All names: SDSSJ163702.78-011351.7, Gaia EDR3 4382362737947208960, SDSS J163702.78-011351.7, SDSS J163702.79-011351.8, SDSS J163702.79-011351.7, Gaia DR3 4382362737947208960, Gaia DR2 4382362737945829248, GALEX J163702.8-011351
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Harris et al. 2003 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 37 02.78 (0.08) | 16 37 02.79 | 16 37 02.78 | 16 37 02.78 (0.1) | 16 37 02.79 (0.08) | 16 37 02.79 | ||||
| Declination | -01 13 51.73 (0.04) | -01 13 51.72 | -01 13 51.70 | -01 13 51.73 (0.06) | -01 13 51.70 (0.04) | -01 13 51.73 | ||||
| Spectral type | He-sdO | sdO | sdOHe | SDO | ||||||
| Effective temperature | [K] | 46100.0 (700) | 12420.0 (58) | |||||||
| log(g) | [cgs] | 5.92 (0.2) | 7.50 (0.07) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | -0.03 (0.1) | 0.08 (0.1) | 0.08 (0.1) | 0.08 (0.1) | |||||
| Distance | [pc] | 12165.45 (20468) | 12159.79 (20448) | 12165.45 (20468) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.544378192 (0.1) | -4.207 (0.3) | -4.207011513 (0.3) | -4.544 (0.1) | |||||
| Proper motion (declination) | [mas/yr] | -1.620790683 (0.08) | -1.571 (0.1) | -1.570760125 (0.1) | -1.621 (0.08) | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 16.80 (0.006) | 16.80 (0.006) | 16.81 | 16.80 (0.006) | 16.80 (0.02) | |||||
| g magnitude | 17.09 (0.004) | 17.09 (0.004) | 17.12 | 17.09 (0.004) | 17.12 (0.01) | |||||
| r magnitude | 17.44 (0.005) | 17.44 (0.005) | 17.45 | 17.44 (0.005) | 17.45 (0.008) | |||||
| i magnitude | 17.70 (0.007) | 17.70 (0.007) | 17.69 | 17.70 (0.007) | 17.70 (0.02) | |||||
| z magnitude | 18.03 (0.02) | 18.03 (0.02) | 18.00 | 18.03 (0.02) | 18.00 (0.02) | |||||
| G magnitude | 17.28 (0.005) | 17.29 (0.001) | 17.29 | 17.28 (0.003) | ||||||
| BP magnitude | 17.18 (0.005) | 17.11 (0.01) | 17.12 | |||||||
| RP magnitude | 17.43 (0.01) | 17.42 (0.01) | 17.42 | |||||||
| Pan g magnitude | 17.17 (0.003) | 17.17 (0.003) | ||||||||
| Pan r magnitude | 17.47 (0.004) | 17.47 (0.004) | ||||||||
| Pan i magnitude | 17.75 (0.004) | 17.75 (0.004) | ||||||||
| Pan z magnitude | 17.98 (0.004) | 17.98 (0.004) | ||||||||
| Pan y magnitude | 18.13 (0.01) | 18.13 (0.01) | ||||||||
| E(B-V) | 0.133 | |||||||||
* 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.