All names: AAVSO 2258+16B, KUV23012+1702, Gaia DR3 2830539033255948288, KUV 23012+1702, SDSS J230341.81+171754.9, NSV 26006, CRTS J230341.8+171755, Gaia DR2 2830539033255353472, V* V369 Peg, USNO-B1.0 1072-00709903
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 23 03 41.81 | 23 03 41.81 (0.2) | ||
Declination | 17 17 55.56 | 17 17 55.03 (0.2) | ||
Spectral type | sdB | sdBe | ||
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] | 0.68 (0.9) | 0.85 (0.2) | |
Distance | [pc] | 1480.38 (2011) | 1175.36 (279) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | -4.893 (2) | -4.697 (0.2) | |
Proper motion (declination) | [mas/yr] | -3.658 (1) | -5.03 (0.4) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 20.00 | |||
V magnitude | ||||
R magnitude | 20.10 | |||
I magnitude | ||||
J magnitude | ||||
H magnitude | ||||
K magnitude | ||||
u magnitude | 19.79 (0.04) | 19.79 (0.04) | ||
g magnitude | 19.84 (0.01) | 19.84 (0.01) | ||
r magnitude | 19.62 (0.02) | 19.62 (0.02) | ||
i magnitude | 19.42 (0.02) | 19.42 (0.02) | ||
z magnitude | 19.25 (0.05) | 19.25 (0.05) | ||
G magnitude | 20.11 (0.02) | 20.11 (0.02) | ||
BP magnitude | 20.10 (0.4) | |||
RP magnitude | 19.74 (0.08) | |||
Pan g magnitude | 19.47 (0.1) | |||
Pan r magnitude | 19.25 (0.1) | |||
Pan i magnitude | 18.15 (0.05) | |||
Pan z magnitude | 19.15 (0.06) | |||
Pan y magnitude | 19.00 (0.06) | |||
E(B-V) | 0.055 |
* 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.