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Binary star system in the constellation Puppis
HD 49798 is a binary star in the constellation Puppis about 521 ± 14 parsecs (1,699 ± 46 ly) from Earth. It has an apparent magnitude of 8.3, making it
HD_49798
(30 May 2023). "Timing the X-ray pulsating companion of the hot subdwarf HD 49798 with NICER". Monthly Notices of the Royal Astronomical Society. 523 (2):
List_of_supernova_candidates
Tiengo, A. (2021). "New X-ray observations of the hot subdwarf binary HD 49798/RX J0648.0–4418". Monthly Notices of the Royal Astronomical Society. 504:
List_of_white_dwarfs
(30 May 2023). "Timing the X-ray pulsating companion of the hot subdwarf HD 49798 with NICER". Monthly Notices of the Royal Astronomical Society. 523 (2):
List_of_smallest_known_stars
Stellar classification
Subdwarfs HD 49798 (sdO6p) V846 Arae B (sdO) Kappa1 Apodis B (sdO)
O-type_star
Subdwarf star with spectral type O
magnesium or iron. HD 128220 was studied by Corrado Bartolini HIP 52181 pulsates with a frequency of 1.04 milliHertz. HD 49798 is a carbon poor X-ray
Subdwarf_O_star
Astronomical object emitting X-rays
V Sge where episodes of long low states occur in a cycle of ~400 days. HD 49798 is a subdwarf star that forms a binary system with RX J0648.0-4418. The
Astrophysical_X-ray_source
Comae Berenices B (HD 112313) 1,650 ± 40 2 sdO 8.69 Central star of LoTr 5 Planetary Nebula. Has a G-type companion star. HD 49798 1,700 ± 46 1 sdO6p
List_of_O-type_stars
J0648.1-4419 13.2 1.54 HD 49798 (O6p) LMC X-4 13.5 1.41 Sk-Ph (O7 III-V) OAO 1657-415 37.7 10.4 (Ofpe/WN9) Vela X-1 283 8.96 HD 77581 (B0.5 Ib) 1E 1145
List_of_X-ray_pulsars
White dwarf in the constellation Puppis
(J) 3116 (N) 3131 3226 3243 (h2) 3259 3270 (q) 3282 (w) 3328 HD 44594 48265 (Nosaxa) 49798 50499 53680 61005 (Moth) 63399 63754 64568 66051 70642 71334
WD_0816−310
Star in the constellation Puppis
Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts
Nu_Puppis
Variable Star in the constellation Puppis
an asterism consisting of ο Puppis, δ Canis Majoris, η Canis Majoris, HD 63032, HD 65456, k Puppis, ε Canis Majoris, κ Canis Majoris and π Puppis. Consequently
Omicron_Puppis
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