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Latest Details
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Name
  T Her  
AAVSO UID
000-BCB-468 (52891 observations)  
Constellation
Hercules Sequence
J2000.0
18 09 06.21 +31 01 16.2  (272.27587 +31.02117) Search nearby
B1950.0 18 07 12.64 +31 00 40.2
Proper motion
RA: -1.856 +/- 0.038 mas/yDec: 6.964 +/- 0.051 mas/ySource: Gaia DR1
Galactic coord. 57.600 +22.029
Other names

(Internal only)
AAVSO 1805+31 ASASSN-V J180906.27+310116.0 BD+30 3137
HD 166382 HIP 88923 SAO 66680
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Variability type
M
Spectral type M2.5e-M8e
Mag. range
6.8 - 13.7 V
Discoverer Bonn Observatory (1857)
Epoch
07 Oct 2011 (HJD 2455842.00) Ephemeris
Outburst --
Period 164.85 d
Rise/eclipse dur. 47%  (77 d)
Remarks
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1 GCVS Team VB A (B 10m, 67", 321deg).
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References
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1 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
2 T. Karlsson, Maxima of Mira stars --
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
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 = 4.21H = 3.31K = 2.99J - K = 1.22
AllWISE W1 = 3.27W2 = 2.56W3 = 2.13W4 = 1.70W1 - W2 = 0.72W3 - W4 = 0.43
APASS-DR9 B = 10.45i' = 8.73
GALEX-DR5 NUV = 19.75
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 18 09 06.21 +31 01 16.2 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 Legacy LPV Program
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2024-01-18 17:32 UTC Period and epoch from AAVSO data.
3 Fernig, Leo 2022-04-22 13:34 UTC Discoverer updated from 1907AnHar..55....1C page 22
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.

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