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Latest Details
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Name
  XX Oph  
AAVSO UID
000-BBZ-287 (6562 observations)  
Constellation
Ophiuchus Sequence
J2000.0
17 43 56.50 -06 16 08.8  (265.98542 -6.26911) Search nearby
B1950.0 17 41 15.46 -06 14 52.5
Proper motion
RA: 1.090 +/- 0.064 mas/yDec: -6.134 +/- 0.051 mas/ySource: Gaia DR1
Galactic coord. 19.410 +11.947
Other names

(Internal only)
AAVSO 1738-06 ASAS J174357-0616.1 BD-06 4638
EIC 8023 GSC 05093-00346 HD 161114
HIP 86777 HV 3605 IOMC 5093000012
IRAS 17412-0614 IRC -10376 MWC 269
SAO 141834 TYC 5093-346-1  
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Variability type
EA:+ZAND:
Spectral type M7III+sdB
Mag. range
8.59 - 10.2 V
Discoverer --
Epoch
21 Sep 2004 (HJD 2453270) Ephemeris
Outburst --
Period 13600: d  (37.23 y)
Rise/eclipse dur. 2.7%:  (52 weeks)
Remarks
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1 Otero, Sebastian Alberto Fading in July 1967 based only on sparse AAVSO visual data.
2 GCVS Team A symbiotic object featuring deep fadings of long duration [H.Shapley, I.E.Woods, HC N292, 1926.].
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References
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1 Evans, A.; van Loon, J. Th.; Woodward, C. E.; et al., 2012, Solid-phase C60
in the peculiar binary XX Oph?
2012MNRAS.421L..92E
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 Pojmanski, G., 2002, The All Sky Automated Survey 2002AcA....52..397P
4 M.Beyer, Bamb Ver XII, N123, 1977. 1977VeBam.123.....B
5 F.M.Bateson, A.F.Jones, I.Stranson, Charts for Southern Variables. ser.4,
1967-68.
--
External Links
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Location    Go   
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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 = 4.86H = 3.49K = 2.97J - K = 1.89
AllWISE W3 = 1.83W4 = 1.15W3 - W4 = 0.68
APASS-DR9 B = 10.04V = 8.91g' = 10.52B - V = 1.13
GALEX-DR5 FUV = 16.44NUV = 15.27FUV - NUV = 1.16
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2023-04-13 19:48 UTC Type, period, epoch, eclipse duration and range from ASAS-3 and AAVSO data.
3 Otero, Sebastian Alberto 2019-07-18 21:17 UTC Spectral type from 2012MNRAS.421L..92E.
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.