Coord 2000 | 13198+4747 | Discov num | HU 644 | Comp | AB | Coord arcsec 2000 | 13 19 45.58 +47 46 41.1 | ||||
Date first | 1904 | Date last | 2019 | Obs | 150 | ||||||
Pa first | 99 | Pa last | 354.4 | P.A. Now (θ) | 275.7° | ||||||
Sep first | 0.9 | Sep last | 0.086 | Sep. Now (ρ) | 0.901" | ||||||
Mag pri | 9.11 | Mag sec | 9.87 | delta mag (ΔM) | 0.76 | Spectral class | M2V (red) | ||||
Pri motion ra | +226 | Sec motion ra | |||||||||
Pri motion dec | -024 | Sec motion dec | |||||||||
Notes | N O (See Notes, Orbital solution) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 44566 | 13 19 46 +47 46 41 | CHR 193 Aa,Ab | 2019 | 14 | 97 | 0.1 | 9.30 | 11.00 | 1.70 | |||
Show | HD 115953 | 44566 | 13 19 46 +47 46 41 | HU 644 AB | 2019 | 150 | 354 | 0.1 | 9.11 | 9.87 | 0.76 | Y | <=== |
Name | HD 115953 | Constellation | Canes Venatici | SAO | 44566 | HIP | 65026 | ||||
Tycho2 | 3460-02162-1 | Gaia DR2 | 1552921051659352960 | HD | 115953 | ADS | 8862 | ||||
GL | Gl 508A | BD | BD+48 2108 | Distance | 10.71 | Distance ly | 34.94 |
Period (P) | 49.34y | ± 0.2 | Periastron (T) | 1968.13y | ± 0.42 | Semi-major axis (a) | 1.546a | ± 0.005 |
Eccentricity (e) | 0.209 | ± 0 | Inclination (i) | 94.4° | ± 0.1 | Longitude of periastron (ω) | 72.9° | ± 2.1 |
Node (Ω) | 90.9° | ± 0.1 | Notes | n | Reference | Msn2021c | ||
Equinox | Last observation | 2019 | Grade | 2 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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