EGGR 120

All names: uvby98 980180065, L 1491-27, NLTT 43310, TIC 57103541, LTT 14945, G 18-65, G 180-65, KUV 16376+3331, Gaia DR2 1326398777041821568, USNO-B1.0 1234-00264812, Gaia EDR3 1326398777041821568, WD 1637+33, G180-65, FBS 1637+335, UBV 14107, J1639+3325, KUV 433-4, PM J16394+3325, 2MASS J16392782+3325229, UCAC2 43454735, SDSS J163927.82+332520.8, Gaia DR3 1326398777041821568, G 181-2, FBS B 577, LHS 6310, LSPM J1639+3325, CSI+33-16376, WD 1637+335, PG 1637+335, PLX 3788.01, WDJ163927.82+332522.24, 16394+3325, UBV M 42661, SDSS J163927.81+332520.8, LP 275-78, GALEX J163927.7+332519, USNO 253, EGGR 120

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Kilic et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Limoges et al. 2015 Gianninas et al. 2011 Liebert et al. 2005 Zuckerman et al. 2003 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 39 27.80 (0.01) 16 39 27.80 (0.02) 16 39 27.80 (0.02) 16 39 27.80 16 39 27.82 (0.01) 16 39 27.80 16 39 27.36
Declination 33 25 14.78 (0.01) 33 25 15.01 (0.02) 33 25 15.01 (0.02) 33 25 14.78 33 25 22.24 (0.01) 33 25 15.01 33 25 29.28
Spectral type DA DA DA DA DA DA DA DA DA DA DA DA DA4.9 DA
Effective temperature [K] 9900.0 (38) 9989.0 (85) 9919.0 (30) 10063.7 (29) 9816.0 (18) 9878.0 10151.0 (147) 10180.0 (146) 10360.0 (149) 10150.0 (149) 9940.0 9940.0 (280) 9957.0 (35)
log(g) [cgs] 8.00 (0.005) 8.01 (0.02) 8.01 (0.005) 8.03 (0.007) 7.98 (0.003) 8.00 8.05 (0.05) 8.03 (0.05) 8.27 (0.05) 8.17 (0.06) 8.13 8.13 (0.1) 8.01 (0.006)
Mass [M] 0.601 (0.005) 0.608 (0.01) 0.603 (0.004) 0.59 (0.002) 0.6 0.57 (0.1) 0.62 (0.03) 0.77 (0.03) 0.71 (0.04) 0.68 (0.08) 0.606 (0.005)
log(Luminosity) [L] -2.81 -2.90 -2.91 (0.08)
Cooling age [Gyr] 0.6500 0.6230 0.8318 0.7400 (0.1)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) <-10.679
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] 32.79 (0.02) 32.79 (0.02) 32.82 (0.03) 32.82 (0.03) 32.82 (0.03) 35.00 (3) 35.00 (3) 32.79 32.79 (0.02) 32.82 (0.03) 32.00 (4)
Distance [pc] 30.50 (0.02) 30.50 (0.02) 30.47 (0.03) 30.47 (0.02) 30.47 (0.02) 29.20 (3) 28.60 (3) 27.00 28.00 28.57 (3) 30.50 30.50 (0.02) 30.47 (0.02) 31.25 (4)
Composition H H H H H H H
Proper motion (right ascension) [mas/yr] -20.73407586 (0.02) -20.82975574 (0.04) -20.734 (0.02) -20.82975574
Proper motion (declination) [mas/yr] -466.5889669 (0.02) -466.6197541 (0.05) -466.589 (0.02) -466.6197541
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.83 14.83
V magnitude 14.65 14.65
R magnitude 14.59 14.60
I magnitude 14.51
J magnitude 14.55 (0.004) 14.56 14.55 (0.03)
H magnitude 14.47 (0.04) 14.50 14.47 (0.05)
K magnitude 14.42 (0.08) 14.54 14.42 (0.08)
u magnitude 15.04 (0.005) 15.04 (0.005) 15.04 (0.005) 14.99
g magnitude 14.61 (0.004) 14.61 (0.004) 14.61
r magnitude 14.69 (0.004) 14.69 (0.004) 14.69
i magnitude 14.81 (0.005) 14.81 (0.005) 14.81
z magnitude 15.00 (0.005) 15.00 (0.005) 15.01
G magnitude 14.62 (0.001) 14.63 14.63 14.62 14.62 (0.003) 14.63
BP magnitude 14.67 (0.001) 14.67 14.67
RP magnitude 14.53 (0.001) 14.54 14.54
Pan g magnitude 14.64 (0.001) 14.63 (0.003)
Pan r magnitude 14.71 (0.001) 14.72 (0.002)
Pan i magnitude 14.84 (0.001) 14.84 (0.001)
Pan z magnitude 15.01 (0.001) 15.02 (0.006)
Pan y magnitude 15.10 (0.02) 15.12 (0.004)
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.