21504+3927 HO 170 (HD 207782)
21h 50m 26.80s +39° 26' 31.8" P.A. 256.00 sep 0.3 mag 7.92,10.05 Sp A3 dist. 184.84 pc (602.95 l.y.)
| Coord 2000 | 21504+3927 | Discov num | HO 170 | Comp | Coord arcsec 2000 | 21 50 26.80 +39 26 31.8 | |||||
| Date first | 1886 | Date last | 2011 | Obs | 41 | ||||||
| Pa first | 162 | Pa last | 255.8 | P.A. Now (θ) | 255.8° | ||||||
| Sep first | 0.3 | Sep last | 0.283 | Sep. Now (ρ) | 0.283" | ||||||
| Mag pri | 7.92 | Mag sec | 10.05 | delta mag (ΔM) | 2.13 | Spectral class | A3 (white) | ||||
| Pri motion ra | +009 | Sec motion ra | +009 | ||||||||
| Pri motion dec | -012 | Sec motion dec | -012 | ||||||||
| Notes | |||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Name | HD 207782 | Constellation | Cygnus | SAO | 71756 | HIP | 107808 | ||||
| Tycho2 | 3189-01854-1 | HD | 207782 | BD | BD+38 4618 | Distance | 184.84 | ||||
| Distance ly | 602.95 |
WDS 21504+3927 HO 170 (HD 207782) : NOTES
REFERENCES
| refcode | metd | author | reference |
| Ho_1883 | Ma j | Hough, G.W. | 1883MNRAS..43..371H |
| Ho_1883 | MNRAS 43, 371, 1883 (data also in Ho_1890) | 1890AN....125....1H | |
| Ho_1884 | Ma j | Hough, G.W. | 1884MNRAS..44..365H |
| Ho_1884 | MNRAS 44, 365, 1884 (data also in Ho_1890) | 1890AN....125....1H | |
| Ho_1885 | Ma j | Hough, G.W. | 1885MNRAS..45..417H |
| Ho_1885 | MNRAS 45, 417, 1885 (data also in Ho_1890) | 1890AN....125....1H | |
| Ho_1886 | Ma j | Hough, G.W. | 1886MNRAS..46..393H |
| Ho_1886 | MNRAS 46, 393, 1886 (data also in Ho_1890) | 1890AN....125....1H | |
| Ho_1887 | Ma j | Hough, G.W. | 1887AN....116..273H |
| Ho_1887 | AN 116, 273, 1887 | ||
| Ho_1890 | Ma j | Hough, G.W. | 1890AN....125....1H |
| Ho_1890 | AN 125, 1, 1890 | ||
| Ho_1890b | Ma j | Hough, G.W. | 1890AJ......9..177H |
| Ho_1890b | AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) | 1890AN....125....1H | |
| Ho_1894a | Ma - | Hough, G.W. | 1894MNRAS..54..251H |
| Ho_1894a | MNRAS 54, 251, 1894 | ||
| Ho_1894b | Ma j | Hough, G.W. (HO 304 - 490) | 1894AN....135..281H |
| Ho_1894b | AN 135, 281, 1894 | ||
| Ho_1894c | Ma - | Hough, G.W. (measure by Dembowski, H.) | 1894AN....135..281H |
| Ho_1894c | AN 135, 281, 1894 | ||
| Ho_1899a | Ma j | Hough, G.W. | 1899AN....149..65H |
| Ho_1899a | AN 149, 65, 1899 | ||
| Ho_1899b | Ma - | Hough, G.W. (measure by Burnham, S.W.) | 1899AN....149..65H |
| Ho_1899b | AN 149, 65, 1899 | ||
| Ho_1907 | Ma - | Hough, G.W. | 1907PFAO....3c...1D |
| Ho_1907 | Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle) | ||
| Ho_1932A | Ma - | Hough, G.W. | 1932QB821.A43...... |
| Ho_1932A | cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox) |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21504+3927 | HO 170 | 2007 | 41 | 251 | 0.3 | 7.92 | 10.05 | A3 | D | 215026.80+392631.8 | |
| 21504+3927 | HO 170 | 2011 | 41 | 256 | 0.3 | 7.92 | 10.05 | A3 | 215026.80+392631.8 |
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WDS 21504+3927 HO 170 (HD 207782) : VISUAL OBSERVATIONS REPORTS
WDS 21504+3927 HO 170 (HD 207782) : MEASURES
WDS 21504+3927 (HD 207782) : VIRTUAL EYEPIECE
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WDS 21504+3927 (HD 207782) : ALADIN DSS IMAGE @
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