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  AS 270  
Sagittarius Sequence
18 05 33.73 -20 20 38.1  (271.39054 -20.34392) Search nearby
B1950.0 18 02 35.23 -20 20 55.9
Galactic coord. 9.701 +0.424
Other names

(Internal only)
2MASS J18053373-2020379 ASAS J180534-2020.7 Hen 3-1581
IRAS 18026-2025 SS73 126 UCAC1 25437415
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Variability type
Spectral type M5.5 + ?
Mag. range
11.5 - 14.0 V
Discoverer MERRILL P.W. and BURWELL C.G.
Outburst 2001
Period --
Rise/eclipse dur. --
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1 oconnor, steve Usually near V=13.5. B-V +1.10 at V=11.5 during outburst in 2001 (Henden)
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1 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2015, IBVS 6155
2 M. Gromadzki, J. Mikolajewska, I. Soszynski, 2013, arXiv:1312.6063
3 Fekel, F. C., et al., 2007, Infrared Spectroscopy of Symbiotic Stars. V.
First Orbits for Three S-Type Systems: Henize 2-173, CL Scorpii, and AS 270
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 -- 1950ApJ...112...72M
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Revision History
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4 Admin, VSX 2016-01-06 23:00 UTC Update from [2015IBVS.6155....1K].
3 Otero, Sebastian Alberto 2012-10-05 15:23 UTC Orbital elements from 2007AJ....133...17F. Epoch of orbital conjunction (minimum light) given. Type and minimum magnitude from ASAS-3 data.
2 oconnor, steve 2008-06-27 11:26 UTC --
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.