All names: 2MASS J21061562+3419146, UCAC2 43870275, Gaia EDR3 1867119388493088384, Gaia DR3 1867119354139385984, KPD 2104+3407, KPD2104+3407, Gaia DR2 1867119354139385984, TIC 163485661, LAMOST J210615.61+341914.6, PSO J316.5650+34.3207, UCAC4 622-111360
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 06 10.02 (0.4) | 21 06 15.67 | 21 06 15.63 (0.02) | ||
| Declination | 34 19 05.96 (0.5) | 34 19 14.72 | 34 19 14.63 (0.03) | ||
| Spectral type | sdO | sdOBHe | |||
| 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] | 1.05 (0.6) | 0.49 (0.05) | 0.42 (0.03) | |
| Distance | [pc] | 954.56 (537) | 2039.15 (193) | 2357.38 (191) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -3.782 (0.5) | -7.829 (0.06) | -7.654 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.936 (0.5) | -2.163 (0.07) | -2.002 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.81 | ||||
| V magnitude | 15.95 | ||||
| R magnitude | 16.05 (0.3) | ||||
| I magnitude | |||||
| J magnitude | 16.36 (0.09) | 16.36 (0.09) | |||
| H magnitude | 16.40 (0.2) | 16.40 (0.2) | |||
| K magnitude | 15.98 | ||||
| u magnitude | |||||
| g magnitude | 15.78 (0.003) | ||||
| r magnitude | 16.10 (0.002) | ||||
| i magnitude | 16.40 (0.005) | ||||
| z magnitude | 16.63 (0.002) | ||||
| G magnitude | 20.42 (0.006) | 15.91 (0.001) | 15.89 (0.003) | ||
| BP magnitude | 20.86 (0.2) | 15.73 (0.009) | |||
| RP magnitude | 20.06 (0.1) | 16.04 (0.006) | |||
| Pan g magnitude | 15.78 (0.003) | ||||
| Pan r magnitude | 16.10 (0.002) | ||||
| Pan i magnitude | 16.39 (0.005) | ||||
| Pan z magnitude | 16.63 (0.002) | ||||
| Pan y magnitude | 16.79 (0.003) | ||||
| E(B-V) | 0.173 | ||||
* 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.