Coord 2000 | 18152-2023 | Discov num | SNA 83 | Comp | AE | Coord arcsec 2000 | 18 15 12.97 -20 23 16.7 | ||||
Date first | 2012 | Date last | 2012 | Obs | 1 | ||||||
Pa first | 242 | Pa last | 242.3 | P.A. Now (θ) | 242.3° | ||||||
Sep first | 7.3 | Sep last | 7.34 | Sep. Now (ρ) | 7.34" | ||||||
Mag pri | 5.88 | Mag sec | 13.20 | delta mag (ΔM) | 7.32 | Spectral class | O9.5II (blue) | ||||
Pri motion ra | +005 | Sec motion ra | |||||||||
Pri motion dec | -003 | Sec motion dec | |||||||||
Notes | N K (See Notes, K-band or other infrared magnitudes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 186544 | 18 15 13 -20 23 17 | CHR 255 Aa,Ab | 2019 | 9 | 156 | 0.1 | 6.50 | 6.90 | 0.40 | |||
Show | 186544 | 18 15 13 -20 23 17 | BU 286 AB | 2015 | 12 | 216 | 6.1 | 5.95 | 13.00 | 7.05 | |||
Show | 16 Sgr | 186544 | 18 15 13 -20 23 17 | SNA 83 AC | 2012 | 1 | 27 | 5.9 | 5.88 | 13.43 | 7.55 | ||
Show | 186544 | 18 15 13 -20 23 17 | SNA 83 AD | 2012 | 1 | 281 | 6.5 | 5.88 | 13.04 | 7.16 | |||
Show | 186544 | 18 15 13 -20 23 17 | SNA 83 AE | 2012 | 1 | 242 | 7.3 | 5.88 | 13.20 | 7.32 | <=== |
Constellation | Sagittarius | SAO | 186544 | HIP | 89440 | Tycho2 | 6272-00089-1 | ||||
Gaia DR2 | 4094031138050641408 | HD | 167263 | HR | 6823 | GC | 24895 | ||||
ADS | 11191 | BD | BD-20 5055 | Flamsteed | 16 Sagittarii | Flamsteed name | 16 Sgr | ||||
Distance | 2325.58 | Distance ly | 7586.04 |
discov_num | notes | refcode |
BU 286 | 16 Sgr. A is a spectroscopic binary. | |
CHR 255 | Aa,Ab: Garmany et al. (1980 ApJ 242, 1063) observed a smoothly-varying | |
velocity indicating that the A component is probably a single-lined | ||
binary with a period of 11 d. | ||
Lindroos (1985) provided the classification of the B component and | Lnd1985 | |
determines a distance of 1.2 kpc. | Msn1998a | |
SNA 83 | 16 Sgr. SB. See discussion of system by Sana et al. 2014). | Sna2014 |
refcode | metd | author | reference |
Lnd1985 | - | Lindroos, K.P. | 1985A&AS...60..183L |
Lnd1985 | A&AS 60, 183, 1985 | ||
Msn1998a | Sc j | Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G., | 1998AJ....115..821M |
Msn1998a | ten Brummelaar, T.A., & McAlister, H.A. | ||
Msn1998a | AJ 115, 821, 1998 | ||
Sna2014 | Kv j | Sana, H., LeBouquin, J.-B., Lacour, S., Berger, J.-P., Duvert, G., Gauchet, L., | 2014ApJS..215...15S |
Sna2014 | +A | Norris, B., Olofsson, J., Pickel, D., Zins, G., Absil, O., de Koter, A., | |
Sna2014 | Kratter, K., Schnurr, O., & Zinnecker, H. | ||
Sna2014 | ApJS 215, 15, 2014 | ||
Sna2014 | (NACO companions in Table 6 assumed physical if quoted probability of spurious | ||
Sna2014 | detection <10%, optical if >90%, otherwise indeterminate) |
idgroup | discov | author |
1 | BU | Burnham, S.W. (BU 1 - 81) |
179 | CHR | Center for High Ang. Res. Astronomy (speckle interferometry systems) |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
18152-2023 | SNA 83 | AE | 2012 | 1 | 242 | 7.3 | 5.88 | 13.20 | O9.5II-II | N K | 181512.97-202316.7 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | Ab | B | C | D | |
Ab | pa=157.7° sep=0.09" | ||||
B | pa=214.5° sep=5.95" | pa=215.3° sep=5.90" | |||
C | pa=25.7° sep=5.81" | pa=25.1° sep=5.88" | pa=30.2° sep=11.73" | ||
D | pa=281.5° sep=6.12" | pa=282.2° sep=6.17" | pa=336.8° sep=6.66" | pa=244.7° sep=9.42" | |
E | pa=240.7° sep=6.98" | pa=241.5° sep=6.97" | pa=298.7° sep=3.10" | pa=224.9° sep=12.21" | pa=181.2° sep=4.63" |
Coord arcsec 2000 | 181512.97-202316.7 | Mag | 5.95 | Spectral class | O9IV (blue) | PmRA | 5.00 | ||||
PmDE | -3.0 | SAO | 186544 | HIP | 89440 | Tycho2 | 6272-00089-1 | ||||
HD | 167263 | HR | 6823 | GC | 24895 | ADS | 11191 | ||||
BD | BD-20 5055 | Flamsteed | 16 Sagittarii | Flamsteed name | 16 Sgr |
Tycho2 | 6272-00089-1 | Pflag | X | RAmdeg | DEmdeg | ||||||
PmRA | PmDE | E RAmdeg | E DEmdeg | ||||||||
E pmRA | E pmDE | EpRAm | EpDEm | ||||||||
Num | Q RAmdeg | Q DEmdeg | Q pmRA | ||||||||
Q pmDE | BTmag | 5.936 | E BTmag | 0.014 | VTmag | 5.954 | |||||
E VTmag | 0.010 | Prox | 999 | TYC | T | HIP | 89440 | ||||
CCDM | RAdeg | 273.80404000 | DEdeg | -20.38797056 | EpRA 1990 | 1.84 | |||||
EpDE 1990 | 1.76 | E RAdeg | 3.4 | E DEdeg | 3.9 | Posflg | |||||
Corr | 0.0 |
SAO | 186544 | DelFlag | RA1950 | PmRA1950 | -0.0002 | ||||||
DE1950 | PmDE1950 | 0 | Vmag | 6 | SpType | B1 | |||||
Double code | Source | 70 | CatNum | 24895 | DM | BD-20 5055 | |||||
DMcomp | BDsup | HD | 167263 | M HD | 0 | ||||||
GC | 24895 | RA1950rad | 4.76579364 | DE1950rad | -0.35612778 | PmRA2000 | -0.0001 | ||||
PmDE2000 | 0.001 |
Catalog | H | HIP | 89440 | Proxy | RAhms | 18 15 12.97 | |||||
DEdms | -20 23 16.7 | Vmag | 5.96 | VarFlag | R Vmag | H | |||||
RAdeg | 273.804 | DEdeg | -20.388 | AstroRef | Plx | -0.22 | |||||
CCDM | 18152-2023 | N CCDM | I | Nsys | 1 | Ncomp | 1 | ||||
MultFlag | Source | Qual | M HIP | ||||||||
Theta | Rho | HD | 167263 | BD | BD-20 5055 | ||||||
CD | CP | Dm number | -20 5055 | VIred | 0.13 | ||||||
SpType | B0.5Ib/II | R SpType | Coord arcsec 2000 | 181512.97-202316.7 |
HIP | 89440 | Sn | 5 | So | 0 | Nc | 1 | ||||
RArad | 4.7787819707 | DErad | -0.3558371945 | Plx | -0.43 | PmRA | -0.01 | ||||
PmDE | -1.38 | E RArad | 0.32 | E DErad | 0.23 | E Plx | 0.39 | ||||
E pmRA | 0.46 | E pmDE | 0.3 | Hpmag | 5.9569 | E Hpmag | 0.001 | ||||
SHp | 0.006 | VA | 0 | BV | -0.023 | E BV | 0.005 | ||||
VI | 0 |
Ccdm | 18152-2023 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 1.04 | DDEs | -14.4 | ||||||
R dRAs | 41 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 6.0 | Sp | B1 | PmNote | $ | ||||
PmRA | 0 | PmDE | 1 | Dm number | -20 5055 | Cat1 | BD | ||||
Name2 | 186544 | Cat2 | SAO | HD | 167263 | M HD | |||||
ADS BDS | A11191 | M ADS BDS | N IDS | IDS | 18093S2025A | ||||||
HIC | 89440 |
Coord arcsec 2000 | 181512.97-202316.8 | Mag | 6.9 | Calc delta mag | 0.4 | Calc coord | yes |
Coord arcsec 2000 | 181512.73-202321.6 | Mag | 13 | Calc delta mag | 6.5 | Calc coord | yes |
Ccdm | 18152-2023 | RComp | Comp | B | Note1 | ||||||
Note2 | Discov num | BU 286 | DRAs | 0.82 | DDEs | -20.2 | |||||
R dRAs | 90 | Year | 1878 | Theta | 216 | Rho | 6.0 | ||||
Obs | 6 | Vmag | 13.0 | Sp | PmNote | $ | |||||
PmRA | 6 | PmDE | -7 | Dm number | Cat1 | ||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | A11191 | M ADS BDS | N IDS | IDS | 18093S2025B | ||||||
HIC | 89440 |
Coord arcsec 2000 | 181513.15-202311.5 | Mag | 13.43 | Calc delta mag | 6.93 | Calc coord | yes |
Coord arcsec 2000 | 181512.54-202315.5 | Mag | 13.04 | Calc delta mag | 6.54 | Calc coord | yes |
Coord arcsec 2000 | 181512.54-202320.1 | Mag | 13.2 | Calc delta mag | 6.7 | Calc coord | yes |