All names: SDSS J092355.80+213051.8, GALEX J092355.8+213052, 2MASS J09235581+2130518, Gaia EDR3 637745193973843840, Gaia DR3 637745193973843840, TIC 414967365, Gaia DR2 637745193973843840, WD 0921+217
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 23 55.79 (0.4) | 09 23 55.80 | 09 23 55.79 (0.6) | 09 23 55.80 | 09 23 55.80 (0.4) | 09 23 55.54 | |||
| Declination | 21 30 51.81 (0.3) | 21 30 51.83 | 21 30 51.81 (0.5) | 21 30 51.80 | 21 30 51.74 (0.3) | 21 30 47.16 | |||
| Spectral type | WD+M | D+M | WD M | ||||||
| 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] | 1.87 (0.5) | 3.21 (0.7) | 1.87 (0.5) | |||||
| Distance | [pc] | 533.86 (148) | 311.32 (64) | 533.87 (148) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -9.406937915 (0.6) | -8.163416656 (1) | -9.407 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | 4.499533473 (0.4) | 2.984669823 (0.8) | 4.5 (0.4) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.89 (0.2) | ||||||||
| H magnitude | 15.97 (0.2) | ||||||||
| K magnitude | 15.70 (0.2) | ||||||||
| u magnitude | 20.61 (0.05) | 20.50 | 20.54 (0.06) | 20.50 | |||||
| g magnitude | 20.44 (0.02) | 20.45 | 20.46 (0.02) | 20.45 | |||||
| r magnitude | 19.88 (0.02) | 19.90 | 19.92 (0.02) | 19.90 | |||||
| i magnitude | 18.90 (0.01) | 18.90 | 18.91 (0.01) | 18.90 | |||||
| z magnitude | 18.25 (0.02) | 18.26 | 18.27 (0.03) | 18.26 | |||||
| G magnitude | 19.44 (0.07) | 19.49 | 19.44 (0.004) | ||||||
| BP magnitude | 20.38 (0.07) | 20.27 | |||||||
| RP magnitude | 18.48 (0.02) | 18.51 | |||||||
| Pan g magnitude | 20.38 (0.02) | ||||||||
| Pan r magnitude | 19.91 (0.006) | ||||||||
| Pan i magnitude | 18.92 (0.008) | ||||||||
| Pan z magnitude | 18.39 (0.008) | ||||||||
| Pan y magnitude | 18.10 (0.01) | ||||||||
| E(B-V) | 0.034 | ||||||||
* 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.