V* RY LMi

All names: SDSS J092415.21+351651.3, G 117-15A, CBS 100, PG 0921+355, WDS J09243+3517A, KUG 0921+354, EGGR 65, UBV 8944, GALEX J092415.2+351651, WD 0921+354, USNO-B1.0 1252-00171660, LEDA 26645, WDJ092415.25+351651.40, uvby98 620020065, LAMOST J092415.25+351651.3, Mrk 396, Gaia DR3 798566915774818176, G 117-B15A, SDSS J092415.21+351651.4, G117-B15A, UCAC4 627-044436, V* RY LMi, 0921+354, USNO 479, ** GIC 86A, TIC 307908863, 2MASS J09241526+3516513, CSI+35-09212, J0924+3516, SDSS J092415.20+351651.4, Gaia EDR3 798566915774818176, Gaia DR2 798566915774818176, WD 0921+35, LSPM J0924+3516W

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Kilic et al. 2020 Leggett et al. 2018 MWDD H Gaia DR2 Stilism Guo et al. 2015 Kepler et al. 2015 Gianninas et al. 2011 Castanheira & Kepler 2008 Kepler et al. 1982 McGraw & Robinson 1976 Richer & Ulrych 1974 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999)
Right ascension 09 24 15.06 (0.03) 09 24 15.06 (0.06) 09 24 15.06 09 24 15.25 (0.03) 09 24 15.06 09 24 16.80
Declination 35 16 51.40 (0.03) 35 16 51.40 (0.04) 35 16 51.40 35 16 51.40 (0.03) 35 16 51.40 35 16 52.68
Spectral type DA DA DA4.3 DA DA DA DA DA4 DAV DAV4
Effective temperature [K] 11599.0 (64) 11599.0 (64) 11614.0 (480) 11622.0 17357.0 (326) 12420.0 12600.0 (193) 12420.0 12420.0 12420.0 12420.0 12060.0 (114) 11630.0
log(g) [cgs] 7.99 (0.006) 7.99 (0.007) 8.02 (0.04) 7.99 8.10 (0.07) 8.12 8.14 (0.05) 8.12 8.12 8.12 8.12 8.04 (0.008) 7.97
Mass [M☉] 0.597 (0.005) 0.597 (0.006) 0.618 (0.03) 0.598 0.68 (0.04) 0.69 (0.03) 0.628 (0.007)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.4190 (0.05) 0.4007
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] 17.39 (0.05) 17.50 (0.4) 17.39 (0.08) 17.39 17.39 (0.05) 17.39 (0.08) 12.00 (5)
Distance [pc] 57.49 (0.1) 57.14 (1) 57.52 (0.3) 55.00 57.49 57.49 (0.1) 57.52 (0.3) 83.33 (35)
Composition H H H
Proper motion (right ascension) [mas/yr] -145.1809418 (0.03) -145.3400379 (0.1) -145.181 (0.03) -145.3400379
Proper motion (declination) [mas/yr] -0.052914164 (0.04) -0.005559134 (0.09) -0.053 (0.04) -0.005559134
Variability VAR VAR VAR VAR VAR VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 15.72
V magnitude 15.50 15.50 15.50 15.50 15.50 15.50
R magnitude 15.99 (0.4)
I magnitude
J magnitude 15.60 (0.07)
H magnitude 15.61 (0.1)
K magnitude 15.47 (0.2)
u magnitude 15.87 (0.005) 15.87 (0.005) 15.89
g magnitude 15.44 (0.003) 15.44 (0.003) 15.47
r magnitude 15.65 (0.003) 15.65 (0.003) 15.66
i magnitude 15.82 (0.004) 15.82 (0.004) 15.83
z magnitude 16.06 (0.007) 16.06 (0.007) 16.09
G magnitude 15.54 (0.004) 15.56 15.54 15.54 (0.003) 15.56
BP magnitude 15.55 (0.004) 15.54 15.54
RP magnitude 15.55 (0.003) 15.56 15.56
Pan g magnitude 15.48 (0.005)
Pan r magnitude 15.63 (0.003)
Pan i magnitude 15.87 (0.002)
Pan z magnitude 16.07 (0.003)
Pan y magnitude 16.20 (0.003)
E(B-V) 0.001
Period #1 [s] 215.2 215.2 215.2 216.0 1311.0
Amplitude #1 [mma] 20.2 17.4 23.9
Period #2 [s] 270.5 270.5 271.0 271.7
Amplitude #2 [mma] 5.6 6.1 7.3
Period #3 [s] 304.1 304.1 304.4 307.7
Amplitude #3 [mma] 6.3 7.5 8.1

* 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.