 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.87 (0.06) | 0.93 (0.1) | 0.87 (0.06) | |
| Distance | [pc] | 1144.82 (81) | 1078.87 (132) | 1144.82 (81) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.213 (0.07) | 0.666 (0.2) | 1.213 (0.07) | |
| Proper motion (declination) | [mas/yr] | -3.211 (0.05) | -3.33 (0.1) | -3.211 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.69 (0.01) | ||||
| V magnitude | 15.80 (0.05) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.22 (0.1) | 16.22 (0.1) | |||
| H magnitude | 16.11 | ||||
| K magnitude | 16.50 | ||||
| u magnitude | |||||
| g magnitude | 15.61 (0.07) | ||||
| r magnitude | 16.07 (0.01) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.77 (0.003) | 15.79 (0.001) | 15.77 (0.003) | ||
| BP magnitude | 15.65 (0.004) | 15.58 (0.02) | |||
| RP magnitude | 15.99 (0.008) | 15.99 (0.007) | |||
| Pan g magnitude | 15.61 (0.0006) | ||||
| Pan r magnitude | 16.02 (0.006) | ||||
| Pan i magnitude | 16.33 (0.004) | ||||
| Pan z magnitude | 16.59 (0.002) | ||||
| Pan y magnitude | 16.77 (0.004) | ||||
| E(B-V) | 0.041 | ||||
* 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.