All names: [HHD2009] SDSS J1020+0246, Gaia EDR3 3859622268347346816, SDSS J102032.07+024621.9, Gaia DR2 3859622268347346816, SDSS J102032.07+024621.8, [SGR2010] J1020+0246, 2MASS J10203207+0246221, Gaia DR3 3859622268347346816, WD 1017+030, TIC 345074300
| 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 | 10 20 32.07 (0.3) | 10 20 32.07 | 10 20 32.07 (0.3) | 10 20 32.07 | 10 20 32.07 (0.3) | 10 20 32.18 | |||
| Declination | 02 46 21.77 (0.2) | 02 46 21.90 | 02 46 21.78 (0.3) | 02 46 21.79 | 02 46 21.88 (0.2) | 02 46 17.04 | |||
| Spectral type | DA+M | DA+M0 | DA2.8 M | ||||||
| Effective temperature | [K] | 18756.0 (3549) | |||||||
| log(g) | [cgs] | 7.09 (0.8) | |||||||
| Mass | [M☉] | 0.28 (0.3) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | -0.38 (0.3) | -1.23 (0.4) | ||||||
| Distance | [pc] | 344.00 (64) | |||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.662318921 (0.2) | -2.650227757 (0.5) | -2.662 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -6.724747863 (0.2) | -7.316196306 (0.5) | -6.725 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.49 (0.1) | ||||||||
| H magnitude | |||||||||
| K magnitude | 15.58 (0.02) | ||||||||
| u magnitude | 20.34 (0.05) | 20.36 | 20.35 (0.06) | 20.36 | |||||
| g magnitude | 19.53 (0.01) | 19.56 | 19.54 (0.01) | 19.56 | |||||
| r magnitude | 18.55 (0.009) | 18.56 | 18.55 (0.009) | 18.56 | |||||
| i magnitude | 17.99 (0.009) | 18.01 | 18.00 (0.009) | 18.01 | |||||
| z magnitude | 17.59 (0.02) | 17.60 | 17.60 (0.02) | 17.60 | |||||
| G magnitude | 18.58 (0.07) | 18.58 | 18.58 (0.007) | ||||||
| BP magnitude | 19.27 (0.07) | 19.26 | |||||||
| RP magnitude | 17.68 (0.03) | 17.61 | |||||||
| Pan g magnitude | 19.45 (0.01) | ||||||||
| Pan r magnitude | 18.58 (0.01) | ||||||||
| Pan i magnitude | 18.00 (0.004) | ||||||||
| Pan z magnitude | 17.70 (0.005) | ||||||||
| Pan y magnitude | 17.53 (0.007) | ||||||||
| E(B-V) | 0.031 | ||||||||
* 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.