GJ 841 B

All names: CCDM J21577-5100B, Gaia DR3 6558209044297239424, TIC 140045537, WD 2153-512, GJ 841B, ** LDS 765, BPM27606, WD 2154-511, UCAC4 195-196627, WG 39, BPM 27606, CSI-51 13128 22, GJ 841 B, CNS5 5425, WD 2154-512, GEN# +9.86283007, IDS 21511-5128 B, WDJ215738.36-510031.52, L 283-7, WDS J21577-5059B, LTT 8768, NLTT 52493, CD-51 13128B, Gaia DR2 6558209044297239424, 2MASS J21573835-5100313, GALEX J215738.4-510032, WD 2153-51, Gaia EDR3 6558209044297239424

Parameter Unit Gaia EDR3 O'Brien et al. 2024 Gaia DR2 Tremblay et al. 2017 Stilism Holberg et al. 2016 Ferrario et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Holberg et al. 2008 Bergeron et al. 2001 Bergeron et al. 1997 Weidemann and Koester 1995 Koester et al. 1982a Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 21 57 38.28 (0.01) 21 57 38.28 (0.02) 21 57 41.04 21 57 38.28 21 57 38.36 (0.01) 21 57 38.28 21 57 40.44
Declination -51 00 37.88 (0.01) -51 00 37.68 (0.02) -51 00 21.60 -51 00 37.88 -51 00 31.52 (0.01) -51 00 37.68 -50 59 40.56
Spectral type DQP DQP DQ DQ DQ8.3 DQP DQ DC DQ DQ DQ DQ7 DQ7
Effective temperature [K] 6549.0 (41) 7190.0 (90) 7194.0 (92) 6100.0 (200) 6100.0 7193.0 (92) 7600.0 7600.0 (500) 6948.0 (9)
log(g) [cgs] 7.97 (0.02) 7.95 (0.08) 8.03 (0.07) 8.05 (0.002)
Mass [M] 0.555 (0.01) 0.6 (0.04) 0.6 (0.04) 0.67 (0.2) 0.605 (0.002)
log(Luminosity) [L] -3.44
Cooling age [Gyr] 1.6300 1.6300
log(H/He)
log(C/He) -4.35 -4.6 -4.6
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 67.30 (0.02) 67.30 (0.02) 67.25 (0.03) 66.13 (0.5) 63.00 (3) 61.63 (3) 61.13 (3) 68.50 (11) 68.50 (11) 0.06 67.30 67.30 (0.02) 67.25 (0.03) 68.50 (11)
Distance [pc] 14.86 (0.004) 14.86 (0.004) 14.87 (0.006) 15.12 (0.1) 15.87 (0.7) 16.12 16.20 (0.7) 16.36 14.60 (2) 14.60 (2) 15625.00 14.86 14.86 (0.004) 14.87 (0.006) 14.60 (2)
Composition He He He He
Proper motion (right ascension) [mas/yr] -46.2042232 (0.02) -46.19031656 (0.04) -46.204 (0.02) -46.19031656
Proper motion (declination) [mas/yr] -397.4627408 (0.02) -397.3885658 (0.04) -397.463 (0.02) -397.3885658
Variability
Magnetic yes
Bd [MG] 1.3
Infrared excess (disk)
Binarity WDMS WDMS yes
B magnitude 14.93 14.93 14.93 14.94 (0.01)
V magnitude 14.74 (0.03) 14.74 14.74 14.74 14.74 14.73 (0.01)
R magnitude 14.30 14.30 14.30 14.53 (0.08)
I magnitude 14.13 14.13 14.13
J magnitude 14.01 13.47 13.47 14.01 (0.03)
H magnitude 13.91 13.47 13.47 13.91 (0.03)
K magnitude 13.81 13.29 13.29 13.81 (0.05)
u magnitude
g magnitude 14.89 (0.01)
r magnitude
i magnitude
z magnitude
G magnitude 14.52 (0.002) 14.53 14.48 (0.001) 14.52 14.52 (0.003) 14.53
BP magnitude 14.72 (0.002) 14.70 14.70
RP magnitude 14.14 (0.0007) 14.14 14.14
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.000

* 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.