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Details for Revision 2
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Name
  RT Ara  
AAVSO UID
000-BCT-769 (32 observations)  
Constellation
Ara Sequence
J2000.0
17 26 18.30 -55 13 56.0  (261.57625 -55.23222) Search nearby
B1950.0 17 22 09.57 -55 11 20.2
Galactic coord. 335.701 -10.974
Other names

(Internal only)
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AAVSO 1718-55 AN 118.1910 ASAS J172619-5514.0
CD-55 7174 CPD-55 8112 HV 3290
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Variability type
RV
Spectral type F8Ia
Mag. range
10.2 - 11.3 V
Discoverer --
Epoch
15 Mar 2001 (HJD 2451983.8) Ephemeris
Outburst --
Period 76.69 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team According to Cannon [A.J.Cannon, HC N162, 1910.] who discovered the star's variability, a companion 12.0m is present in 0.1m to W and somewhat to the north from the variable. Cannon points out that at Min light the variable becomes fainter than the companion. No sign of the companion's existence was found by Hoffmeister [C.Hoffmeister, KVBB N27, 1943.] and by Payne-Gaposchkin [C.Payne-Gaposchkin, HA 115, N3, 1945.]. According to [C.Payne-Gaposchkin, HA 115, N3, 1945.], the mean cycle is ~78d, and RVA type is possible.
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References
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1 N.N Samus, E.N. Pastukhova, O.V. Durlevich, 2007, PZ 27, 6 2007PZ.....27....6S
2 N.N Samus, E.N. Pastukhova, O.V. Durlevich, 2007, PZ 27, 6 2007PZ.....27....6S
3 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
4 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1972POAN....2...59S
5 J.Kordylewska, R.Szafraniec, EBC N36, 1960. --
6 C.Hoffmeister, KVBB N27, 1943. 1941KVeBB...7....3H
7 Dunér, N. C.; Hartwig, E.; Muller, G., 1911, Benennung von neu entdeckten
veränderlichen Sternen		 1911AN....190...57.
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Supporting Documents
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Revision History
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4 Fernig, Leo 2022-11-15 22:32 UTC Discoverer updated from 1911AN....190...57. page 68.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2008-08-27 02:29 UTC Update from [2007PZ.....27....6S].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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