Coord 2000 | 18501+3322 | Discov num | BU 293 | Comp | AC | Coord arcsec 2000 | 18 50 04.79 +33 21 45.6 | ||||
Date first | 1878 | Date last | 2015 | Obs | 8 | ||||||
Pa first | 248 | Pa last | 247.2 | P.A. Now (θ) | 247.2° | ||||||
Sep first | 46.3 | Sep last | 46.778 | Sep. Now (ρ) | 46.778" | ||||||
Mag pri | 3.63 | Mag sec | 13.00 | delta mag (ΔM) | 9.37 | Spectral class | B7Ve (blue-white) | ||||
Pri motion ra | +002 | Sec motion ra | -002 | ||||||||
Pri motion dec | -004 | Sec motion dec | -002 | ||||||||
Notes | N S (See Notes, Parallax indidates non-physical) |
Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
Show | 67451 | 18 50 05 +33 21 46 | CIA 3 Aa1,2 | 2007 | 14 | 88 | 0.0 | 3.60 | 4.00 | 0.40 | Y | ||
Show | 67451 | 18 50 05 +33 21 46 | RBR 11 Aa,Ab | 2002 | 1 | 176 | 0.5 | 3.60 | 8.20 | 4.60 | |||
Show | Sheliak | 67451 | 18 50 05 +33 21 46 | STFA 39 AB | 2017 | 117 | 149 | 45.7 | 3.63 | 6.69 | 3.06 | ||
Show | 67451 | 18 50 05 +33 21 46 | BU 293 AC | 2015 | 8 | 247 | 46.8 | 3.63 | 13.00 | 9.37 | <=== | ||
Show | 67451 | 18 50 05 +33 21 46 | BU 293 AD | 2015 | 8 | 68 | 64.0 | 3.63 | 14.30 | 10.67 | |||
Show | 67451 | 18 50 05 +33 21 46 | BU 293 AE | 2015 | 37 | 317 | 67.2 | 3.63 | 10.14 | 6.51 | |||
Show | 67451 | 18 50 05 +33 21 46 | BU 293 AF | 2015 | 36 | 18 | 86.0 | 3.63 | 10.62 | 6.99 | |||
Show | 67453 | 18 50 07 +33 21 07 | BU 293 BE | 2015 | 14 | 322 | 112.4 | 6.69 | 10.13 | 3.44 | |||
Show | 67453 | 18 50 07 +33 21 07 | BU 293 BF | 2015 | 14 | 1 | 120.6 | 6.69 | 10.62 | 3.93 | |||
Show | 18 50 01 +33 22 35 | BU 293 EF | 2015 | 11 | 66 | 79.4 | 10.14 | 10.62 | 0.48 |
Common name | Sheliak | Constellation | Lyra | SAO | 67451 | HIP | 92420 | ||||
Tycho2 | 2642-02929-1 | Gaia DR2 | 2090687795054381056 | HD | 174638 | HR | 7106 | ||||
GC | 25847 | ADS | 11745 | BD | BD+33 3223 | Bayer | Beta Lyrae | ||||
Bayer name | Bet Lyr | Flamsteed | 10 Lyrae | Flamsteed name | 10 Lyr | FK5 | 705 | ||||
Distance | 294.99 | Distance ly | 962.26 | Bayer greek | β Lyr |
Other names | SHILIAK, Shelyak |
Meaning | turtle (carapace) |
discov_num | notes | refcode |
STFA 39 | STTA175. A is 10 Lyr = Sheliak = bet Lyr, the prototype variable of | |
its class. B is BD+33@3224. | ||
AB: H 5 3. | MEv2010 | |
CIA 3 | Aa1,2: bet Lyr. Eclipsing binary (P=12.9d) resolved by CHARA Array | |
(Zhao et al. 2008). Reductions by two techniques (MACIM and BSMEM) and | CIA2008b | |
a model fit listed in paper; MACIM and BSMEM results given in WDS and | ||
Interferometric Catalog. Three possible orbital solutions also given, | ||
adopting period and Tmin from Ak et al. (2007 A&A 463, 233) and e=0 | ||
(Harmanec 2002 ANac 323, 87). These yield distance estimates ranging | ||
from 271 to 313 pc; masses for the gainer and donor are 12.76 +/- 0.27 | ||
and 2.83 +/- 0.18 Msun, respectively. | ||
Aa1,2: Malkov et al. (2012) derive dynamical and spectroscopic masses | ||
19.84 +/- 11.13 and 15.84 Msun, respectively. | Mlk2012 | |
In addition to the close pair there is also a hot spot with a size of | IAU2014b | |
22-33 solar radii. What is unknown is where the mass is lost and how | ||
much matter is in the jets. |
refcode | metd | author | reference |
CIA2008b | Kc j | Zhao, M., Gies, D., Monnier, J.D., Thureau, N., Pedretti, E., Baron, F., | 2008ApJ...684L..95Z |
CIA2008b | +orb | Merand, A., ten Brummelaar, T., McAlister, H., Ridgway, S.T., Turner, N., | |
CIA2008b | Sturmann, J., Sturmann, L., Farrington, C., & Goldfinger, P.J. | ||
CIA2008b | ApJ 684, L95, 2008 | ||
IAU2014b | - | Lomax, J. (IAU Symposium 307, in press) | . |
MEv2010 | - | MacEvoy, B. | ................... |
MEv2010 | private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) | ||
Mlk2012 | not - | Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. | 2012A&A...546A..69M |
Mlk2012 | A&A 546, A69, 2012 |
idgroup | discov | author |
1 | BU | Burnham, S.W. (BU 1 - 81) |
179 | RBR | Roberts, L.C., Jr. & Neyman, C.R. |
180 | RBR | Roberts, L.C., Jr., Turner, N.H., Bradford, L.W., ten Brummelaar, T., Oppenheimer, |
180 | RBR | B., Kuhn, J., Whitman, K., Perrin, M., et al. |
185 | RBR | Roberts, L.C., Jr., Gies, D.R., Parks, J.R., Grundstrom, E.D., McSwain, M., |
185 | RBR | Berger, D., Mason, B., ten Brummelaar, T. & Turner, N. |
192 | RBR | Roberts, L.C., Jr., Turner, N.H., ten Brummelaar, T.A., Mason, B.D., & |
192 | RBR | AJ 142, 175, 2011 |
192 | RBR | Roberts, L.C., Jr., Rice, E.L., Beichman, C.A., Brenner, D., Burruss, R., |
192 | RBR | Crepp, J.R., Dekany, R.G., Hillenbrand, L.A., Hinkley, S., Ligon, E.R., |
192 | RBR | Lockhart, T.G., King, D., et al. |
193 | RBR | Roberts, L.C., Jr., Bouchez, A.H., Roberts, J.E., Burruss, R., Crepp, J.R., Mawet, |
193 | RBR | D., Ohara, C.M., Cromer, J.L., Dekany, R.G., Troy, M., Velur, V. & Li, J. |
194 | RBR | Roberts, L.C., Jr., Tokovinin, A., Mason, B.D., Riddle, R.L., Hartkopf, W.I., |
194 | RBR | Law, N.M., & Baranec, Ch. |
195 | RBR | Roberts, L.C., Jr., Mason, B.D., Neyman, C.R., Wu, Y., Riddle, R.L., Shelton, J., |
195 | RBR | Angione, J., Baranec, Ch., Bouchez, A., Bui, K., Burruss, R., Burse, M., et al. |
196 | RBR | Roberts, L.C., Jr., Oppenheimer, R., Crepp, J.R., Baranec, Ch., Beichman, C.A., |
196 | RBR | Brenner, D., Burruss, R., Cady, E., Luszcz-Cook, S., Dekany, R., |
196 | RBR | Hillenbrand, L.A., Hinkley, S., et al. |
199 | RBR | Roberts, L.C., Jr., Mason, B.D., Aguilar, J., Carson, J., Crepp, J., Beichman, C., |
199 | RBR | Brenner, D., Burruss, R., Cady, E., Luszcz-Cook, S., Dekany, R., Hillenbrand, L., |
199 | RBR | et al. |
204 | STF | Struve, F.G.W. |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
18501+3322 | BU 293 | AC | 2007 | 5 | 247 | 47.1 | 3.63 | 13.00 | B7Ve | D | 185004.79+332145.6 |
18501+3322 | BU 293 | AC | 2014 | 7 | 247 | 46.4 | 3.63 | 13.00 | B7Ve | N | 185004.79+332145.6 |
18501+3322 | BU 293 | AC | 2015 | 8 | 247 | 46.8 | 3.63 | 13.00 | B7Ve | N | 185004.79+332145.6 |
Show | date | username | difficulty | sep | sep_sigma | pa | pa_sigma | delta_mag | # | notes |
Show | 14/06/27 | warin | very easy | 46.00 | 228.00 | 1.77 | 1 |
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