08317+1924 DEL 1 Ba,Bb
08h 31m 37.44s +19° 23' 49.5" P.A. 176.00 sep 0.9 mag 13.80,14.80 Sp M4 dist. 11.07 pc (36.11 l.y.)
| Coord 2000 | 08317+1924 | Discov num | DEL 1 | Comp | Ba,Bb | Coord arcsec 2000 | 08 31 37.44 +19 23 49.5 | ||||
| Date first | 2000 | Date last | 2020 | Obs | 11 | ||||||
| Pa first | 219 | Pa last | 176.1 | P.A. Now (θ) | 176.1° | ||||||
| Sep first | 0.5 | Sep last | 0.904 | Sep. Now (ρ) | 0.904" | ||||||
| Mag pri | 13.80 | Mag sec | 14.80 | delta mag (ΔM) | 1 | Spectral class | M4 (red) | ||||
| Pri motion ra | -203 | Sec motion ra | |||||||||
| Pri motion dec | -087 | Sec motion dec | |||||||||
| Notes | N O (See Notes, Orbital solution) | ||||||||||
08317+1924 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | CU Cnc | 08 31 38 +19 23 40 | BEU 12 Aa,Ab | 2020 | 11 | 223 | 0.3 | 11.70 | 17.10 | 5.40 | Y | ||
| Show | 08 31 38 +19 23 40 | LDS 905 AB | 2020 | 14 | 348 | 10.0 | 11.70 | 13.40 | 1.70 | ||||
| Show | 08 31 38 +19 23 40 | LMP 40 AC | 2001 | 2 | 308 | 21.5 | 11.70 | 15.80 | 4.10 | ||||
| Show | 08 31 37 +19 23 50 | DEL 1 Ba,Bb | 2020 | 11 | 176 | 0.9 | 13.80 | 14.80 | 1.00 | Y | <=== |
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name | CU Cnc | Constellation | Cancer | HIP | 41824 | Gaia DR2 | 662732115407952768 | ||||
| GL | GJ 2069A | Distance | 11.07 | Distance ly | 36.11 |
ORBITAL ELEMENTS
| Period (P) | 63.1y | Periastron (T) | 1989.5y | Semi-major axis (a) | 0.767a | |||
| Eccentricity (e) | 0.327 | Inclination (i) | 117° | Longitude of periastron (ω) | 31.1° | |||
| Node (Ω) | 11.6° | Notes | n | Reference | Tok2021c | |||
| Equinox | 2000 | Last observation | 2021 | Grade | 5 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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 Measures: green=micrometric, blue=interferometric, purple=photographic |
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WDS 08317+1924 DEL 1 Ba,Bb : NOTES
| discov_num | notes | refcode |
| LDS 905 | AB: NLTT 19685/19684 | Chm2004 |
| CU Cnc and CV Cnc. This is a known quintuple system, as reported in, | ||
| e.g Delfosse et al. (1999) and Beuzit et al. (2004). Four of the | Del1999a | |
| components are resolved in two separate pairs (Aa,Ab and Ba,Bb) by | Beu2004 | |
| AstraLux. The fifth component is unresolved in the images; this is an | ||
| eclipsing binary companion to the Aa component. | Jnn2014 | |
| BEU 12 | Aa,Ab: Estimated age 30-300 Myr; masses 0.20 +/- 0.09 and 0.04 +/- | |
| 0.03 Msun; a ~6.0 au. | Jnn2014 | |
| DEL 1 | Ba,Bb: Estimated age 30-300 Myr; masses 0.24 +/- 0.12 and 0.18 +/- | |
| 0.09 Msun; a ~10.6 au. | Jnn2014 |
REFERENCES
| refcode | metd | author | reference |
| Beu2004 | A j | Beuzit, J.-L., Segransan, D., Forveille, T., Udry, S., Delfosse, X., Mayor, M., | 2004A&A...425..997B |
| Beu2004 | Perrier, C., Hainaut, M.-C., et al. | ||
| Beu2004 | A&A 425, 997, 2004 | ||
| 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.) | ||
| Del1999a | A - | Delfosse, X., Forveille, T., Beuzit, J.-L., Udry, S., Mayor, M., & Perrier, C. | 1999A&A...344..897D |
| Del1999a | A&A 344, 897, 1999 | ||
| Jnn2014 | A - | Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F., | 2014ApJ...789..102J |
| Jnn2014 | +Cl | Hippler, S., & Henning, T. | |
| Jnn2014 | ApJ 789, 102, 2014 | ||
| Tok2021c | orb - | Tokovinin, A. | 2021IAUDS.203....1S |
| Tok2021c | Inf. Circ. 203, 1, 2021 |
DISCOVERER
| idgroup | discov | author |
| 1 | LDS | Luyten p.m. catalog (from additional DD list) |
| 1 | LMP | Lampens, P. & Strigachev, A. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 08317+1924 | DEL 1 | Ba,Bb | 2000 | 1 | 219 | 0.5 | 13.40 | M4 | D | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2006 | 2 | 200 | 0.8 | 13.40 | M4 | D | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2011 | 3 | 181 | 0.5 | 13.40 | M4 | N | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2016 | 4 | 16 | 0.4 | 13.40 | M4 | N | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2018 | 6 | 210 | 0.4 | 13.40 | M4 | N | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2019 | 7 | 217 | 0.4 | 13.40 | M4 | N | 083137.44+192349.5 | |
| 08317+1924 | DEL 1 | Ba,Bb | 2020 | 10 | 176 | 0.9 | 13.80 | 14.80 | M4 | N | 083137.44+192349.5 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 08317+1924 DEL 1 Ba,Bb : VISUAL OBSERVATIONS REPORTS
WDS 08317+1924 DEL 1 Ba,Bb : MEASURES
WDS 08317+1924 : VIRTUAL EYEPIECE
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Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
WDS 08317+1924 : ALADIN DSS IMAGE @
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