Coord 2000 | 20239-4225 |
Discov num | BU 763 |
Comp | AB |
Coord arcsec 2000 | 20 23 53.17 -42 25 22.2 |
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Date first | 1874 |
Date last | 2017 |
Obs | 54 |
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Pa first | 225 |
Pa last | 174 |
P.A. Now (θ) | 354.6° |
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Sep first | 1.5 |
Sep last | 0.4 |
Sep. Now (ρ) | 0.44" |
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Mag pri | 5.67 |
Mag sec | 7.25 |
delta mag (ΔM) | 1.58 |
Spectral class | A5V (white) |
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Pri motion ra | -006 |
Sec motion ra | -006 |
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Pri motion dec | +024 |
Sec motion dec | +024 |
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Notes |
Show | name | SAO | coord_2000 | discov# | comp | first | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | Kap2 Sgr | 230184 | 20239-4225 | BU 763 | AB | 1874 | 2017 | 54 | 355 | 0.4 | 5.67 | 7.25 | 1.58 | Y | <=== |
Show | 230184 | 20239-4225 | I 1626 | AC | 1925 | 1998 | 2 | 268 | 18.6 | 5.67 | 14.30 | 8.63 | |||
Show | 230184 | 20239-4225 | SEE 511 | AD | 1897 | 2000 | 4 | 219 | 29.8 | 5.67 | 14.00 | 8.33 |
Precise pa | 174 |
Precise sep | 0.414 |
Name | Kap2 Sgr |
Constellation | Sagittarius |
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SAO | 230184 |
HIP | 100591 |
Tycho2 | 7957-01410-1 |
Gaia DR2 | 21813065856 |
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HD | 193807 |
HR | 7787 |
GC | 28341 |
CD | CD-4214847 |
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CP | CP-42 9068 |
Bayer | Kappa 2 Sagittarii |
Bayer name | Kap2 Sgr |
Distance | 95.51 |
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Distance ly | 311.55 |
last precise pa | 174 |
last precise sep | 0.414 |
Period (P) | 700y | Periastron (T) | 1912y | Semi-major axis (a) | 2.032a | |||
Eccentricity (e) | 0.401 | Inclination (i) | 80° | Longitude of periastron (ω) | 177.3° | |||
Node (Ω) | 40.7° | Note | Grade | 5 | (1=Definitive, 9=Indet.) | |||
Equinox | 2000 | Last observation | 1992 |
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 |
20239-4225 | BU 763 | AB | 1992 | 47 | 268 | 0.4 | 5.93 | 7.25 | A5V | NOD | 202353.19-422522.5 |
20239-4225 | BU 763 | AB | 2008 | 48 | 317 | 0.2 | 5.93 | 7.25 | A5V | NOD | 202353.19-422522.5 |
20239-4225 | BU 763 | AB | 2013 | 50 | 345 | 0.3 | 5.67 | 7.25 | A5V | NO | 202353.17-422522.2 |
20239-4225 | BU 763 | AB | 2016 | 53 | 352 | 0.4 | 5.67 | 7.25 | A5V | NO | 202353.17-422522.2 |
20239-4225 | BU 763 | AB | 2017 | 54 | 174 | 0.4 | 5.67 | 7.25 | A5V | NO | 202353.17-422522.2 |