All names: PG 1643+144, Gaia DR2 4461698343042893568, SDSS J164539.15+141746.4, 1SWASP J164539.13+141746.3, Gaia DR3 4461698343042893568, GALEX J164539.2+141746, HS 1643+1423, 2MASS J16453913+1417462, USNO-B1.0 1042-00283714, TIC 279829689, WISEA J164539.16+141746.8, WISE J164539.16+141746.8, WD 1643+143, UCAC4 522-060225
| Parameter | Unit | Stilism | Gianninas et al. 2011 | Mukadam et al. 2004 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 16 45 39.14 (0.3) | 16 45 39.62 | ||||
| Declination | 14 17 46.19 (0.3) | 14 17 42.00 | ||||
| Spectral type | DA | DA2+dM | DA | |||
| Effective temperature | [K] | 28040.0 (468) | 25450.0 (260) | |||
| log(g) | [cgs] | 7.77 (0.06) | ||||
| Mass | [M☉] | 0.53 (0.03) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| log(C/H) | ||||||
| log(N/H) | ||||||
| log(O/H) | ||||||
| log(Na/H) | ||||||
| log(Mg/H) | ||||||
| log(Al/H) | ||||||
| log(Si/H) | ||||||
| log(P/H) | ||||||
| log(S/H) | ||||||
| log(Sc/H) | ||||||
| log(Ti/H) | ||||||
| log(Cr/H) | ||||||
| log(Mn/H) | ||||||
| log(Fe/H) | ||||||
| log(Ni/H) | ||||||
| Parallax | [mas] | 5.43 (0.4) | ||||
| Distance | [pc] | 133.00 | 184.08 (14) | |||
| Composition | H | |||||
| Proper motion (right ascension) | [mas/yr] | 39.19 (0.4) | ||||
| Proper motion (declination) | [mas/yr] | 60.466 (0.3) | ||||
| Variability | NOV | NOV | ||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 15.82 (0.05) | |||||
| V magnitude | 15.36 (0.08) | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 12.73 (0.02) | |||||
| H magnitude | 12.12 (0.03) | |||||
| K magnitude | 11.96 (0.02) | |||||
| u magnitude | 15.71 (0.004) | |||||
| g magnitude | 15.54 (0.003) | |||||
| r magnitude | 15.12 (0.003) | |||||
| i magnitude | 14.43 (0.003) | |||||
| z magnitude | 13.98 (0.003) | |||||
| G magnitude | 15.21 (0.004) | |||||
| BP magnitude | ||||||
| RP magnitude | ||||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| 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.