EGGR 69

All names: GALEX J095748.2+243254, PM J09578+2432, UCAC2 40517150, EGGR 69, USNO 232, LTT 12661, TIC 307987854, UBV 9323, USNO-B1.0 1145-00173871, PG, G49-33, SDSS J095748.25+243253.9, SDSS J095748.25+243253.8, NLTT 23036, WDJ095748.35+243255.54, 2MASS J09574838+2432559, GJ 3575, Gaia DR2 642685200933153408, 0955+247, PG 0954+248, G49-33, G 54-6, J0957+2432, Gaia EDR3 642685200933153408, uvby98 980049033, CSI+24-09550, PLX 2356.01, LSPM J0957+2432, UBV M 53582, 09578+2432, WD 0955+247, G 49-33, GCRV 21719, GEN# +9.80049033, Gaia DR3 642685200933153408, WD 0955+24

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Leggett et al. 2018 MWDD H MWDD HE Gaia DR2 Bedard et al. 2017 Stilism Holberg et al. 2016 Limoges et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Koester et al. 2009 Holberg et al. 2008 Zuckerman et al. 2003 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 57 48.03 (0.03) 09 57 48.25 09 57 48.04 (0.05) 09 57 48.04 (0.05) 09 57 48.24 09 57 48.03 09 57 48.35 (0.03) 09 57 48.04 09 57 49.51 09 57 48.25
Declination 24 32 50.52 (0.02) 24 32 53.87 24 32 50.68 (0.04) 24 32 50.68 (0.04) 24 32 52.80 24 32 50.52 24 32 55.54 (0.02) 24 32 50.68 24 33 03.96 24 32 53.91
Spectral type DA DA DA DA5.9 DA DA DA DA5.8 DA DA DA DA DA DA DA5.8 DA DA5.5 DA DA
Effective temperature [K] 8488.0 (74) 8848.0 (21) 8521.6 (38) 8516.0 (223) 8460.0 8204.0 8529.0 (123) 8630.0 (229) 8530.0 (122) 8621.0 8634.0 (229) 8640.0 (125) 8446.0 (6) 8322.0 8670.0 (220) 8619.0 (41) 8403.0 (15)
log(g) [cgs] 8.05 (0.02) 8.14 (0.004) 8.07 (0.01) 7.99 (0.04) 8.05 7.96 8.18 (0.05) 8.01 (0.1) 8.18 (0.05) 8.26 (0.1) 8.35 (0.06) 7.99 (0.009) 8.16 8.27 (0.1) 8.09 (0.008) 8.13 (0.02)
Mass [M] 0.629 (0.01) 0.68 (0.004) 0.59 (0.03) 0.627 0.552 0.63 (0.2) 0.6 (0.09) 0.7 (0.03) 0.76 (0.1) 0.82 (0.04) 0.77 (0.1) 0.651 (0.007) 0.671 (0.01)
log(Luminosity) [L] -3.21 -3.24 -3.24 (0.09)
Cooling age [Gyr] 1.0500 0.8990 (0.08) 1.0010 0.9891 0.9100 1.3000 1.3100 (0.4)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) <-11.060
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] 36.28 (0.03) 36.28 (0.03) 36.27 (0.06) 36.27 (0.06) 34.40 (0.5) 36.27 (0.06) 40.90 (4) 40.90 (4) 40.90 (4) 40.90 (4) 40.90 (4) 36.28 36.28 (0.03) 36.27 (0.06) 41.20 (4)
Distance [pc] 27.56 (0.03) 27.56 (0.02) 27.57 (0.05) 27.57 (0.05) 29.07 (0.4) 27.57 (0.05) 24.10 (3) 24.45 (3) 24.40 (3) 24.44 24.40 (3) 23.00 18.95 24.45 (3) 27.56 27.56 (0.03) 27.57 (0.05) 24.27 (3)
Composition H H H H H H H H
Proper motion (right ascension) [mas/yr] -269.6756904 (0.03) -269.7759464 (0.09) -269.676 (0.03) -269.776
Proper motion (declination) [mas/yr] -313.7261269 (0.03) -313.5599702 (0.08) -313.726 (0.03) -313.56
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.30 15.30 15.34
V magnitude 15.08 15.06 15.07 15.06 15.09
R magnitude 14.94 14.94 14.40
I magnitude 14.74 14.74
J magnitude 14.68 (0.004) 14.66 14.67 14.66 14.65 (0.03)
H magnitude 14.66 (0.07) 14.59 14.50 14.59 14.66 (0.07)
K magnitude 14.66 (0.08) 14.65 14.55 14.65 14.66 (0.08)
u magnitude 15.37 (0.004) 15.36 (0.004) 15.37 (0.004) 15.37 (0.004) 15.39 15.42 (0.02)
g magnitude 15.10 (0.004) 15.10 (0.004) 15.10 (0.004) 15.14 15.13 (0.02)
r magnitude 15.08 (0.004) 15.08 (0.004) 15.08 (0.004) 15.10 15.09 (0.02)
i magnitude 15.13 (0.004) 15.13 (0.004) 15.13 (0.004) 15.15 15.12 (0.02)
z magnitude 15.26 (0.005) 15.26 (0.005) 15.26 (0.005) 15.30 15.26 (0.02)
G magnitude 15.02 (0.002) 15.03 15.03 15.02 15.02 (0.003) 15.03
BP magnitude 15.13 (0.002) 15.12 15.12
RP magnitude 14.82 (0.001) 14.83 14.83
Pan g magnitude 15.11 (0.002) 15.11 (0.002)
Pan r magnitude 15.09 (0.002) 15.09 (0.002)
Pan i magnitude 15.15 (0.002) 15.15 (0.002)
Pan z magnitude 15.26 (0.002) 15.26 (0.002)
Pan y magnitude 15.34 (0.005) 15.34 (0.004)
E(B-V) 0.001

* 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.