V* CD Oct

All names: LFT 1679, WDJ220420.86-751326.06, Gaia EDR3 6358158435541361792, LTT 8816, V* CD Oct, uvby98 600108816, USNO-B1.0 0147-00217633, NLTT 52728, WD 2159-754, JL 97, WD 2159-75, GEN# +9.86048015, LHS 3752, BPM 14525, 2MASS J22042084-7513260, WG 52, EC 21597-7527, L 48-15, CNS5 5453, TIC 290404650, Gaia DR3 6358158435541361792, Gaia DR2 6358158435541361792, GSC 09475-01010

Parameter Unit Gaia EDR3 O'Brien et al. 2024 Gaia DR2 Bedard et al. 2017 Subasavage et al. 2017 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Koester et al. 2009 Subasavage et al. 2008 Holberg et al. 2008 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 22 04 18.65 (0.02) 22 04 18.72 (0.02) 22 04 20.84 22 04 20.64 22 04 20.84 22 04 18.65 22 04 20.86 (0.02) 22 04 18.72 22 04 27.53
Declination -75 13 24.88 (0.02) -75 13 24.91 (0.02) -75 13 02.01 -75 13 22.80 -75 13 26.10 -75 13 24.88 -75 13 26.06 (0.02) -75 13 24.91 -75 13 27.12
Spectral type DA DA DA DA DA5.6 DA DA DA5.5 DA DA DA5.7 DA5
Effective temperature [K] 8875.0 (81) 8748.0 (129) 8900.0 (320) 8862.0 (130) 9040.0 8865.0 (130) 8860.0 (130) 8911.0 (6) 8944.0 (289) 8908.0 (34)
log(g) [cgs] 8.63 (0.02) 8.66 (0.06) 8.59 (0.05) 8.23 (0.06) 8.50 (0.06) 8.79 (0.06) 8.62 (0.008) 8.63 (0.005)
Mass [M] 0.999 (0.01) 0.97 (0.04) 0.75 (0.04) 0.92 (0.04) 1.09 (0.03) 1.002 (0.004)
log(Luminosity) [L] -3.41 (0.07) -3.35
Cooling age [Gyr] 2.3900 (0.3) 1.4300 2.1000
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] 52.55 (0.02) 52.55 (0.02) 52.48 (0.03) 50.23 (1) 52.55 52.55 (0.02) 52.48 (0.03) 32.70
Distance [pc] 19.03 (0.008) 19.03 (0.007) 19.06 (0.01) 19.90 (0.5) 19.91 (0.5) 25.16 (0.6) 15.62 21.00 (1) 16.00 30.50 14.24 19.03 19.03 (0.008) 19.06 (0.01) 30.58
Composition H H H H H H
Proper motion (right ascension) [mas/yr] -527.7139396 (0.02) -527.6718152 (0.05) -527.714 (0.02) -527.6718152
Proper motion (declination) [mas/yr] 74.13358707 (0.02) 74.23166921 (0.05) 74.134 (0.02) 74.23166921
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.22
V magnitude 15.04 15.03 15.06 15.06 15.01
R magnitude 14.93 14.70
I magnitude 14.80
J magnitude 14.72 (0.04) 14.72 (0.04) 14.72 (0.04)
H magnitude 14.67 (0.07) 14.67 (0.07) 14.67 (0.07)
K magnitude 14.55 (0.1) 14.55 (0.1) 14.55 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.99 (0.001) 15.01 14.99 14.99 (0.003) 15.01
BP magnitude 15.08 (0.001) 15.07 15.07
RP magnitude 14.82 (0.001) 14.83 14.83
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
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.