V* DN Dra

All names: LSPM J1648+5903, USNO 339, EGGR 368, PM J16484+5903, WISE J164825.81+590319.6, 16484+5903, G 226-29, PLX 3832.01, TIC 199666369, 2MASS J16482562+5903228, Gaia DR3 1431783457574556672, HIC 82257, WD 1647+591, WDJ164825.63+590322.66, LP 101-148, USNO-B1.0 1490-00237056, BPS BS 16080-0073, WISEA J164825.80+590319.5, G226-29, Gaia DR2 1431783457574556672, HIP 82257, CNS5 4118, UCAC4 746-052564, ** PRB 7A, V* DN Dra, Gaia DR1 1431783457574556672, TYC 3885-860-1, GJ 1206, Gaia EDR3 1431783457574556672, ASCC 197749, SBSS 1647+591, G226-029, WDS J16484+5903A, WD 1647+59, GEN# +9.80226029, NLTT 43637

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 McCleery et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Tremblay et al. 2017 Stilism Holberg et al. 2016 Ferrario et al. 2015 Limoges et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Holberg et al. 2008 Kepler et al. 1995 Kepler et al. 1983 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 48 25.91 (0.02) 16 48 25.90 (0.03) 16 48 25.90 (0.03) 16 48 25.44 16 48 25.91 16 48 25.63 (0.02) 16 48 25.90 16 48 25.61
Declination 59 03 17.89 (0.03) 59 03 18.04 (0.05) 59 03 18.04 (0.05) 59 03 21.60 59 03 17.89 59 03 22.66 (0.03) 59 03 18.04 59 03 32.40
Spectral type DA DA DAV DA DAV DAV DA DA DAV4.1 DA DA DAV DA DA4.0 DAV DAV4
Effective temperature [K] 12182.0 (139) 12369.9 (59) 12491.0 12517.0 (195) 12510.0 (200) 12562.0 (201) 12570.0 (197) 12738.0 12738.0 (201) 12740.0 (201) 12510.0 12510.0 11848.0 (59) 12460.0
log(g) [cgs] 8.29 (0.01) 8.30 (0.006) 8.34 8.34 (0.05) 8.34 (0.05) 8.22 (0.05) 8.31 (0.05) 8.24 (0.05) 8.38 (0.05) 8.35 8.35 8.25 (0.005) 8.28
Mass [M] 0.783 (0.009) 0.821 0.83 (0.09) 0.75 (0.03) 0.8 (0.03) 0.76 (0.03) 0.84 (0.03) 0.761 (0.004)
log(Luminosity) [L] -2.61 -2.55
Cooling age [Gyr] 0.5629 0.5000 0.4500
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] 91.34 (0.02) 91.34 (0.02) 91.41 (0.04) 91.41 (0.04) 91.04 (0.6) 90.97 (2) 81.90 (5) 91.13 (2) 91.13 (2) 91.34 91.34 (0.02) 91.41 (0.04) 80.00 (4)
Distance [pc] 10.95 (0.003) 10.95 (0.002) 10.94 (0.005) 10.94 (0.005) 11.00 (0.1) 10.98 (0.07) 10.99 (0.3) 12.20 (0.6) 10.95 11.00 (0.5) 11.00 10.79 10.95 10.95 (0.003) 10.94 (0.005) 12.50 (0.6)
Composition H H H H H H H
Proper motion (right ascension) [mas/yr] 131.7124502 (0.02) 131.5457762 (0.06) 131.712 (0.02) 131.5457762
Proper motion (declination) [mas/yr] -297.7825713 (0.03) -298.046693 (0.1) -297.783 (0.03) -298.046693
Variability VAR VAR VAR VAR VAR
Magnetic
Bd [MG] <0.005
Infrared excess (disk)
Binarity
B magnitude 12.34 (0.02)
V magnitude 12.24 (0.03) 12.21 12.24 12.20 12.20 12.17 (0.04) 12.24
R magnitude 12.44 (0.05)
I magnitude
J magnitude 12.43 (0.02)
H magnitude 12.46 (0.02)
K magnitude 12.52 (0.03)
u magnitude
g magnitude 12.18 (0.02)
r magnitude 12.36 (0.02)
i magnitude 12.54 (0.04)
z magnitude
G magnitude 12.28 (0.001) 12.29 12.29 12.29 (0.001) 12.28 12.28 (0.003) 12.29
BP magnitude 12.28 (0.001) 12.27 12.27
RP magnitude 12.30 (0.0008) 12.30 12.30
Pan g magnitude 12.23 (0.001)
Pan r magnitude 12.41 (0.02)
Pan i magnitude 12.80 (0.003)
Pan z magnitude 12.81 (0.004)
Pan y magnitude 12.97 (0.007)
E(B-V) 0.000
Period #1 [s] 109.1 109.1
Amplitude #1 [mma] 2.5 3
Period #2 [s] 109.3 109.3
Amplitude #2 [mma] 1.1 1.0
Period #3 [s] 109.5 109.5
Amplitude #3 [mma] 2.8 3.0

* 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.