EGGR 92

All names: USNO-B1.0 1047-00215871, LSPM J1247+1442E, GEN# +9.80061017, NLTT 31890, EGGR 92, Gaia DR3 3930922058356114560, G 61-17, ** EGG 7, WD 1244+14, Gaia DR2 3930922058356114560, WDS J12472+1442BC, 2MASS J12471477+1442307, Gaia EDR3 3930922058356114560, GCRV 63553, LTT 18245, UBV 11487, CSI+14-12448, J1247+1442, uvby98 600118245, WD 1244+149, WD 1244+15, PG 1244+149, PLX 2941.02, ** GIC 109B, TIC 92043865, G61-17, SDSS J124714.61+144231.5, WD 1244+145, USNO 733, WDJ124714.71+144230.88, G 149-7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Liebert et al. 2005 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 47 14.32 (0.04) 12 47 14.33 (0.05) 12 47 14.32 12 47 14.71 (0.04) 12 47 14.33 12 47 15.24
Declination 14 42 33.25 (0.02) 14 42 33.18 (0.04) 14 42 33.25 14 42 30.88 (0.02) 14 42 33.18 14 42 25.92
Spectral type DA DA DA DA DA DA DA4.6 DA5
Effective temperature [K] 10482.0 (29) 10482.0 (29) 10482.0 10870.0 (161) 10680.0 (156) 10280.0 (310) 10488.0 (65)
log(g) [cgs] 7.96 (0.005) 7.96 (0.005) 7.96 8.15 (0.05) 8.06 (0.05) 7.88 (0.4) 7.96 (0.01)
Mass [M☉] 0.576 (0.004) 0.576 (0.004) 0.577 0.69 (0.03) 0.64 (0.03) 0.53 (0.2) 0.578 (0.008)
log(Luminosity) [L☉] -2.75 -2.71 (0.2)
Cooling age [Gyr] 0.5042 0.6310 0.4800 (0.2)
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] 16.39 (0.05) 16.39 (0.05) 15.70 (4) 16.39 16.39 (0.05) 16.39 (0.05) 14.40 (42)
Distance [pc] 60.99 (0.2) 61.00 (0.2) 55.00 59.00 63.69 (17) 60.99 60.99 (0.2) 61.00 (0.2) 69.44 (203)
Composition H H H H
Proper motion (right ascension) [mas/yr] -354.3813646 (0.05) -354.5812355 (0.1) -354.381 (0.05) -354.5812355
Proper motion (declination) [mas/yr] 148.668455 (0.05) 148.5636559 (0.07) 148.668 (0.05) 148.5636559
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 16.06 16.08
V magnitude 15.90 15.89
R magnitude 15.86 15.90
I magnitude 15.83
J magnitude 15.84 15.88 (0.008)
H magnitude 15.86 15.86 (0.01)
K magnitude 15.84 15.90 (0.03)
u magnitude 16.32 (0.006) 16.32 (0.006) 16.24
g magnitude 15.87 (0.004) 15.87 (0.004) 15.85
r magnitude 15.96 (0.005) 15.96 (0.005) 15.94
i magnitude 16.13 (0.005) 16.13 (0.005) 16.14
z magnitude 16.32 (0.008) 16.32 (0.008) 16.36
G magnitude 15.89 (0.002) 15.91 15.89 15.89 (0.003) 15.91
BP magnitude 15.93 (0.002) 15.93 15.93
RP magnitude 15.83 (0.004) 15.84 15.84
Pan g magnitude 15.86 (0.002)
Pan r magnitude 15.98 (0.002)
Pan i magnitude 16.14 (0.0004)
Pan z magnitude 16.33 (0.01)
Pan y magnitude 16.45 (0.02)
E(B-V) 0.002

* 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.