GJ 799.1

All names: Gaia DR3 6857939315643803776, L711-10, TYC 6339-1107-1, GJ 799.1, NLTT 49718, Zkh 313, LP 815-51, HIP 102207, AC -20 76187, LTT 8189, USNO-B1.0 0699-00803372, L 711-10, 2MASS J20423471-2004356, Gaia EDR3 6857939315643803776, Gaia DR2 6857939315643803776, WISEA J204235.01-200436.9, GALEX J204234.8-200434, UBV 17874, CNS5 5106, CSI-20-20397, FS 34, WD 2039-202, HIC 102207, WDJ204234.75-200435.94, PLX 4932.01, WD 2039-20, EC 20396-2015, TIC 76774929, uvby98 620020141, EGGR 141

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 MWDD H Gaia DR2 Bedard et al. 2017 Tremblay et al. 2017 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 20 42 35.16 (0.04) 20 42 35.15 (0.06) 20 42 34.56 20 42 35.16 20 42 34.75 (0.04) 20 42 35.15 20 42 34.51
Declination -20 04 37.47 (0.02) -20 04 37.42 (0.03) -20 04 33.60 -20 04 37.47 -20 04 35.93 (0.02) -20 04 37.42 -20 04 30.00
Spectral type DA DA DA DA DA DA2.5 DA DA DA DA2.5 DA
Effective temperature [K] 19507.0 (381) 17872.0 20031.0 (295) 20160.0 (300) 20163.0 (300) 19207.0 20163.0 (300) 20160.0 (300) 19738.0 (10) 20711.0 (134)
log(g) [cgs] 7.90 (0.03) 7.84 7.96 (0.04) 7.98 (0.04) 7.98 (0.04) 7.98 (0.04) 7.98 (0.04) 7.79 (0.002) 7.97 (0.005)
Mass [M] 0.568 (0.01) 0.531 0.57 (0.1) 0.62 (0.02) 0.61 (0.03) 0.61 (0.03) 0.61 (0.004)
log(Luminosity) [L] -1.58
Cooling age [Gyr] 0.0782 0.0700 0.0600
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] 45.93 (0.04) 45.93 (0.04) 46.11 (0.07) 48.22 (4) 47.25 (3) 47.39 (4) 45.93 45.93 (0.04) 46.11 (0.07) 39.20 (27)
Distance [pc] 21.77 (0.02) 21.77 (0.02) 21.69 (0.03) 20.70 (2) 20.74 (2) 21.16 (2) 21.10 21.10 (0.8) 21.00 21.77 21.77 (0.02) 21.69 (0.03) 25.51 (18)
Composition H H H H
Proper motion (right ascension) [mas/yr] 357.7992312 (0.04) 358.0015214 (0.1) 357.799 (0.04) 358.0015214
Proper motion (declination) [mas/yr] -96.27613537 (0.03) -96.02451282 (0.07) -96.276 (0.03) -96.02451282
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 12.31
V magnitude 12.40 (0.01) 12.34 12.33 12.33 12.40
R magnitude 12.49
I magnitude 12.60
J magnitude 12.82 (0.03)
H magnitude 12.92 (0.03)
K magnitude 13.00 (0.03)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 12.38 (0.0006) 12.40 12.38 12.38 (0.003) 12.40
BP magnitude 12.30 (0.0006) 12.27 12.27
RP magnitude 12.56 (0.0004) 12.57 12.57
Pan g magnitude 12.27 (0.001)
Pan r magnitude 12.81 (0.1)
Pan i magnitude 13.02 (0.06)
Pan z magnitude 13.16 (0.003)
Pan y magnitude 13.32 (0.001)
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.