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Name
  TT Oph  
AAVSO UID
000-BBX-997 (10097 observations)  
Constellation
Ophiuchus Sequence
J2000.0
16 49 35.88 +03 37 54.1  (252.39950 +3.63169) Search nearby
B1950.0 16 47 06.27 +03 43 03.1
Proper motion
RA: -10.005 +/- 0.153 mas/yDec: -14.543 +/- 0.080 mas/ySource: Gaia DR1
Galactic coord. 21.477 +28.630
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1644+03 AN 121.1908 ASAS J164936+0337.9
ASASSN-V J164935.82+033754.1 BD+03 3281 HIP 82352
HV 3141 IOMC 0388000012 NSVS J1649351+033751
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Variability type
RVA
Spectral type G2e-K0
Mag. range
9.35 - 10.96 V
Discoverer Henrietta Leavitt (1908)
Epoch
15 May 2008 (HJD 2454602.00) Ephemeris
Outburst --
Period 60.98 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team [Fe/H] = -0.5.
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 Williams S.J., Wozniak P.R., Vestrand W.T., Gupta V., 2004, Unspecified
slow variables
--
3 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
4 G.W.Preston, W.Krzeminski, J.Smak, J.A.Williams, ApJ 137, 401, 1963. 1963ApJ...137..401P
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1952ApJ...115...25J
6 C.Payne-Gaposchkin, V.K.Brenton, S.Gaposchkin, HA 113, N1, 1943. 1943AnHar.113....1P
7 Dunér, N. C.; Hartwig, E.; Muller, G., 1911, Benennung von neu entdeckten
veränderlichen Sternen
1911AN....190...57.
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 = 7.71H = 7.32K = 7.21J - K = 0.50
AllWISE W1 = 7.07W2 = 7.08W3 = 6.65W4 = 6.39W1 - W2 = -0.01W3 - W4 = 0.26
APASS-DR9 B = 11.53V = 10.32g' = 10.99B - V = 1.21
GALEX-DR5 NUV = 19.01
SDSS-DR12 u = 12.13g = 9.94r = 9.06i = 9.00z = 10.04u - g = 2.19r - i = 0.07
Images
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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 67.
3 Otero, Sebastian Alberto 2011-06-17 01:51 UTC Primary record creation. Period, 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.