All names: SDSS J082823.57+210036.0, Gaia EDR3 663983630221797376, GALEX J082823.5+210036, Gaia DR2 663983630221797376, PTF1 J082823.58+210036.0, SDSS J082823.58+210036.0, WD 0825+211, Gaia DR3 663983630221797376
| 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 | 08 28 23.58 (0.3) | 08 28 23.57 | 08 28 23.58 (0.3) | 08 28 23.57 | 08 28 23.58 (0.3) | 08 28 23.40 | |||
| Declination | 21 00 35.99 (0.2) | 21 00 36.00 | 21 00 36.00 (0.2) | 21 00 36.00 | 21 00 36.02 (0.2) | 21 00 30.60 | |||
| Spectral type | DA:+M | DA+M | DA:1.8 M | ||||||
| Effective temperature | [K] | 27743.0 (4624) | |||||||
| log(g) | [cgs] | 9.50 (0.6) | |||||||
| Mass | [M☉] | 1.46 (0.3) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.45 (0.3) | 0.42 (0.4) | 0.45 (0.3) | |||||
| Distance | [pc] | 2245.48 (1645) | 2407.00 (2112) | 1368.00 (420) | 2245.68 (1646) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -3.206549426 (0.3) | -2.902239287 (0.7) | -3.207 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | -1.763576362 (0.2) | -1.737450876 (0.4) | -1.764 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.79 (0.07) | 20.78 | 20.80 (0.07) | 20.77 | |||||
| g magnitude | 20.13 (0.02) | 20.10 | 20.14 (0.02) | 20.10 | |||||
| r magnitude | 19.30 (0.01) | 19.24 | 19.30 (0.01) | 19.24 | |||||
| i magnitude | 18.68 (0.01) | 18.62 | 18.68 (0.01) | 18.62 | |||||
| z magnitude | 18.28 (0.03) | 18.25 | 18.29 (0.03) | 18.25 | |||||
| G magnitude | 19.18 (0.05) | 19.21 | 19.18 (0.004) | ||||||
| BP magnitude | 19.87 (0.05) | 19.82 | |||||||
| RP magnitude | 18.31 (0.03) | 18.26 | |||||||
| Pan g magnitude | 20.09 (0.01) | ||||||||
| Pan r magnitude | 19.29 (0.01) | ||||||||
| Pan i magnitude | 18.66 (0.009) | ||||||||
| Pan z magnitude | 18.35 (0.01) | ||||||||
| Pan y magnitude | 18.15 (0.008) | ||||||||
| E(B-V) | 0.032 | ||||||||
* 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.