11107+3110 HJ 2562
11h 10m 41.86s +31° 09' 32.7" P.A. 221.00 sep 1.0 mag 10.53,11.40 Sp K5 dist. 54.85 pc (178.92 l.y.)
| Coord 2000 | 11107+3110 | Discov num | HJ 2562 | Comp | Coord arcsec 2000 | 11 10 41.86 +31 09 32.7 | |||||
| Date first | 1831 | Date last | 2017 | Obs | 50 | ||||||
| Pa first | 347 | Pa last | 221 | P.A. Now (θ) | 221° | ||||||
| Sep first | 1.5 | Sep last | 1.009 | Sep. Now (ρ) | 1.009" | ||||||
| Mag pri | 10.53 | Mag sec | 11.40 | delta mag (ΔM) | 0.87 | Spectral class | K5 (yellow-orange) | ||||
| Pri motion ra | -088 | Sec motion ra | -088 | ||||||||
| Pri motion dec | -023 | Sec motion dec | -023 | ||||||||
| Notes | N O (See Notes, Orbital solution) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Ursa Major | HIP | 54619 | Tycho2 | 2520-00597-1 | Gaia DR2 | 756958509559756544 | ||||
| ADS | 8082 | BD | BD+31 2238 | Distance | 54.85 | Distance ly | 178.92 |
ORBITAL ELEMENTS
| Period (P) | 468.8926y | ± 249.5266 | Periastron (T) | 1857.7161y | ± 26.5467 | Semi-major axis (a) | 1.76611a | ± 0.57719 |
| Eccentricity (e) | 0.32888 | ± 0.32191 | Inclination (i) | 119.779° | ± 11.231 | Longitude of periastron (ω) | 123.1° | ± 41.075 |
| Node (Ω) | 138.446° | ± 16.345 | Notes | n | Reference | Izm2019 | ||
| Equinox | Last observation | 1996 | 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 11107+3110 HJ 2562 : NOTES
| discov_num | notes | refcode |
| HJ 2562 | A premature orbit has been calculated. | B__1963b |
REFERENCES
| refcode | metd | author | reference |
| B__1963b | Ma j | van den Bos, W.H. | 1963AJ.....68..582V |
| B__1963b | AJ 68, 582, 1963 | ||
| Izm2019 | orb u | Izmailov, I.S. | 2019AstL...45...30I |
| Izm2019 | Ast. Lett. 45, 30, 2019 | ||
| Izm2019 | (Orbital elements from weighted solutions used when available (Table 2), | ||
| Izm2019 | unweighted elements (Table 1) used for remaining 29 systems.) |
DISCOVERER
| idgroup | discov | author |
| 1 | HJ | Herschel, J.F.W. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 11107+3110 | HJ 2562 | 1996 | 40 | 245 | 1.1 | 10.53 | 11.40 | K5 | NO | 111041.86+310932.7 | |
| 11107+3110 | HJ 2562 | 2017 | 41 | 221 | 1.0 | 10.53 | 11.40 | K5 | NO | 111041.86+310932.7 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 11107+3110 HJ 2562 : VISUAL OBSERVATIONS REPORTS
WDS 11107+3110 HJ 2562 : MEASURES
WDS 11107+3110 : VIRTUAL EYEPIECE
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WDS 11107+3110 : ALADIN DSS IMAGE @
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