18489+1615 STF 2400 A,BC
18h 48m 54.88s +16° 15' 24.4" P.A. 160.00 sep 11.0 mag 8.08,10.20 Sp G0 dist. 128.7 pc (419.82 l.y.)
| Coord 2000 | 18489+1615 | Discov num | STF2400 | Comp | A,BC | Coord arcsec 2000 | 18 48 54.88 +16 15 24.4 | ||||
| Date first | 1829 | Date last | 2016 | Obs | 34 | ||||||
| Pa first | 305 | Pa last | 160.1 | P.A. Now (θ) | 160.1° | ||||||
| Sep first | 3.0 | Sep last | 11.034 | Sep. Now (ρ) | 11.034" | ||||||
| Mag pri | 8.08 | Mag sec | 10.20 | delta mag (ΔM) | 2.12 | Spectral class | G0 (yellow) | ||||
| Pri motion ra | -033 | Sec motion ra | |||||||||
| Pri motion dec | +064 | Sec motion dec | |||||||||
| Notes | N (See Notes) | ||||||||||
18489+1615 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | HD 174224 | 18 48 55 +16 15 24 | STF 2400 AB | 2014 | 41 | 159 | 9.7 | 8.08 | 11.10 | 3.02 | |||
| Show | 18 48 55 +16 15 24 | STF 2400 A,BC | 2016 | 34 | 160 | 11.0 | 8.08 | 10.20 | 2.12 | <=== | |||
| Show | 18 48 55 +16 15 24 | STF 2400 AC | 2015 | 31 | 161 | 10.9 | 8.08 | 10.60 | 2.52 | ||||
| Show | 104127 | 18 48 55 +16 15 24 | STF 2400 AD | 1900 | 4 | 157 | 0.4 | 8.08 | |||||
| Show | 18 48 55 +16 15 15 | STF 2400 BC | 2016 | 35 | 201 | 1.0 | 11.10 | 10.60 | 0.50 |
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Hercules | HIP | 92317 | Tycho2 | 1584-01984-1 | Gaia DR2 | 4510996390003527808 | ||||
| HD | 174224 | BD | BD+16 3622 | Distance | 128.7 | Distance ly | 419.82 |
WDS 18489+1615 STF 2400 A,BC : NOTES
| discov_num | notes | refcode |
| STF2400 | AC: Mt. Wilson spectra are F5s for A and A4n for C. | |
| AD: D not seen in 1901 and 1919. | ||
| BC: Additional notes may be found in Burnham (1894). | Bu_1894 | |
| AB, AC: Rectilinear solutions by Cvetkovic (2015). | Cve2015b | |
| A,BC: Rectilinear solution by Cvetkovic et al. (2016). | Cve2016 |
REFERENCES
| refcode | metd | author | reference |
| Bu_1894 | Ma j | Burnham, S.W. | 1894PLicO...2....3B |
| Bu_1894 | Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a) | 1893AN....131..329B | |
| Cve2015b | orb - | Cvetkovic, Z. | 2015IAUDS.187....1C |
| Cve2015b | +lin | Inf. Circ. 187, 1, 2015 | |
| Cve2016 | C j | Cvetkovic, Z., Pavlovic, R. & Boeva, S. | 2016AJ....151...58C |
| Cve2016 | +lin | AJ 151, 58, 2016 |
DISCOVERER
| idgroup | discov | author |
| 1 | STF | Struve, F.G.W. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 18489+1615 | STF2400 | A,BC | 2008 | 29 | 161 | 10.4 | 8.08 | 10.20 | G0 | N D | 184854.88+161524.4 |
| 18489+1615 | STF2400 | A,BC | 2012 | 30 | 161 | 10.8 | 8.08 | 10.20 | G0 | N D | 184854.88+161524.4 |
| 18489+1615 | STF2400 | A,BC | 2016 | 34 | 161 | 11.0 | 8.08 | 10.20 | G0 | NL | 184854.88+161524.4 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 18489+1615 STF 2400 A,BC : VISUAL OBSERVATIONS REPORTS
WDS 18489+1615 STF 2400 A,BC : MEASURES
WDS 18489+1615 : VIRTUAL EYEPIECE
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WDS 18489+1615 : ALADIN DSS IMAGE @
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