Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric «Stellar and substellar companions of nearby stars from Gaia DR2». Astronomy & Astrophysics, vol. 623, 2019, pàg. A72. arXiv: 1811.08902. Bibcode: 2019A&A...623A..72K. DOI: 10.1051/0004-6361/201834371. ISSN: 0004-6361. «"This PMa offset between 61 Cyg A and B points at the possible presence of a third body in the system, likely orbiting around 61 Cyg B."»
Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric «Stellar and substellar companions of nearby stars from Gaia DR2». Astronomy & Astrophysics, vol. 623, 2019, pàg. A72. arXiv: 1811.08902. Bibcode: 2019A&A...623A..72K. DOI: 10.1051/0004-6361/201834371. ISSN: 0004-6361. «"This PMa offset between 61 Cyg A and B points at the possible presence of a third body in the system, likely orbiting around 61 Cyg B."»
Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric «Stellar and substellar companions of nearby stars from Gaia DR2». Astronomy & Astrophysics, vol. 623, 2019, pàg. A72. arXiv: 1811.08902. Bibcode: 2019A&A...623A..72K. DOI: 10.1051/0004-6361/201834371. ISSN: 0004-6361. «"This PMa offset between 61 Cyg A and B points at the possible presence of a third body in the system, likely orbiting around 61 Cyg B."»
Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric «Stellar and substellar companions of nearby stars from Gaia DR2». Astronomy & Astrophysics, vol. 623, 2019, pàg. A72. arXiv: 1811.08902. Bibcode: 2019A&A...623A..72K. DOI: 10.1051/0004-6361/201834371. ISSN: 0004-6361. «"This PMa offset between 61 Cyg A and B points at the possible presence of a third body in the system, likely orbiting around 61 Cyg B."»