All names: 2MASS J12393201+2108062, SDSS J123931.99+210806.2, V* IR Com, SDSS J123932.01+210806.2, 1RXS J123930.6+210815, SDSS J123931.99+210806.25, SV* SON 10932, RX J1239.5+2108, AAVSO 1234+21, [ZEH2003] RX J1239.5+2108 1, [DWS97] Com 1, Gaia DR2 3955313418148878080, TIC 347332400, Gaia DR3 3955313418148878080, SDSS J123932.00+210806.2, Gaia EDR3 3955313418148878080
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 39 31.99 (0.04) | 12 39 32.00 | 12 39 31.99 (0.06) | 12 39 32.02 (0.04) | ||||
| Declination | 21 08 06.25 (0.03) | 21 08 06.27 | 21 08 06.25 (0.04) | 21 08 06.27 (0.03) | ||||
| Spectral type | DA+M | DA+M | ||||||
| Effective temperature | [K] | 9538.0 (56) | ||||||
| log(g) | [cgs] | 9.69 (0.05) | ||||||
| Mass | [M☉] | 1.361 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 4.60 (0.06) | 4.53 (0.08) | 4.60 (0.06) | ||||
| Distance | [pc] | 217.38 (3) | 220.67 (4) | 217.39 (3) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -29.79784325 (0.06) | -29.479 (0.1) | -29.798 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -0.7237174 (0.05) | -0.66 (0.06) | -0.724 (0.05) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 15.03 (0.04) | |||||||
| H magnitude | 14.61 (0.05) | |||||||
| K magnitude | 14.58 (0.09) | |||||||
| u magnitude | 18.24 (0.01) | 18.24 (0.03) | 18.23 (0.01) | |||||
| g magnitude | 18.32 (0.007) | 18.32 (0.03) | 18.33 (0.007) | |||||
| r magnitude | 18.41 (0.007) | 18.41 (0.01) | 18.41 (0.007) | |||||
| i magnitude | 18.04 (0.008) | 18.03 (0.02) | 18.05 (0.008) | |||||
| z magnitude | 17.26 (0.01) | 17.26 (0.02) | 17.25 (0.01) | |||||
| G magnitude | 16.66 (0.05) | 16.72 | 16.66 (0.02) | |||||
| BP magnitude | 16.80 (0.05) | 16.78 | ||||||
| RP magnitude | 16.12 (0.04) | 16.14 | ||||||
| Pan g magnitude | 18.57 (0.02) | |||||||
| Pan r magnitude | 18.66 (0.009) | |||||||
| Pan i magnitude | 16.72 (0.07) | |||||||
| Pan z magnitude | 17.45 (0.02) | |||||||
| Pan y magnitude | 17.18 (0.04) | |||||||
| E(B-V) | 0.019 | |||||||
* 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.