All names: TIC 21664200, SDSS J170213.24+322954.2, SDSS J170213.24+322954.1, LAMOST J170213.26+322953.9, SDSS J170213.26+322954.1, LAMOST J170213.25+322954.1, 2MASS J17021325+3229542, Gaia DR2 1313538545446290688, V* V1239 Her, SDSS J170213.25+322954.2, SDSS J170213.25+322954.1, Gaia EDR3 1313539262705270144, Gaia DR3 1313538545446290688
| Parameter | Unit | Gaia EDR3 | Guo et al. 2015 | Simbad |
|---|---|---|---|---|
| Right ascension | 17 02 09.88 (0.3) | 17 02 13.25 (0.07) | ||
| Declination | 32 30 20.50 (0.4) | 32 29 54.16 (0.06) | ||
| Spectral type | CV | M1.5e | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.84 (0.5) | 3.31 (0.08) | |
| Distance | [pc] | 1192.32 (664) | 302.44 (7) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.293 (0.5) | 20.969 (0.1) | |
| Proper motion (declination) | [mas/yr] | -4.414 (0.5) | -18.372 (0.1) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.63 (0.05) | |||
| H magnitude | 15.05 (0.06) | |||
| K magnitude | 14.81 (0.09) | |||
| u magnitude | 18.16 (0.01) | |||
| g magnitude | 17.91 (0.006) | |||
| r magnitude | 17.82 (0.006) | |||
| i magnitude | 17.39 (0.006) | |||
| z magnitude | 17.00 (0.01) | |||
| G magnitude | 20.11 (0.005) | 17.79 (0.02) | ||
| BP magnitude | 20.23 (0.06) | |||
| RP magnitude | 19.62 (0.06) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | ||||
* 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.