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Name
  XZ Sgr  
AAVSO UID
000-BCC-145 (1183 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 22 06.80 -25 14 24.0  (275.52833 -25.24000) Search nearby
B1950.0 18 19 01.69 -25 15 53.8
Galactic coord. 7.213 -5.262
Other names

(Internal only)
AAVSO 1815-25C AN 32.1908 CD-25 13054
CPD-25 6489 HD 168710 HIP 90019
HV 3074 SAO 186718  
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Variability type
EA/SD
Spectral type A3V+G5IV-V:
Mag. range
8.82 - 10.93 V
Discoverer --
Epoch
27 Jul 1973 (HJD 2441890.6201) Ephemeris
Outburst --
Period 3.275555 d
Rise/eclipse dur. 11%  (8.65 h)
Remarks
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1 GCVS Team Min II 8.95; d = 0.022P. P var. Min I = 2420311.519 + 3.275537d*E (JD2420300 - 28000) [G.Lange, AN 228, 71, 1926.]; Min I = 2436440.137 + 3.27549d*E (JD2428000 - 37500) [G.A.Lange, Astron. Tsirk. N199, 1959.]; Min I = 2441150.348 + 3.2755357d*E (JD2437500 - 41500) [G.E.G.Knipe, MN 167, 369, 1974.]; since JD2441500 - see Table.
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References
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1 Bob Nelson's O-C files, 2016 --
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 J.S. Nichols et al., 2010, ApJS 188, 473 (online data) 2010ApJS..188..473N
4 N.Kappelmann, K.Walter, AsAp Suppl 38, N2, 161, 1979. 1979A&AS...38..161K
5 F.W.Wright, HB N891, 1933. 1933BHarO.891...10W
6 Dunér, N. C.; Hartwig, E.; Muller, G., 1912, Benennung von neu entdeckten
veränderlichen Sternen
1912AN....191..341.
7 CALEB - Catalog and AtLas of Eclipsing Binaries --
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Supporting Documents
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Revision History
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3 Fernig, Leo 2022-11-15 22:34 UTC Discoverer updated from 1912AN....191..341. page 353.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.