All names: Gaia DR2 1332378466733219456, SDSS J162501.75+390926.4, SDSS J162501.74+390926.4, [ZEH2003] RX J1625.0+3909 3, RX J1625.0+3909, Antipin V43, 1RXS J162501.2+390924, USNO-A2.0 1275-08931436, Gaia DR3 1332378466733219456, Gaia EDR3 1332378466733219456, AAVSO 1621+39, SBC9 2430, 2MASS J16250181+3909258, V* V844 Her, SDSS J162501.74+390926.3, TIC 39950064, CRTS J162501.7+390926
| Parameter | Unit | Gaia EDR3 | Stilism | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|
| Right ascension | 16 25 01.75 (0.05) | 16 25 01.75 | 16 25 01.75 (0.05) | |||
| Declination | 39 09 26.34 (0.07) | 39 09 26.34 | 39 09 26.36 (0.07) | |||
| Spectral type | DQ | DQ | CV | |||
| 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] | 3.27 (0.06) | 3.27 | 3.27 (0.06) | ||
| Distance | [pc] | 306.18 (6) | 306.19 | 306.18 (6) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 5.179 (0.06) | 5.179 (0.06) | |||
| Proper motion (declination) | [mas/yr] | -1.269 (0.09) | -1.269 (0.09) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | 16.20 | |||||
| I magnitude | ||||||
| J magnitude | 16.76 (0.1) | |||||
| H magnitude | 16.28 (0.2) | |||||
| K magnitude | 16.08 (0.3) | |||||
| u magnitude | 17.08 (0.009) | |||||
| g magnitude | 17.18 (0.005) | |||||
| r magnitude | 17.09 (0.005) | |||||
| i magnitude | 16.99 (0.005) | |||||
| z magnitude | 16.83 (0.01) | |||||
| G magnitude | 17.44 (0.01) | 17.44 | 17.44 (0.01) | |||
| BP magnitude | 17.57 (0.04) | |||||
| RP magnitude | 17.13 (0.04) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.017 | |||||
* 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.