BD+37 1977

All names: BD+371977, HIC 46131, GSC 02500-01315, TIC 372681399, Gaia DR2 810807778726301952, TYC 2500-1315-1, BD+37 1977, TD1 30890, Gaia DR3 810807778726301952, HIP 46131, 2MASS J09242637+3642532, Renson 23010

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 09 24 26.38 09 24 26.39 (0.05)
Declination 36 42 53.29 36 42 53.30 (0.04)
Spectral type sdO sdO
Effective temperature [K] 48000.0
log(g) [cgs] 4.00
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.79 (0.1) 0.62 (0.07)
Distance [pc] 1273.40 (178) 1618.65 (177)
Composition
Proper motion (right ascension) [mas/yr] 10.908 (0.1) 10.859 (0.05)
Proper motion (declination) [mas/yr] -11.686 (0.1) -11.767 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 9.86 (0.03)
V magnitude 10.15 (0.04)
R magnitude
I magnitude
J magnitude 10.84 (0.02) 10.84 (0.02)
H magnitude 10.99 (0.03) 10.99 (0.03)
K magnitude 11.04 (0.02) 11.04 (0.02)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 10.13 (0.001) 10.13 (0.003)
BP magnitude 9.97 (0.003)
RP magnitude 10.44 (0.001)
Pan g magnitude 10.00
Pan r magnitude 10.46
Pan i magnitude 10.82
Pan z magnitude 11.10
Pan y magnitude 11.34
E(B-V) 0.019

* 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.