All names: SDSS J085218.18+173712.7, SDSS J085218.24+173712.7, WIRED J085218.17+173712.7, [HHD2009] SDSS J0852+1737, SDSS J085218.17+173712.7, Gaia DR3 611880630335163904, WD 0849+178, Gaia DR2 611880630335163904, Gaia EDR3 611880630335163904, 2MASS J08521817+1737130, TIC 46307550
| 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) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 52 18.17 (0.3) | 08 52 18.17 | 08 52 18.17 (0.3) | 08 52 18.17 | 08 52 18.19 (0.3) | 08 52 18.41 | 08 52 18.18 | |||
| Declination | 17 37 12.73 (0.1) | 17 37 12.72 | 17 37 12.73 (0.2) | 17 37 12.68 | 17 37 12.72 (0.1) | 17 37 10.20 | 17 37 12.71 | |||
| Spectral type | DA+M | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 15601.0 (819) | 8624.0 (96) | |||||||
| log(g) | [cgs] | 7.44 (0.2) | 7.00 (0.2) | |||||||
| Mass | [M☉] | 0.36 (0.08) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.96 (0.3) | 2.08 (0.4) | 1.96 (0.3) | ||||||
| Distance | [pc] | 509.44 (83) | 481.79 (101) | 1158.00 (400) | 509.45 (83) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -18.4474544 (0.4) | -18.96866805 (0.7) | -18.447 (0.4) | ||||||
| Proper motion (declination) | [mas/yr] | 0.666444134 (0.3) | 1.166161148 (0.4) | 0.666 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.21 (0.02) | |||||||||
| H magnitude | 16.70 (0.03) | |||||||||
| K magnitude | 16.36 (0.04) | |||||||||
| u magnitude | 19.90 (0.04) | 19.89 | 19.90 (0.04) | 19.88 | 19.90 (0.04) | |||||
| g magnitude | 19.46 (0.01) | 19.45 | 19.44 (0.01) | 19.44 | 19.46 (0.02) | |||||
| r magnitude | 19.49 (0.01) | 19.48 | 19.48 (0.01) | 19.47 | 19.49 (0.02) | |||||
| i magnitude | 19.06 (0.01) | 19.04 | 19.05 (0.01) | 19.03 | 19.05 (0.02) | |||||
| z magnitude | 18.52 (0.03) | 18.48 | 18.50 (0.03) | 18.47 | 18.50 (0.03) | |||||
| G magnitude | 19.16 (0.03) | 19.18 | 19.16 (0.004) | |||||||
| BP magnitude | 19.48 (0.03) | 19.42 | ||||||||
| RP magnitude | 18.63 (0.03) | 18.52 | ||||||||
| Pan g magnitude | 19.39 (0.02) | |||||||||
| Pan r magnitude | 19.43 (0.01) | |||||||||
| Pan i magnitude | 18.99 (0.008) | |||||||||
| Pan z magnitude | 18.59 (0.02) | |||||||||
| Pan y magnitude | 18.30 (0.04) | |||||||||
| E(B-V) | 0.027 | |||||||||
* 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.