Coord 2000 | 16540-4148 | Discov num | SNA 51 | Comp | Fa,Fb | Coord arcsec 2000 | 16 54 03.58 -41 47 29.9 | ||||
Date first | 2011 | Date last | 2014 | Obs | 16 | ||||||
Pa first | 46 | Pa last | 54.2 | P.A. Now (θ) | 54.2° | ||||||
Sep first | 0.0 | Sep last | 0.004 | Sep. Now (ρ) | 0.004" | ||||||
Mag pri | 6.30 | Mag sec | 8.30 | delta mag (ΔM) | 2 | Spectral class | O6Ib (blue) | ||||
Pri motion ra | -002 | Sec motion ra | |||||||||
Pri motion dec | -009 | Sec motion dec | |||||||||
Notes | N V K (See Notes, Proper motion indicates physical, K-band or other infrared magnitudes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 227377 | 16 54 02 -41 48 23 | SNA 51 Aa,Ab | 2011 | 1 | 153 | 0.0 | 5.10 | 7.00 | 1.90 | |||
Show | HD 152234 | 227377 | 16 54 02 -41 48 23 | B 1833 AB | 2006 | 8 | 75 | 0.5 | 5.65 | 7.92 | 2.27 | ||
Show | 227377 | 16 54 02 -41 48 23 | B 1833 AC | 2015 | 2 | 99 | 5.4 | 5.65 | 13.80 | 8.15 | |||
Show | 227377 | 16 54 02 -41 48 23 | SEE 293 AD | 1999 | 4 | 127 | 19.1 | 5.66 | 13.70 | 8.04 | |||
Show | 227377 | 16 54 02 -41 48 23 | SEE 293 AE | 1999 | 5 | 281 | 20.5 | 5.66 | 13.00 | 7.34 | |||
Show | 227377 | 16 54 02 -41 48 23 | JC 23 AF | 2018 | 15 | 19 | 56.7 | 5.65 | 6.56 | 0.91 | |||
Show | 227380 | 16 54 04 -41 47 30 | SNA 51 Fa,Fb | 2014 | 16 | 54 | 0.0 | 6.30 | 8.30 | 2.00 | Y | <=== | |
Show | 227380 | 16 54 04 -41 47 30 | SEE 294 FG | 2015 | 5 | 47 | 6.7 | 6.59 | 13.00 | 6.41 | |||
Show | 227380 | 16 54 04 -41 47 30 | HJ 4892 FH | 2015 | 13 | 300 | 8.8 | 6.59 | 9.60 | 3.01 |
Constellation | Scorpius | SAO | 227380 | Tycho2 | 7876-02254-1 | Gaia DR2 | 5966510229078336768 | ||||
HD | 152233 |
Period (P) | 871.3d (2.39y) | ± 4.6 | Periastron (T) | 56276d (2012.954y) | ± 11 | Semi-major axis (a) | 4.15m | ± 0.09 |
Eccentricity (e) | 0.543 | ± 0.011 | Inclination (i) | 84.7° | ± 1.5 | Longitude of periastron (ω) | 192° | ± 5.1 |
Node (Ω) | 49.4° | ± 1 | Notes | n | Reference | LeB2017 | ||
Equinox | Last observation | Grade | 5 | (1=Definitive, 9=Indet.) |
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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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