LS IV +10 9

All names: CSI+10-20406, GEN# +8.04100009, LSIV+109, ALS 11497, LS IV +10 9, UBV M 51009, uvby98 804100009, 2MASS J20430247+1034209, TIC 282627500, Gaia DR3 1751329750248988544, GALEX J204302.4+103427, TYC 1093-369-1, Gaia DR2 1751329750248988544

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 20 43 02.45 20 43 02.48 (0.04)
Declination 10 34 21.14 10 34 21.00 (0.03)
Spectral type He-sdO sdO
Effective temperature [K] 45700.0 (1070)
log(g) [cgs] 6.08 (0.2)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.04 (0.06) 1.97 (0.05)
Distance [pc] 489.96 (15) 506.64 (13)
Composition
Proper motion (right ascension) [mas/yr] 0.682 (0.1) 0.556 (0.05)
Proper motion (declination) [mas/yr] 0.961 (0.09) 0.793 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 11.71
V magnitude 12.06
R magnitude
I magnitude
J magnitude 12.63 (0.02) 12.63 (0.02)
H magnitude 12.81 (0.02) 12.81 (0.02)
K magnitude 12.92 (0.03) 12.92 (0.03)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 11.97 (0.0008) 11.95 (0.003)
BP magnitude 11.74 (0.008)
RP magnitude 12.24 (0.001)
Pan g magnitude 11.69
Pan r magnitude 12.20
Pan i magnitude 12.57
Pan z magnitude 12.89
Pan y magnitude 13.06 (0.002)
E(B-V) 0.078

* 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.