Coord 2000 | 21161+2951 | Discov num | BWL 56 | Comp | AC | Coord arcsec 2000 | 21 16 05.81 +29 51 50.8 | ||||
Date first | 2011 | Date last | 2012 | Obs | 2 | ||||||
Pa first | 76 | Pa last | 76.5 | P.A. Now (θ) | 76.5° | ||||||
Sep first | 3.6 | Sep last | 3.355 | Sep. Now (ρ) | 3.355" | ||||||
Mag pri | 7.86 | Mag sec | 20.10 | delta mag (ΔM) | 12.24 | Spectral class | M4.0 (red) | ||||
Pri motion ra | +206 | Sec motion ra | |||||||||
Pri motion dec | +035 | Sec motion dec | |||||||||
Notes | N U K (See Notes, Proper motion indicates non-physical, K-band or other infrared magnitudes) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 21 16 06 +29 51 51 | BWL 56 Aa,Ab | 2018 | 5 | 163 | 0.1 | 8.50 | 8.80 | 0.30 | ||||
Show | 21 16 06 +29 51 51 | LDS 1053 AB | 2016 | 12 | 259 | 26.0 | 12.89 | 13.83 | 0.94 | ||||
Show | 21 16 06 +29 51 51 | BWL 56 AC | 2012 | 2 | 77 | 3.4 | 7.86 | 20.10 | 12.24 | <=== | |||
Show | 21 16 06 +29 51 51 | BWL 56 AD | 2012 | 2 | 200 | 2.6 | 7.86 | 18.40 | 10.54 | ||||
Show | 21 16 06 +29 51 51 | BWL 56 AE | 2012 | 2 | 226 | 4.4 | 7.86 | 19.40 | 11.54 | ||||
Show | 21 16 04 +29 51 46 | BWL 56 BF | 2011 | 2 | 233 | 3.5 | 8.66 | 23.10 | 14.44 |
Constellation | Cygnus | Gaia DR2 | 1851868127125091840 |
discov_num | notes | refcode |
LDS1053 | NLTT 50902/50901 | Chm2004 |
Luyten measure flipped around the E/W line: pa 282 -> 258. | Luy1969 |
refcode | metd | author | reference |
Chm2004 | E - | Chaname, J. & Gould, A. | 2004ApJ...601..289C |
Chm2004 | ApJ 601, 289, 2004 | ||
Chm2004 | (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early | ||
Chm2004 | versions of 2MASS and UCAC, with date given only as "circa 2000". Measures | ||
Chm2004 | identical to discovery observations - predominantly close pairs - were assumed | ||
Chm2004 | not new observations, so not included in WDS. Similar concerns when primary and | ||
Chm2004 | secondary magnitudes or proper motions were the same.) | ||
Luy1969 | Po - | Luyten, W.J. | 1969PMMin..21....1L |
Luy1969 | Univ. Minnesota Proper Motion Survey #21, 1969 | ||
Luy1969 | (CPM pairs found by comparison of Palomar 48-inch Schmidt plates. First and second | ||
Luy1969 | plates epochs were 1950-1955 and 1963-1967, so a default mean date of 1960 was | ||
Luy1969 | assigned to all measures for LDS 859 and later not having more precisely known | ||
Luy1969 | dates. LDS 833 - 858 were measured from Bruce PM plates - see note to Luy1941 | ||
Luy1969 | reference.) |
idgroup | discov | author |
1 | BWL | Bowler, B.P., Liu, M.C., Shkolnik, E.L., Dupuy, T.J., Cieza, L.A., Kraus, A.L., & |
1 | BWL | Tamura, M. |
10 | BWL | Bowler, B.P., Shkolnik, E.L., Liu, M.C., Schlieder, J.E., Mann, A.W., Dupuy, T.J., |
10 | BWL | Hinkley, S., Crepp, J., Johnson, J., Howard, A., Flagg, L., Weinberger, A., et al. |
11 | BWL | Bowler, B.P., Dupuy, T.J., Endl, M., Cochran, W.D., MacQueen, P.J., Fulton, B.J., |
11 | BWL | Petigura, E.A., Howard, A.W., Hirsch, L., Kratter, K.M., Crepp, J.R., Biller, B.A., |
11 | BWL | Johnson, M.C. & Wittenmyer, R.A. |
13 | LDS | Luyten p.m. catalog (from additional DD list) |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
21161+2951 | BWL 56 | AC | 2012 | 2 | 77 | 3.4 | 7.86 | 20.10 | M4.0 | U K | 211605.81+295150.8 |
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 | Ab | B | C | D | E | |
Ab | pa=165.2° sep=0.06" | |||||
B | pa=259.6° sep=26.71" | pa=259.8° sep=26.72" | ||||
C | pa=74.5° sep=2.94" | pa=73.4° sep=2.94" | pa=79.1° sep=29.64" | |||
D | pa=197.1° sep=2.55" | pa=197.8° sep=2.51" | pa=84.7° sep=25.64" | pa=228.0° sep=4.82" | ||
E | pa=222.0° sep=4.11" | pa=222.7° sep=4.08" | pa=85.8° sep=23.59" | pa=235.5° sep=6.77" | pa=253.0° sep=2.09" | |
F | pa=256.6° sep=29.49" | pa=256.7° sep=29.49" | pa=229.4° sep=3.16" | pa=256.4° sep=32.42" | pa=261.0° sep=28.28" | pa=261.7° sep=26.21" |
Coord arcsec 2000 | 211605.81+295150.8 | Mag | 12.89 | Spectral class | M3.5V (red) | PmRA | 206.00 | ||||
PmDE | 35.0 |
Coord arcsec 2000 | 211605.81+295150.7 | Mag | 8.8 | Calc delta mag | 0.3 | Calc coord | yes |
Coord arcsec 2000 | 211603.79+295146.0 | Coord calc | 211603.79+295146.0 | Mag | 8.66 | Spectral class | M3.3 (red) | ||||
PmRA | 220.00 | PmDE | 46.0 | Calc delta mag | 0.16 |
Coord arcsec 2000 | 211606.03+295151.6 | Mag | 20.1 | Calc delta mag | 11.6 | Calc coord | yes |
Coord arcsec 2000 | 211605.75+295148.4 | Mag | 18.4 | Calc delta mag | 9.9 | Calc coord | yes |
Coord arcsec 2000 | 211605.60+295147.7 | Mag | 19.4 | Calc delta mag | 10.9 | Calc coord | yes |
Coord arcsec 2000 | 211603.61+295143.9 | Mag | 23.1 | Calc delta mag | 14.6 | Calc coord | yes |