All names: TON261, CSI+26-16445, EGGR 121, Ton 261, Gaia DR3 1307252843628956672, Gaia EDR3 1307252843628956672, SDSS J164634.49+263752.3, GEN# +6.10070261, UBV M 43131, LAMOST J164634.49+263752.3, FB 167, UBV 14222, SDSS J164634.49+263752.32, SDSS J164634.48+263752.3, TIC 236014985, Gaia DR2 1307252843628956672, GALEX J164634.5+263752, UCAC4 584-054136, 2MASS J16463446+2637518
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 46 34.48 (0.03) | 16 46 34.49 | 16 46 34.48 | 16 46 34.48 (0.03) | 16 46 34.48 (0.03) | ||||
| Declination | 26 37 52.27 (0.04) | 26 37 52.30 | 26 37 52.10 | 26 37 52.27 (0.04) | 26 37 52.28 (0.04) | ||||
| Spectral type | He-sdOB | He-sdB | sdBHe | ||||||
| Effective temperature | [K] | 39810.0 (490) | 40000.0 (5000) | ||||||
| log(g) | [cgs] | 6.27 (0.04) | 6.50 (0.5) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.49 (0.05) | 0.48 (0.05) | 0.48 (0.05) | 0.49 (0.05) | ||||
| Distance | [pc] | 2041.66 (193) | 2092.93 (226) | 2093.10 (226) | 2041.65 (193) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.934268576 (0.04) | 1.85 (0.08) | 1.849877265 (0.08) | 1.934 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -0.928220342 (0.05) | -1.022 (0.1) | -1.021629499 (0.1) | -0.928 (0.05) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.92 (0.03) | ||||||||
| V magnitude | 16.25 (0.04) | ||||||||
| R magnitude | 16.03 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.52 (0.2) | 16.52 (0.2) | |||||||
| H magnitude | 15.77 | ||||||||
| K magnitude | 15.42 | ||||||||
| u magnitude | 15.60 (0.005) | 15.60 (0.005) | 15.61 (0.02) | 15.61 (0.005) | |||||
| g magnitude | 15.87 (0.004) | 15.88 (0.004) | 15.96 (0.02) | 15.88 (0.004) | |||||
| r magnitude | 16.32 (0.005) | 16.32 (0.005) | 16.33 (0.02) | 16.32 (0.005) | |||||
| i magnitude | 16.65 (0.005) | 16.65 (0.005) | 16.64 (0.01) | 16.66 (0.005) | |||||
| z magnitude | 16.97 (0.01) | 16.97 (0.01) | 16.98 (0.02) | 16.97 (0.01) | |||||
| G magnitude | 16.12 (0.002) | 16.14 (0.001) | 16.14 | 16.12 (0.003) | |||||
| BP magnitude | 16.00 (0.002) | 15.93 (0.008) | 15.93 | ||||||
| RP magnitude | 16.35 (0.004) | 16.34 (0.005) | 16.34 | ||||||
| Pan g magnitude | 15.96 (0.003) | 15.96 (0.003) | |||||||
| Pan r magnitude | 16.34 (0.003) | 16.34 (0.003) | |||||||
| Pan i magnitude | 16.67 (0.002) | 16.67 (0.002) | |||||||
| Pan z magnitude | 16.94 (0.003) | 16.94 (0.003) | |||||||
| Pan y magnitude | 17.10 (0.006) | 17.10 (0.006) | |||||||
| E(B-V) | 0.029 | ||||||||
* 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.