All names: WD 1646+062, 2MASS J16490776+0608453, Gaia EDR3 4440942243572461824, TIC 264609687, Gaia DR3 4440942243572461824, USNO-B1.0 0961-00273911, Gaia DR2 4440942243572461824, PG 1646+062
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 49 07.77 (0.1) | 16 49 07.77 (0.2) | 16 49 07.77 | 16 49 07.78 (0.1) | 16 49 06.89 | |||||
| Declination | 06 08 44.75 (0.1) | 06 08 44.78 (0.2) | 06 08 44.75 | 06 08 45.61 (0.1) | 06 08 49.92 | |||||
| Spectral type | DA | DA | DA1.7 | DAS | ||||||
| Effective temperature | [K] | 29580.0 (466) | 29940.0 (457) | |||||||
| log(g) | [cgs] | 7.87 (0.06) | 7.98 (0.05) | |||||||
| Mass | [M☉] | 0.58 (0.03) | 0.64 (0.03) | |||||||
| log(Luminosity) | [L☉] | -0.88 | ||||||||
| Cooling age | [Gyr] | 0.0123 | ||||||||
| 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] | 6.32 (0.2) | 6.44 (0.3) | 6.32 | 6.32 (0.2) | |||||
| Distance | [pc] | 158.17 (4) | 155.25 (7) | 176.00 | 168.00 | 158.17 | 158.17 (4) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.875669803 (0.2) | -8.607654643 (0.4) | -8.876 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -53.43951472 (0.1) | -54.60721585 (0.4) | -53.44 (0.1) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | yes | |||||||||
| B magnitude | 15.84 | |||||||||
| V magnitude | 16.03 | |||||||||
| R magnitude | 15.90 | |||||||||
| I magnitude | ||||||||||
| J magnitude | 14.04 (0.03) | |||||||||
| H magnitude | 13.42 (0.03) | |||||||||
| K magnitude | 13.24 (0.04) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 15.78 (0.002) | 15.77 | 15.78 | 15.78 (0.003) | ||||||
| BP magnitude | 15.97 (0.002) | 15.93 | ||||||||
| RP magnitude | 15.25 (0.002) | 15.26 | ||||||||
| Pan g magnitude | 15.98 (0.004) | |||||||||
| Pan r magnitude | 16.06 (0.003) | |||||||||
| Pan i magnitude | 15.67 (0.002) | |||||||||
| Pan z magnitude | 15.35 (0.003) | |||||||||
| Pan y magnitude | 15.16 (0.006) | |||||||||
| E(B-V) | 0.040 | |||||||||
* 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.