GJ 3306

All names: Gaia DR2 3186021141200137472, L 879-14, 2MASS J04374739-0849089, WD 0435-088, WISEA J043747.57-084926.7, LHS 194, PLX 1026.01, L879-14, LP 655-42, WDJ043747.41-084910.62, UBV 4469, PM 04354-0854, Gaia DR3 3186021141200137472, TIC 55997020, EGGR 41, CSI-08-04354, WD 0435-08, J0437-0849, USNO 593, LFT 367, GJ 3306, PSO J069.4484-08.8251, CNS5 1153, Gaia EDR3 3186021141200137472, LTT 2049, NLTT 13658

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Coutu et al. 2019 Blouin et al. 2019 Gaia DR2 Subasavage et al. 2017 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Holberg et al. 2008 Dufour et al. 2005 Bergeron et al. 2001 Bergeron et al. 1997 Weidemann and Koester 1995 Wegner and Yackovich 1984 Koester et al. 1982a Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 04 37 47.66 (0.01) 04 37 47.39 04 37 47.66 (0.02) 04 37 47.41 04 37 47.28 04 37 47.66 04 37 47.41 (0.01) 04 37 47.66 04 37 48.02
Declination -08 49 35.46 (0.008) -08 49 08.93 -08 49 34.68 (0.01) -08 49 01.07 -08 49 08.40 -08 49 35.46 -08 49 10.62 (0.008) -08 49 34.68 -08 47 57.12
Spectral type DQ DQ DQ DQ DQ DQ DQ8.0 DQ DQ DQ DQ DQ DQ DQ DQ8 DQ7
Effective temperature [K] 6601.0 (38) 6275.0 (7) 6396.0 (121) 6395.0 (30) 6290.0 (120) 6368.0 (117) 6367.0 6367.0 (117) 6300.0 (110) 6620.0 (160) 6650.0 (160) 7200.0 6600.0 7000.0 (300) 6711.0 (7)
log(g) [cgs] 8.05 (0.02) 7.91 (0.002) 7.96 7.97 (0.01) 7.92 (0.03) 7.91 (0.04) 7.93 (0.04) 7.93 (0.04) 8.08 (0.04) 8.11 (0.04) 8.07 (0.002)
Mass [M] 0.604 (0.01) 0.519 (0.002) 0.5485 0.552 (0.008) 0.53 (0.03) 0.53 (0.02) 0.53 (0.02) 0.53 (0.02) 0.62 (0.02) 0.64 (0.02) 0.75 (0.08) 0.614 (0.002)
log(Luminosity) [L] -3.61 (0.04) -3.59 -3.61 (0.02) -3.62 (0.02)
Cooling age [Gyr] 1.9100 1.8500 1.8610 (0.04) 1.8600 (0.1) 1.8500 1.8500 2.2200 (0.2) 2.7400 (0.1) 1.2000
log(H/He) <-2.7
log(C/He) -6.43 -6.3082 (0.007) -6.34 -6.49 -6.33 -6.41 (0.06) -5.7 -5.7 -5.7
log(Ca/He)
log(Ca/H)
log(N/He) <-9
log(O/He) <-9
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 106.34 (0.02) 106.34 (0.02) 106.27 (0.02) 106.27 106.27 (0.02) 106.27 (0.02) 106.04 (1) 105.20 (3) 105.20 (3) 105.20 (3) 105.20 (3) 105.20 (3) 0.11 106.34 106.34 (0.02) 106.27 (0.02) 105.10 (3)
Distance [pc] 9.40 (0.001) 9.40 (0.002) 9.41 (0.002) 9.41 (0.002) 9.41 (0.002) 9.41 (0.002) 9.43 (0.1) 9.51 (0.2) 9.50 9.51 (0.2) 9.51 9.51 (0.2) 9.51 (0.2) 9345.79 9.40 9.40 (0.001) 9.41 (0.002) 9.51 (0.2)
Composition He He He He He He He He He He He
Proper motion (right ascension) [mas/yr] 238.3809873 (0.02) 238.3535757 (0.04) 238.381 (0.02) 238.3535757
Proper motion (declination) [mas/yr] -1552.407986 (0.02) -1552.416994 (0.03) -1552.408 (0.02) -1552.416994
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.08 14.08 14.08 14.24
V magnitude 13.75 13.78 13.75 13.75 13.75 14.10
R magnitude 13.44 13.43 13.43 13.43
I magnitude 13.18 13.18 13.18 13.18
J magnitude 13.00 (0.03) 13.01 (0.03) 13.01 (0.03) 13.00 13.00 13.00 13.01 (0.03)
H magnitude 12.85 (0.03) 12.91 (0.03) 12.91 (0.03) 12.85 12.85 12.85 12.91 (0.03)
K magnitude 12.79 (0.03) 12.76 (0.04) 12.76 (0.04) 12.79 12.79 12.79 12.76 (0.04)
u magnitude
g magnitude 13.86 (0.002)
r magnitude 13.62 (0.001)
i magnitude 13.58 (0.0007)
z magnitude 13.66 (0.001)
G magnitude 13.60 (0.0003) 13.61 13.60 13.60 (0.003) 13.61
BP magnitude 13.81 (0.0006) 13.79 13.79
RP magnitude 13.24 (0.0005) 13.24 13.24
Pan g magnitude 13.86 (0.0002) 13.86 (0.002) 13.86 (0.002)
Pan r magnitude 13.61 (0.004) 13.62 (0.001) 13.62 (0.001)
Pan i magnitude 13.60 (0.001) 13.58 (0.0007) 13.58 (0.001)
Pan z magnitude 13.66 (0.001) 13.66 (0.001) 13.66 (0.001)
Pan y magnitude 13.66 (2e-05) 13.67 (0.01) 13.67 (0.01)
E(B-V) 0.000

* 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.