V* BT Cam

All names: LSPM J1201+8004, WD 1159+80, Gaia EDR3 1717969674107797760, G255-2, LP 7-200, WD 1159+803, Gaia DR3 1717969674107797760, G 255-2, TIC 156197735, 2MASS J12014457+8004593, EGGR 355, WDJ120144.57+800459.70, NLTT 29337, V* BT Cam, Gaia DR2 1717969674107797760, USNO-B1.0 1700-00043815

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Mukadam et al. 2006 Fu et al. 2002 Vauclair & Bonazzola 1981 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 01 43.38 (0.04) 12 01 43.42 (0.06) 12 01 43.38 12 01 44.58 (0.04) 12 01 43.42 12 01 47.86
Declination 80 04 58.82 (0.03) 80 04 58.84 (0.04) 80 04 58.82 80 04 59.70 (0.03) 80 04 58.84 80 05 00.24
Spectral type DA DA DA DA4.3 DAV DAV5
Effective temperature [K] 10971.0 11760.0 (180) 11440.0 11440.0 11440.0 11409.0 (97) 11440.0
log(g) [cgs] 8.04 8.24 (0.05) 8.14 8.14 8.14 8.08 (0.01) 8.17
Mass [M☉] 0.626 0.75 (0.03) 0.654 (0.008)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.4979
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] 15.20 (0.04) 15.20 (0.06) 15.20 15.20 (0.04) 15.20 (0.06)
Distance [pc] 65.79 (0.2) 65.77 (0.2) 65.00 65.79 65.79 (0.2) 65.77 (0.2)
Composition H H
Proper motion (right ascension) [mas/yr] -193.3250207 (0.04) -193.0648619 (0.1) -193.325 (0.04) -193.0648619
Proper motion (declination) [mas/yr] -55.04766436 (0.04) -54.98355864 (0.08) -55.048 (0.04) -54.98355864
Variability VAR VAR VAR VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.90
V magnitude 16.00 16.00 16.00 16.04
R magnitude 16.20
I magnitude
J magnitude 16.00 (0.09)
H magnitude 15.88 (0.2)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.02 (0.007) 16.04 16.02 16.02 (0.003) 16.04
BP magnitude 16.03 (0.007) 16.04 16.04
RP magnitude 16.00 (0.005) 16.01 16.01
Pan g magnitude 16.01 (0.009)
Pan r magnitude 16.12 (0.02)
Pan i magnitude 16.32 (0.01)
Pan z magnitude 16.51 (0.005)
Pan y magnitude 16.67 (0.02)
E(B-V) 0.004
Period #1 [s] 568.5 399.0 384.6
Amplitude #1 [mma] 6.6
Period #2 [s] 607.9 461.0 476.2
Amplitude #2 [mma] 13.1
Period #3 [s] 681.2 573.0 689.7
Amplitude #3 [mma] 24.9 36.0
Period #4 [s] 775.2 608.0 840.3
Amplitude #4 [mma] 15.2 36
Period #5 [s] 819.7 660.0
Amplitude #5 [mma] 11.3
Period #6 [s] 855.4 681.0
Amplitude #6 [mma] 11.2
Period #7 [s] 898.5 764.0
Amplitude #7 [mma] 9.4
Period #8 [s] 810.0
Amplitude #8 [mma]
Period #9 [s] 855.0
Amplitude #9 [mma]
Period #10 [s] 906.0
Amplitude #10 [mma]

* 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.