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Latest Details
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Name
  CI Oph  
AAVSO UID
000-BDW-615 (No observations)  
Constellation
Ophiuchus Sequence
J2000.0
16 54 07.52 -26 24 07.4  (253.53133 -26.40206) Search nearby
B1950.0 16 51 02.12 -26 19 16.7
Proper motion
RA: -4.1 +/- 2.3 mas/yDec: -2.7 +/- 1.6 mas/ySource: UCAC4
Galactic coord. 355.589 +10.818
Other names

(Internal only)
2MASS J16540752-2624074 ASASSN-V J165407.41-262408.2 CMC15 J165407.5-262407
GSC 06818-00299 HV 4255 TIC 16062208
UCAC4 318-099247    
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Variability type
EA
Spectral type A
Mag. range
13.26 - 13.85 V
Discoverer --
Epoch
27 Mar 2017 (HJD 2457839.694) Ephemeris
Outburst --
Period 1.743849 d
Rise/eclipse dur. 15%  (6.28 h)
Remarks
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1 Peretto, Ivo Min II= 13.37 V.
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References
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1 Creevey, O. L.; et al., 2023, Gaia Data Release 3: Astrophysical parameters
inference system (Apsis) I -- methods and content overview
2023A&A...674A..26C
2 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive
2019PASP..131a8003M
3 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
4 H.H.Swope, HB N887, 1932. 1932BHarO.887....6S
5 H.H.Swope, HB N857, 1928. 1928BHarO.857....1S
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 = 12.20H = 11.93K = 11.93J - K = 0.27
AllWISE W1 = 11.96W2 = 11.96W1 - W2 = -0.01
APASS-DR9 B = 13.70V = 13.24g' = 13.42r' = 13.09i' = 13.01B - V = 0.46
Images
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Supporting Documents
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1 Phase Plot Peretto, Ivo 2024-06-21 17:45 UTC Phase plot with ASAS-SN and ZTF data.
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Revision History
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3 Peretto, Ivo 2024-06-19 21:35 UTC Position from Gaia DR3. Spectral type from 2023A&A...674A..26C. Type, period, epoch and range from ASAS-SN and ZTF 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.