V* HW Aqr

All names: GALEX J235121.9-240818, Gaia DR3 2338349628107880192, WD 2348-244, WDJ235122.09-240817.33, 2MASS J23512208-2408171, LP 879-26, Gaia DR2 2338349628107880192, USNO-B1.0 0658-00867413, TIC 33986466, EC 23487-2424, WD 2349-244, G 275-116, WD2348-244, V* HW Aqr, LEHPM 6321, Gaia EDR3 2338349628107880192, NLTT 58183, LTT 58183, LEHPM 6322

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Thompson et al. 2005 Koester et al. 2001 Stobie et al. 1993 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999)
Right ascension 23 51 21.97 (0.03) 23 51 21.98 (0.06) 23 51 22.10 23 51 21.97 23 51 22.09 (0.03) 23 51 21.98 23 51 17.09
Declination -24 08 21.05 (0.03) -24 08 20.93 (0.04) -24 08 17.00 -24 08 21.05 -24 08 17.33 (0.03) -24 08 20.93 -24 07 18.48
Spectral type DA DA DA DA DA4.2 DAV DAV
Effective temperature [K] 11601.0 11880.0 (176) 11406.0 (14) 11560.0 11282.0 (17) 11560.0 11195.0 (91) 11520.0
log(g) [cgs] 8.07 8.17 (0.05) 8.04 (0.006) 8.09 8.02 (0.01) 8.09 8.02 (0.009) 8.10
Mass [M☉] 0.647 0.71 (0.03) 0.62 0.616 (0.008)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.4498
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] 20.02 (0.03) 20.08 (0.06) 20.02 20.02 (0.03) 20.08 (0.06)
Distance [pc] 49.95 (0.08) 49.80 (0.2) 48.00 49.95 49.95 (0.08) 49.80 (0.2)
Composition H H
Proper motion (right ascension) [mas/yr] -100.4227031 (0.04) -100.4114515 (0.1) -100.423 (0.04) -100.4114515
Proper motion (declination) [mas/yr] -232.391094 (0.03) -232.3977768 (0.09) -232.391 (0.03) -232.3977768
Variability VAR VAR VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.52
V magnitude 15.33 15.50 15.33 15.50 15.33
R magnitude 15.10
I magnitude
J magnitude 15.43 (0.05)
H magnitude 15.40 (0.1)
K magnitude 15.09 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.36 (0.006) 15.38 15.36 15.36 (0.004) 15.38
BP magnitude 15.39 (0.006) 15.37 15.37
RP magnitude 15.35 (0.006) 15.34 15.34
Pan g magnitude 15.29 (0.02)
Pan r magnitude 15.45 (0.02)
Pan i magnitude 15.67 (0.006)
Pan z magnitude 15.87 (0.004)
Pan y magnitude 16.00 (0.01)
E(B-V) 0.001
Period #1 [s] 508.1 804.5
Amplitude #1 [mma] 15 19.3
Period #2 [s] 878.8 868.2
Amplitude #2 [mma] 34.0 12.8
Period #3 [s] 989.3
Amplitude #3 [mma] 11.0
Period #4 [s] 993.0
Amplitude #4 [mma] 37.7

* 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.