Coord 2000 | 19553-0644 |
Discov num | STF2597 |
Comp | AB |
Coord arcsec 2000 | 19 55 19.49 -06 44 04.7 |
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Date first | 1826 |
Date last | 2017 |
Obs | 142 |
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Pa first | 92 |
Pa last | 101 |
P.A. Now (θ) | 99.6° |
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Sep first | 1.9 |
Sep last | 0.6 |
Sep. Now (ρ) | 0.74" |
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Mag pri | 6.94 |
Mag sec | 7.98 |
delta mag (ΔM) | 1.04 |
Spectral class | F2V (yellow-white) |
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Pri motion ra | +030 |
Sec motion ra | |||||||||
Pri motion dec | -062 |
Sec motion dec | |||||||||
Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 143911 | 19553-0644 | STF2597 | AB | 1826 | 2017 | 142 | 100 | 0.7 | 6.94 | 7.98 | 1.04 | Y | <=== | |
Show | 143911 | 19553-0644 | BOW 8 | AC | -1 | -1 | 0 | 6.94 |
Precise pa | 100.8 |
Precise sep | 0.647 |
Constellation | Aquila |
SAO | 143911 |
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HIP | 98038 |
Tycho2 | 5159-02691-1 |
Gaia DR2 | 88186245504 |
HD | 188405 |
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HR | 7599 |
ADS | 13104 |
BD | BD-07 5102 |
Distance | 81.83 |
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Distance ly | 266.93 |
last precise pa | 100.8 |
last precise sep | 0.647 |
Period (P) | 425y | ± 22 | Periastron (T) | 1974.28y | ± 0.23 | Semi-major axis (a) | 1.085a | ± 0.024 |
Eccentricity (e) | 0.9414 | ± 0.002 | Inclination (i) | 103.05° | ± 0.84 | Longitude of periastron (ω) | 327.9° | ± 1.7 |
Node (Ω) | 264.03° | ± 0.77 | Note | Grade | 4 | (1=Definitive, 9=Indet.) | ||
Equinox | 2000 | Last observation |
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 |
19553-0644 | STF2597 | AB | 2006 | 133 | 102 | 0.5 | 6.94 | 7.98 | F2V | NOD | 195519.49-064404.7 |
19553-0644 | STF2597 | AB | 2008 | 135 | 101 | 0.6 | 6.94 | 7.98 | F2V | NOD | 195519.49-064404.7 |
19553-0644 | STF2597 | AB | 2010 | 138 | 101 | 0.6 | 6.94 | 7.98 | F2V | NOD | 195519.49-064404.7 |
19553-0644 | STF2597 | AB | 2014 | 139 | 99 | 0.7 | 6.94 | 7.98 | F2V | NO | 195519.49-064404.7 |
19553-0644 | STF2597 | AB | 2017 | 142 | 101 | 0.6 | 6.94 | 7.98 | F2V | NO | 195519.49-064404.7 |