PG 1646+607

All names: PG1646+607, Gaia DR2 1624316430453434880, Gaia EDR3 1624316430453434880, USNO-B1.0 1506-00229955, GALEX J164644.3+603708, SBSS 1646+607, PG 1646+607, Gaia DR3 1624316430453434880

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 16 46 44.28 (0.04) 16 46 44.30 16 46 44.28 (0.04)
Declination 60 37 08.74 (0.04) 60 37 09.19 60 37 08.88 (0.04)
Spectral type He-sdO sdO7VIIIHe36
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] 0.36 (0.04) 0.37 (0.06) 0.36 (0.04)
Distance [pc] 2758.62 (301) 2695.42 (434) 2758.62 (301)
Composition
Proper motion (right ascension) [mas/yr] -3.479 (0.06) -3.293 (0.1) -3.479 (0.06)
Proper motion (declination) [mas/yr] -8.764 (0.05) -8.854 (0.1) -8.764 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.10
V magnitude
R magnitude 16.60
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.44 (0.003) 16.46 (0.002) 16.44 (0.003)
BP magnitude 16.29 (0.004) 16.23 (0.008)
RP magnitude 16.73 (0.008) 16.73 (0.008)
Pan g magnitude 16.28 (0.006)
Pan r magnitude 16.70 (0.002)
Pan i magnitude 17.05 (0.003)
Pan z magnitude 17.32 (0.006)
Pan y magnitude 17.51 (0.01)
E(B-V) 0.022

* Constant surface field

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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.