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Details for Revision 5
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Name
  T CrB  
AAVSO UID
000-BBW-825 (447229 observations)  
Constellation
Corona Borealis Sequence
J2000.0
15 59 30.16 +25 55 12.6  (239.87567 +25.92017) Search nearby
B1950.0 15 57 24.54 +26 03 39.6
Galactic coord. 42.374 +48.165
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1SXPS J155930.1+255514 3XMM J155930.1+255512 AAVSO 1555+26
ASAS J155930+2555.2 ASASSN-V J155930.27+255511.9 BD+26 2765
Downes T CrB HD 143454 HIP 78322
HR 5958 MWC 413 N CrB 1866
Nova Coronae Borealis 1866 Nova CrB 1866 SAO 84129
SWIFT J1559.6+2554 X 15574+261  
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Variability type
NR+ELL
Spectral type M3III+pec(NOVA)
Mag. range
2.0 - 10.8 V
Discoverer J. Birmingham
Epoch
27 Jan 1990 (HJD 2447919.0) Ephemeris
Outburst 1946
Period 227.6 d
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick Discovered on 1866 May 12 by John Birmingham. First nova to be identified with an existing star (BD +26°2765, 9.5 mag). Second known eruption detected independently by Norman F. H. Knight (1946 Feb. 9.25 UT) and Armin Joseph Deutsch (Feb. 9.35 UT). Gaia DR2 parallax 1.2127 ± 0.0488 mas (distance 806 ± 33 pc).
2 Otero, Sebastian Alberto Amplitude for ELL variations 0.45 mag. GCVS outburst cycle 29,000 days.
3 GCVS Team VB? A (B <= 12m, 0.2"). SB (P = 227.6d). The spectral period is present in the photometric data of 1891 - 1917 and 1960 - 1971 [J.Bailey, JBAA 85, N3, 217, 1975.]. The epoch of the first outburst JD2402734 (1866). Two smaller outbursts were observed in UV light, JD2438030 (1963) and 2442543 (1975) [L.H.Palmer, J.L.Africano, IBVS N2069, 1982.].
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References
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1 Maslennikova, N. A.; Tatarnikov, A. M.; Tatarnikova, A. A.; et al., 2023,
Recurrent Symbiotic Nova T Coronae Borealis Before Outburst 		2023arXiv230810011M
2 M. Gromadzki, J. Mikolajewska, I. Soszynski, 2013, arXiv:1312.6063
[astro-ph.SR]		 2013arXiv1312.6063G
3 M. Gromadzki, J. Mikolajewska, I. Soszynski, 2013, arXiv:1312.6063
[astro-ph.SR]		 2013arXiv1312.6063G
4 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
5 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
6 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
7 Herbig, G. H.; Neubauer, F. J., 1946, The Spectrum of T Coronae Borealis at
the 1946 Maximum		 1946PASP...58..196H
8 Birmingham, J., 1866, The new variable near η Coronae *** Please covert MNRAS 26 (1866), 310 to bibcode ***
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Supporting Documents
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Campaigns/Programs
 Legacy CVs
 BAA VSS Recurrent Objects Programme
Revision History
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7 Otero, Sebastian Alberto 2023-08-22 14:19 UTC Epoch and period from 2023arXiv230810011M.
6 Schmeer, Patrick 2019-04-02 11:41 UTC Discoverer's given name added.
5 Admin, VSX 2013-12-27 05:48 UTC Update from [2013arXiv1312.6063G].
4 Otero, Sebastian Alberto 2011-01-12 01:48 UTC Primary record creation. Orbital period from Downes (2001). Epoch from ASAS-3 data.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2007-03-23 19:52 UTC Discoverer added.
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.

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