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Name
  X Sge  
AAVSO UID
000-BCK-434 (2774 observations)  
Constellation
Sagitta Sequence
J2000.0
20 05 04.92 +20 38 53.4  (301.27050 +20.64817) Search nearby
B1950.0 20 02 52.69 +20 30 17.3
Proper motion
RA: 1.4 +/- 1.0 mas/yDec: -0.9 +/- 1.0 mas/ySource: UCAC4
Galactic coord. 59.737 -5.868
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2000+20 AN 74.1911 ASAS J200505+2038.8
ASASSN-V J200504.99+203855.1 BD+20 4417 HD 190606
HIP 98909 HV 3338 IRC +20452
RAFGL 2504    
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Variability type
SRA
Spectral type C6-,5(N3)
Mag. range
8.05 - 8.85 V
Discoverer Ida Wells (1911)
Epoch
18 Apr 2005 (HJD 2453479) Ephemeris
Outburst --
Period 196 d
Rise/eclipse dur. 50%  (98 d)
Remarks
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1 GCVS Team VB A (B 13.18m, 6", 248deg).
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References
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1 C. Koen, L. Eyer, 2002, MNRAS 331, 45 2002MNRAS.331...45K
2 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
3 R.Weber, BSAM N23, 1969. --
4 F.Lause, AN 245, 376, 1932. --
5 Dunér, N. C.; Hartwig, E.; Muller, G., 1912, Benennung von neu entdeckten
veränderlichen Sternen
1912AN....191..341.
External Links
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 3.74H = 2.57K = 1.85J - K = 1.89
AllWISE W3 = 0.88W4 = 0.62W3 - W4 = 0.26
Images
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Supporting Documents
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Revision History
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4 Fernig, Leo 2022-11-15 22:35 UTC Discoverer updated from 1912AN....191..341. page 355.
3 Otero, Sebastian Alberto 2011-07-06 01:13 UTC Type, epoch and range from ASAS-3 data.
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.