12313+5507 BAG 50 (NO UMa)
12h 31m 18.92s +55° 07' 07.6" P.A. 255.00 sep 0.1 mag 8.20,10.60 Sp K2V+K6.5V dist. 25.1 pc (81.88 l.y.)
| Coord 2000 | 12313+5507 | Discov num | BAG 50 | Comp | Coord arcsec 2000 | 12 31 18.92 +55 07 07.6 | |||||
| Date first | 2002 | Date last | 2019 | Obs | 29 | ||||||
| Pa first | 320 | Pa last | 255 | P.A. Now (θ) | 255° | ||||||
| Sep first | 0.7 | Sep last | 0.079 | Sep. Now (ρ) | 0.079" | ||||||
| Mag pri | 8.20 | Mag sec | 10.60 | delta mag (ΔM) | 2.4 | Spectral class | K2V+K6.5V (yellow-orange/yellow-orange) | ||||
| Pri motion ra | +107 | Sec motion ra | |||||||||
| Pri motion dec | -001 | Sec motion dec | |||||||||
| Notes | N O (See Notes, Orbital solution) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Var name | NO UMa | Constellation | Ursa Major | SAO | 28414 | HIP | 61100 | ||||
| Tycho2 | 3844-00102-1 | Gaia DR2 | 1571145907856592768 | HD | 109011 | GL | GJ 1160 | ||||
| BD | BD+55 1536 | Distance | 25.1 | Distance ly | 81.88 |
ORBITAL ELEMENTS
| Period (P) | 3.514y | ± 0.002 | Periastron (T) | 2013.55y | ± 0.003 | Semi-major axis (a) | 102.3m | ± 0.5 |
| Eccentricity (e) | 0.507 | ± 0.003 | Inclination (i) | 58.6° | ± 0.3 | Longitude of periastron (ω) | 244.5° | ± 0.4 |
| Node (Ω) | 177.6° | ± 0.4 | Notes | n | Reference | Mit2020 | ||
| Equinox | Last observation | Grade | 4 | (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 12313+5507 BAG 50 (NO UMa) : NOTES
| discov_num | notes | refcode |
| BAG 50 | GJ 1160. Primary is the variable NO UMa. | Bag2013 |
| Arenou (2000) gives combined solution of astrometric orbits and DSBs. | Are2000 | |
| Paper includes masses and distances. | ||
| Schlieder et al. (2016) derive the following properties for A and B: | ||
| spectral types K2V +/- 0.5 K6.5V +/- 0.5 | ||
| masses (Msun) 0.83 +/- 0.03 0.65 +/- 0.02 | ||
| Teff (K) 5020 +/- 50 4150 +/- 30 | ||
| log (L/Lsun) -0.48 +/- 0.03 -0.96 +/- 0.03. | SJE2016 | |
| Improved resolved SB2 orbit for this pair. | Kie2018 | |
| A: Teff = 5105 +/- 21 K, M = 0.834 +/- 0.017 \msun. | ||
| B: Teff = 4175 +/- 35 K, M = 0.640 +/- 0.011 \msun. | ||
| Orbital parallax = 38.82 +/- 0.23 mas. | ||
| Age = 0.4 Gyr. |
REFERENCES
| refcode | metd | author | reference |
| Are2000 | orb - | Arenou, F., Halbwachs, J.-L., Mayor, M., & Udry, S. | 2000IAUS..200P.135A |
| Are2000 | IAU Symp. 200, 135, 2000 | ||
| Bag2013 | S j | Balega, I.I., Balega, Yu.Yu., Gasanova, L.T., Dyachenko, V.V., Maksimov, A.F., | 2013AstBu..68...53B |
| Bag2013 | Malogolovets, E.V., Rastegaev, D.A., & Shkhagosheva, Z.U. | ||
| Bag2013 | Astrophys. Bull. 68, 53, 2013 | ||
| Kie2018 | orb - | Kiefer, F., Halbwachs, J.-L., Lebreton, Y., Soubiran, C., Arenou, F., Pourbaix, D., | 2018MNRAS.474..731K |
| Kie2018 | +not | Famaey, B., Guillout, P., Ibata, R. & Mazeh, T. | |
| Kie2018 | MNRAS 474, 731, 2018 | ||
| Mit2020 | S - | Mitrofanova, A., Dyachenko, V., Beskakotov, A., Balega, Y., Maksimov, A., | 2020AJ....159..266M |
| Mit2020 | Rastegaev, D. & Komarinsky, S. | ||
| Mit2020 | AJ 159, 266, 2020 | ||
| SJE2016 | A j | Schlieder, J.E., Skemer, A., Maire, A.-L., Desidera, S., Hinz, P., | 2016ApJ...818....1S |
| SJE2016 | +C | Skrutskie, M.F., Leisenring, J., Bailey, V., Defrere, D., Esposito, S., | |
| SJE2016 | Es | Strassmeier, K.G., Weber, M., et al. | |
| SJE2016 | +orb | ApJ 818, 1, 2016 |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 12313+5507 | BAG 50 | 2006 | 8 | 5 | 0.1 | 8.21 | K2V | N | 123118.92+550707.6 | ||
| 12313+5507 | BAG 50 | 2013 | 12 | 172 | 0.1 | 8.21 | K2V | NO | 123118.92+550707.6 | ||
| 12313+5507 | BAG 50 | 2019 | 28 | 255 | 0.1 | 8.20 | 10.60 | K2V+K6.5V | NO | 123118.92+550707.6 |
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WDS 12313+5507 BAG 50 (NO UMa) : VISUAL OBSERVATIONS REPORTS
WDS 12313+5507 BAG 50 (NO UMa) : MEASURES
WDS 12313+5507 (NO UMa) : VIRTUAL EYEPIECE
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WDS 12313+5507 (NO UMa) : ALADIN DSS IMAGE @
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