All names: [SGR2010] J1021+1744, 2MASS J10210225+1744399, WD 1018+179, SDSS J102102.25+174439.9, GALEX J102102.2+174438, Gaia DR3 623895200049917184, TIC 70655770, Gaia DR2 623895200049917184, Gaia EDR3 623895200049917184, CRTS J102102.2+174439, SDSS J102102.26+174440.0
| 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 | 10 21 02.25 (0.2) | 10 21 02.25 | 10 21 02.25 (0.3) | 10 21 02.26 | 10 21 02.26 (0.2) | 10 21 01.87 | 10 21 02.26 | |||
| Declination | 17 44 39.98 (0.2) | 17 44 39.97 | 17 44 39.98 (0.5) | 17 44 39.98 | 17 44 40.01 (0.2) | 17 44 34.44 | 17 44 39.99 | |||
| Spectral type | DA+M | DA+M4 | DA1.5+M4 | DA+M | ||||||
| Effective temperature | [K] | 32595.0 (928) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 8.70 (0.2) | 10.00 (0.003) | |||||||
| Mass | [M☉] | 1.06 (0.09) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.60 (0.2) | 2.28 (0.4) | 2.60 (0.2) | ||||||
| Distance | [pc] | 384.37 (29) | 437.85 (84) | 695.00 (102) | 384.38 (29) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -15.5451902 (0.2) | -15.97858894 (1) | -15.545 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -2.205303501 (0.2) | -1.884613466 (1) | -2.205 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | yes | WDMS | |||||||
| B magnitude | ||||||||||
| V magnitude | 18.52 | |||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.60 (0.07) | |||||||||
| H magnitude | 15.10 (0.1) | |||||||||
| K magnitude | 14.71 (0.1) | |||||||||
| u magnitude | 20.34 (0.05) | 20.35 | 20.36 (0.06) | 20.36 | 20.35 (0.06) | |||||
| g magnitude | 19.51 (0.01) | 19.51 | 19.52 (0.01) | 19.52 | 19.51 (0.02) | |||||
| r magnitude | 19.03 (0.01) | 19.01 | 19.03 (0.01) | 19.03 | 19.01 (0.02) | |||||
| i magnitude | 17.96 (0.008) | 17.97 | 17.96 (0.008) | 17.96 | 17.97 (0.02) | |||||
| z magnitude | 17.22 (0.01) | 17.22 | 17.22 (0.01) | 17.22 | 17.22 (0.02) | |||||
| G magnitude | 18.50 (0.07) | 18.53 | 18.50 (0.005) | |||||||
| BP magnitude | 19.52 (0.07) | 19.45 | ||||||||
| RP magnitude | 17.46 (0.02) | 17.47 | ||||||||
| Pan g magnitude | 19.51 (0.01) | |||||||||
| Pan r magnitude | 18.96 (0.02) | |||||||||
| Pan i magnitude | 17.94 (0.01) | |||||||||
| Pan z magnitude | 17.39 (0.02) | |||||||||
| Pan y magnitude | 17.04 (0.01) | |||||||||
| E(B-V) | 0.023 | |||||||||
* 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.