Coord 2000 | 19474+1832 |
Discov num | BLA 6 |
Comp | Coord arcsec 2000 | 19 47 23.27 +18 32 03.3 |
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Date first | 1975 |
Date last | 1991 |
Obs | 22 |
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Pa first | 137 |
Pa last | 242 |
P.A. Now (θ) | 207.3° |
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Sep first | 0.0 |
Sep last | 0.1 |
Sep. Now (ρ) | 0.03" |
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Mag pri | 4.32 |
Mag sec | 4.95 |
delta mag (ΔM) | 0.63 |
Spectral class | M2II+B0V (red/blue-white) |
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Pri motion ra | +007 |
Sec motion ra | |||||||||
Pri motion dec | +008 |
Sec motion dec | |||||||||
Notes |
Precise pa | 242 |
Precise sep | 0.115 |
Name | Del Sge |
Constellation | Sagitta |
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SAO | 105259 |
HIP | 97365 |
Tycho2 | 1619-03542-1 |
Gaia DR2 | 1824534959598087168 |
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HD | 187076 |
HR | 7536 |
GC | 27391 |
BD | BD+18 4240 |
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Bayer | Delta Sagittae |
Bayer name | Del Sge |
Flamsteed | 7 Sagittae |
Flamsteed name | 7 Sge |
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Distance | 182.15 |
Distance ly | 594.17 |
last precise pa | 242 |
last precise sep | 0.115 |
Period (P) | 10.11y | Periastron (T) | 1979.93y | Semi-major axis (a) | 0.051a | |||
Eccentricity (e) | 0.44 | Inclination (i) | 140° | Longitude of periastron (ω) | 257.7° | |||
Node (Ω) | 170.2° | Note | Grade | 3 | (1=Definitive, 9=Indet.) | |||
Equinox | Last observation |
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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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coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
19474+1832 | BLA 6 | 1991 | 22 | 62 | 0.1 | 4.32 | 4.95 | M2II+A0V | NOD | 194723.27+183203.3 |