Coord 2000 | 19490+1909 |
Discov num | AGC 11 |
Comp | AB |
Coord arcsec 2000 | 19 48 58.65 +19 08 31.1 |
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Date first | 1875 |
Date last | 2007 |
Obs | 260 |
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Pa first | 137 |
Pa last | 182 |
P.A. Now (θ) | 152.6° |
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Sep first | 0.4 |
Sep last | 0.2 |
Sep. Now (ρ) | 0.21" |
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Mag pri | 5.64 |
Mag sec | 6.04 |
delta mag (ΔM) | 0.4 |
Spectral class | A1V (white) |
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Pri motion ra | +019 |
Sec motion ra | |||||||||
Pri motion dec | +027 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Zet Sge | 105298 | 19490+1909 | AGC 11 | AB | 1875 | 2007 | 260 | 153 | 0.2 | 5.64 | 6.04 | 0.40 | Y | <=== |
Show | 105298 | 19490+1909 | STF2585 | AB,C | 1819 | 2016 | 131 | 311 | 8.3 | 5.04 | 9.01 | 3.97 | |||
Show | 105298 | 19490+1909 | STF2585 | AB,D | 1895 | 2005 | 10 | 246 | 76.0 | 5.04 | 11.00 | 5.96 |
Precise pa | 182.3 |
Precise sep | 0.165 |
Name | Zet Sge |
Constellation | Sagitta |
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SAO | 105298 |
HIP | 97496 |
Tycho2 | 1623-02647-1 |
HD | 187362 |
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HR | 7546 |
GC | 27431 |
ADS | 12973 |
BD | BD+18 4254 |
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Bayer | Zeta Sagittae |
Bayer name | Zet Sge |
Flamsteed | 8 Sagittae |
Flamsteed name | 8 Sge |
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Distance | 78.19 |
Distance ly | 255.06 |
last precise pa | 182.3 |
last precise sep | 0.165 |
Period (P) | 8487.9d (23.24y) | ± 4.9 | Periastron (T) | 44199.6m (1979.892y) | ± 5.9 | Semi-major axis (a) | 0.13605a | ± 0.00044 |
Eccentricity (e) | 0.7948 | ± 0.0019 | Inclination (i) | 132.33° | ± 0.41 | Longitude of periastron (ω) | 355.3° | ± 1 |
Node (Ω) | 340.97° | ± 0.68 | Note | Grade | 1 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation | 2007 |
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 |
19490+1909 | AGC 11 | AB | 2001 | 243 | 117 | 0.1 | 5.64 | 6.04 | A1V | NOD | 194858.65+190831.1 |
19490+1909 | AGC 11 | AB | 2004 | 246 | 28 | 0.1 | 5.64 | 6.04 | A1V | NOD | 194858.65+190831.1 |
19490+1909 | AGC 11 | AB | 2007 | 248 | 184 | 0.2 | 5.64 | 6.04 | A1V | NOD | 194858.65+190831.1 |