| Coord 2000 | 19531-2528 |
Discov num | B 454 |
Comp | Coord arcsec 2000 | 19 53 08.30 -25 27 41.2 |
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| Date first | 1926 |
Date last | 2017 |
Obs | 29 |
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| Pa first | 338 |
Pa last | 337 |
P.A. Now (θ) | 337° |
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| Sep first | 0.3 |
Sep last | 0.3 |
Sep. Now (ρ) | 0.3" |
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| Mag pri | 8.71 |
Mag sec | 8.87 |
delta mag (ΔM) | 0.16 |
Spectral class | F8V (yellow-white) |
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| Pri motion ra | +008 |
Sec motion ra | |||||||||
| Pri motion dec | -037 |
Sec motion dec | |||||||||
| Notes | |||||||||||
| Precise pa | 336.8 |
Precise sep | 0.266 |
Constellation | Sagittarius |
SAO | 188673 |
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| HIP | 97851 |
Tycho2 | 6895-01740-1 |
HD | 187858 |
ADS | 13048 |
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| CD | CD-2514403 |
CP | CP-25 6930 |
Distance | 89.13 |
Distance ly | 290.74 |
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| last precise pa | 336.8 |
last precise sep | 0.266 |
| Period (P) | 47.21y | Periastron (T) | 2006.84y | Semi-major axis (a) | 0.196a | |||
| Eccentricity (e) | 0.764 | Inclination (i) | 78.8° | Longitude of periastron (ω) | 32° | |||
| Node (Ω) | 153.8° | Note | Grade | 3 | (1=Definitive, 9=Indet.) | |||
| Equinox | 2000 | Last observation | 2009 |
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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 |
| 19531-2528 | B 454 | 1991 | 25 | 345 | 0.2 | 8.71 | 8.87 | F8V | NO | 195308.30-252741.2 | |
| 19531-2528 | B 454 | 2009 | 29 | 324 | 0.1 | 8.71 | 8.87 | F8V | NO | 195308.30-252741.2 | |
| 19531-2528 | B 454 | 2014 | 28 | 336 | 0.2 | 8.71 | 8.87 | F8V | NO | 195308.30-252741.2 | |
| 19531-2528 | B 454 | 2017 | 29 | 337 | 0.3 | 8.71 | 8.87 | F8V | NO | 195308.30-252741.2 |