Coord 2000 | 21215+5434 | Discov num | ROE 91 | Comp | AC | Coord arcsec 2000 | 21 21 29.91 +54 33 27.8 | ||||
Date first | 1915 | Date last | 2017 | Obs | 6 | ||||||
Pa first | 189 | Pa last | 187.4 | P.A. Now (θ) | 187.4° | ||||||
Sep first | 49.3 | Sep last | 47.5 | Sep. Now (ρ) | 47.5" | ||||||
Mag pri | 11.61 | Mag sec | 13.46 | delta mag (ΔM) | 1.85 | Spectral class | |||||
Pri motion ra | -004 | Sec motion ra | -011 | ||||||||
Pri motion dec | -020 | Sec motion dec | -009 | ||||||||
Notes |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 21 21 30 +54 33 28 | ROE 91 AB | 2015 | 7 | 250 | 4.9 | 11.90 | 12.60 | 0.70 | ||||
Show | 21 21 30 +54 33 28 | ROE 91 AC | 2017 | 6 | 187 | 47.5 | 11.61 | 13.46 | 1.85 | <=== | |||
Show | 21 21 30 +54 33 28 | ROE 91 AD | 2017 | 5 | 275 | 74.4 | 11.61 | 12.30 | 0.69 | ||||
Show | 21 21 30 +54 33 28 | ROE 91 AE | 2015 | 5 | 256 | 82.1 | 11.61 | 13.22 | 1.61 |
Constellation | Cygnus | Gaia DR2 | 2176147817365487360 |
refcode | metd | author | reference |
Roe1908 | Ma - | Roe, E.D. | 1908AN....178..169R |
Roe1908 | AN 178, 169, 1908 | ||
Roe1909 | Ma - | Roe, E.D. | 1909AN....181..285R |
Roe1909 | AN 181, 285, 1909 | ||
Roe1910a | Ma - | Roe, E.D. | 1910AJ.....26...93R |
Roe1910a | AJ 26, 93, 1910 | ||
Roe1910b | Ma j | Roe, E.D. | ................... |
Roe1910b | Journal Astronomique 1, no. 4, 25, 1910 | ||
Roe1910c | Ma - | Roe, E.D. | 1910AN....183..197R |
Roe1910c | AN 183, 197, 1910 | ||
Roe1910d | Ma j | Roe, E.D. | 1910PA.....18..354R |
Roe1910d | Popular Astronomy 18, 354, 1910 | ||
Roe1910e | Ma j | Roe, E.D. | 1910PA.....18..554R |
Roe1910e | Popular Astronomy 18, 554, 1910 | ||
Roe1911a | Ma - | Roe, E.D. | 1911AN....187...39R |
Roe1911a | AN 187, 39, 1911 | ||
Roe1911b | Ma - | Roe, E.D. | 1911AN....188..373R |
Roe1911b | AN 188, 373, 1911 | ||
Roe1911c | Ma - | Roe, E.D. | 1911AN....190..137R |
Roe1911c | AN 190, 137, 1911 | ||
Roe1911d | Ma j | Roe, E.D. | 1911PA.....19..383R |
Roe1911d | Popular Astronomy 19, 383, 1911 | ||
Roe1914 | Ma j | Roe, E.D. | 1914AN....199..169R |
Roe1914 | AN 199, 169, 1914 | ||
Roe1915 | Ma - | Roe, E.D. | 1915AN....202..99R |
Roe1915 | AN 202, 99, 1915 | ||
Roe1917 | Ma j | Roe, E.D. | 1917AN....204...21R |
Roe1917 | AN 204, 21, 1917 | ||
Roe1918 | Ma - | Roe, E.D. | 1918AJ.....31..149R |
Roe1918 | AJ 31, 149, 1918 | ||
Roe1919a | Ma j | Roe, E.D. | 1919AJ.....32....6R |
Roe1919a | AJ 32, 6, 1919 | ||
Roe1919b | Ma j | Roe, E.D. | 1919AJ.....32...25R |
Roe1919b | AJ 32, 25, 1919 | ||
Roe1932A | - | Roe, E.D. | 1932QB821.A43...... |
Roe1932A | cited in ADS (Aitken Double Star Cat.), 1932 |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
21215+5434 | ROE 91 | AC | 1915 | 1 | 189 | 49.3 | 9.80 | 10.00 | 212129.72+543327.6 | ||
21215+5434 | ROE 91 | AC | 1999 | 2 | 188 | 47.7 | 11.90 | 13.46 | D | 212129.91+543327.8 | |
21215+5434 | ROE 91 | AC | 2003 | 3 | 188 | 47.8 | 11.90 | 13.46 | D | 212129.91+543327.8 | |
21215+5434 | ROE 91 | AC | 2012 | 4 | 188 | 47.6 | 11.61 | 13.46 | 212129.91+543327.8 | ||
21215+5434 | ROE 91 | AC | 2017 | 6 | 187 | 47.5 | 11.61 | 13.46 | 212129.91+543327.8 |
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 | B | C | D | |
B | pa=237.5° sep=3.16" | |||
C | pa=184.3° sep=47.24" | pa=181.1° sep=45.41" | ||
D | pa=278.4° sep=43.45" | pa=281.3° sep=41.12" | pa=323.6° sep=66.44" | |
E | pa=246.0° sep=50.47" | pa=246.5° sep=47.35" | pa=302.0° sep=50.16" | pa=186.6° sep=27.09" |
Coord arcsec 2000 | 212129.91+543327.8 | Mag | 11.9 | PmRA | -4.00 | PmDE | -20.0 |
Coord arcsec 2000 | 212129.60+543326.1 | Mag | 12.6 | PmRA | -150.00 | PmDE | -55.0 | ||||
Calc delta mag | 0.7 | Calc coord | yes |
Coord arcsec 2000 | 212129.50+543240.7 | Mag | 13.46 | PmRA | -11.00 | PmDE | -9.0 | ||||
Calc delta mag | 1.56 | Calc coord | yes |
Coord arcsec 2000 | 212124.97+543334.2 | Mag | 12.3 | PmRA | 1.00 | PmDE | 7.0 | ||||
Calc delta mag | 0.4 | Calc coord | yes |
Coord arcsec 2000 | 212124.61+543307.2 | Mag | 13.22 | PmRA | 4.00 | PmDE | 5.0 | ||||
Calc delta mag | 1.32 | Calc coord | yes |