GJ 283 A

All names: GEN# +9.86745046, LAWD 25, L 745-46, WISEA J074021.62-172454.8, UCAC3 146-71201, PLX 1810.1, TIC 289113764, WD 0738-17, LTT 2915, CSI-17-07381, LFT 543, ** LUY 5693A, J0740-1724, Gaia EDR3 5717278911884258176, IDS 07357-1710 A, USNO 517, PM 07381-1717, 2MASS J07402064-1724481, UBV 7373, CCDM J07402-1725A, CSI-17-07381 2, WDS J07402-1724A, UCAC2 25277198, LHS 235, LPM 269, WD 0738-172, UBV 7376, GJ 283 A, EGGR 54, L 745-46 A, DENIS J074020.7-172448, CSI-17-07381 1, GEN# +9.85783003, Zkh 109, PLX 1813, LP 783-3, CNS5 1901, PLX 1810.10, UCAC4 363-032829, L 745-46A, GJ 283A, L745-46A, GCRV 58994, WDJ074020.79-172449.16, NLTT 18271, Gaia DR2 5717278911884258176, Gaia DR3 5717278911884258176

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Coutu et al. 2019 Gaia DR2 Subasavage et al. 2017 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Subasavage et al. 2009 Holberg et al. 2008 Dufour et al. 2007 Bergeron et al. 2001 Koester & Wolff 2000 Weidemann and Koester 1995 Sion et al. 1990 Zeidler-K.T et al. 1986 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 07 40 22.06 (0.01) 07 40 20.79 07 40 22.02 (0.02) 07 40 20.78 07 40 20.64 07 40 20.78 07 40 22.06 07 40 20.79 (0.01) 07 40 22.02 07 40 16.78
Declination -17 24 57.84 (0.01) -17 24 49.16 -17 24 57.57 (0.02) -17 24 04.02 -17 24 46.80 -17 24 49.20 -17 24 57.84 -17 24 49.16 (0.01) -17 24 57.57 -17 24 24.12
Spectral type DZA DZA DZA DZA DAZ DZA6.6 DZA DAZ DZA DA DZ DZA DZQ DC: DZQA6 DZQ6
Effective temperature [K] 7650.0 (62) 7461.0 (145) 7545.0 (587) 7700.0 (210) 7654.0 (226) 7650.0 7650.0 (226) 7600.0 (220) 7590.0 (220) 7710.0 (220) 7500.0 (200) 7800.0 7800.0 7800.0 7347.0 (15)
log(g) [cgs] 8.14 (0.02) 7.98 (0.03) 7.99 8.05 (0.03) 7.92 (0.04) 8.06 (0.04) 8.03 (0.01) 8.07 (0.03) 8.09 (0.03) 8.00 (0.2) 8.00 7.90 (0.003)
Mass [M] 0.661 (0.01) 0.561 (0.02) 0.5671 0.61 (0.03) 0.62 (0.02) 0.62 (0.02) 0.6 (0.01) 0.62 (0.02) 0.63 (0.02) 0.516 (0.003)
log(Luminosity) [L] -3.33 (0.05) -3.35 -3.34 (0.01) -3.35 (0.02)
Cooling age [Gyr] 1.3400 1.2700 1.3100 (0.1) 1.4400 1.4400 1.4100 (0.02) 1.4500 (0.05)
log(H/He) -3.0 -3.3771 (0.04) -3.5 -3.41 (0.03) -3.1 (0.4) <-3.3
log(C/He) <-8.0 <-7
log(Ca/He) -10.94 -10.926 (0.05) -10.99 -10.87 -10.91 (0.03) -10.6 (0.2) -10.4
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He) -9.05 (0.2) -9
log(Al/He) <-9.0
log(Si/He) -9.4 (0.3) -9.5
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) -9.8 (0.2) <-11
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 109.34 (0.02) 109.34 (0.02) 109.22 (0.03) 109.22 109.22 (0.03) 110.59 (0.4) 109.94 (0.6) 112.40 (3) 109.43 (0.6) 107.76 (2) 112.40 (3) 109.34 109.34 (0.02) 109.22 (0.03) 94.60
Distance [pc] 9.15 (0.002) 9.15 (0.002) 9.16 (0.003) 9.16 (0.003) 9.16 (0.002) 9.04 (0.04) 9.10 (0.05) 9.09 8.90 (0.2) 9.14 (0.05) 9.28 8.90 (0.2) 9.15 9.15 (0.002) 9.16 (0.002) 10.57
Composition He He He He He He He He He He
Proper motion (right ascension) [mas/yr] 1138.69 (0.02) 1138.639661 (0.04) 1138.69 (0.02) 1138.639661
Proper motion (declination) [mas/yr] -542.556 (0.02) -542.6730065 (0.04) -542.556 (0.02) -542.6730065
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS yes
B magnitude 13.30 13.30 13.36 (0.03)
V magnitude 13.06 13.02 13.06 13.06 13.06 (0.002)
R magnitude 12.89 12.88 12.88 12.89 (0.002)
I magnitude 12.72 12.72 12.72 12.70 (0.02)
J magnitude 12.65 (0.02) 12.65 (0.02) 12.65 12.65 (0.02) 12.65 12.65 (0.02)
H magnitude 12.61 (0.03) 12.61 (0.03) 12.61 12.61 (0.03) 12.61 12.61 (0.03)
K magnitude 12.58 (0.04) 12.58 (0.04) 12.52 12.58 (0.04) 12.52 12.58 (0.04)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 12.97 (0.003) 12.99 12.97 12.97 (0.003) 12.99
BP magnitude 13.09 (0.003) 13.09 13.09
RP magnitude 12.75 (0.004) 12.76 12.76
Pan g magnitude 13.10 (0.001) 13.10 (0.001)
Pan r magnitude 13.03 (0) 13.03 (0)
Pan i magnitude 13.19 (0.06) 13.19 (0.06)
Pan z magnitude 13.21 (0.001) 13.21 (0.001)
Pan y magnitude 13.27 (0.005) 13.27 (0.005)
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.