T Boötis

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Location of T Boötes (circled in red)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Boötes
Right ascension	14h 14m 07.00s
Declination	+19° 04′ 00.0″
Apparent magnitude (V)	9.7-<20.4
Characteristics
Variable type	N (Nova)
Other designations
AAVSO 1409+19, BD+19 2768
Database references
SIMBAD	data

T Boötis is believed to have been a nova. It was observed by only one person, Joseph Baxendell on 9, 11 and 22 April 1860, but has not been seen since. It is located less than half a degree from Arcturus in the constellation Boötes and was at magnitude 9.75 when first seen, and magnitude 12.8 when last seen. Other astronomers, including Friedrich Winnecke, Edward Charles Pickering, Ernst Hartwig and Ernst Zinner looked for a star in this location without success.

Despite being usually referred to as a nova, it had characteristics that set it apart from other novae - an amplitude of at least 7 magnitudes, an unusually rapid decline in brightness and a location unusually far from the Galactic plane. Joseph Ashbrook suggested in 1953 that it may be a recurrent nova which has been observed only once.

References

1. ^ a b c d "VSX: Detail for T Boo". The International Variable Star Index. AAVSO. Archived from the original on 28 April 2017. Retrieved 16 May 2015.
2. ^ a b Baxendell, Joseph (1861). "On the Three New Variable Stars, T Bootis, T. Serpentis, and S Delphini". Monthly Notices of the Royal Astronomical Society. 21 (3). Smithsonian Astrophysical Observatory: 68. Bibcode:1861MNRAS..21...68B. doi:10.1093/mnras/21.3.68.
3. ^ a b Burnham, Robert (1978). Burnham's Celestial Handbook Volume 1. Dover. p. 311. ISBN 978-0-486-31902-5.
4. ^ Ashbrook, Joseph (1953). "Notes on Four Novae". The Astronomical Journal. 58. Smithsonian Astrophysical Observatory: 175. Bibcode:1953AJ.....58..175F. doi:10.1086/106846. Archived from the original on 27 May 2024. Retrieved 16 May 2015.

v t e Constellation of Boötes
Boötes in Chinese astronomy Boötes Void List of stars in Boötes
Stars	Bayer α (Arcturus) β (Nekkar) γ (Seginus) δ (Princeps) ε (Izar) ζ η (Muphrid) θ (Asellus Primus) ι (Asellus Secundus) κ (Asellus Tertius) λ (Xuange) μ (Alkalurops) ν1 ν2 ξ ο π ρ σ τ υ φ χ ψ ω Flamsteed 1 2 3 6 (e) 7 9 10 11 12 (d) 13 14 15 18 20 22 (f) 24 (g) 26 31 32 33 34 38 (h, Merga) 39 40 44 (i) 45 (c) 46 (b) 47 (k) 50 Variable R S T ZZ BL BP BX BY CE CH CI CP CR CX CY (101 Vir) DE EK HN HP HD 118508 118889 122563 125040 125351 (A) 125658 126128 126141 126200 126271 127304 127726 128093 128198 129132 129357 130084 130603 130917 131040 131473 131496 (Arcalís) 132029 132406 132563 134064 134335 135438 135530 135944 136418 (Nikawiy) 141399 Other CFBDSIR 1458+10 Gliese 526 HAT-P-4 2MASS J15031961+2525196 LHS 2924 PSR J1544+4937 SDSS J1416+1348 SDSS J1433+1011 TVLM 513-46546 WASP-14 ZTF J153932.16+502738.8
Exoplanets HD 136418 b (Awasis) HAT-P-4b HD 128311 b c HD 132406 b τ Boötis b WASP-14b
Star clusters NGC 5466
Galaxies	NGC 5248 5490 5500 5514 5523 5529 5533 5535 5539 5544 5545 5548 5557 5559 5562 5579 5582 5609 5613 5614 5615 5624 5641 5653 5665 5676 5682 5683 5714 5752 5753 5754 5755 5820 5821 5829 5837 5886 5896 5929 5930 5966 Numbered I II III Other Arp 302 3C 295 3C 299 3C 303 7C 1415+2556 CEERS-2112 CEERS-93316 CLASS B1359+154 Cloverleaf quasar DDO 190 EGS-zs8-1 EGSY8p7 IC 1050 IC 4461 IC 4462 IC 4481 IC 4516 LEDA 2108986 MACS 1423-z7p64 Maisie's Galaxy MS 1512-cB58 PG 1543+489 PGC 1470080 SDSSCGB 10189 SDSS J1430+2303 Teacup galaxy UGC 9128 UGC 9684 UGC 9796 ULAS J1342+0928
Galaxy clusters Abell 1795 IDCS J1426.5+3508
Astronomical events GRB 990123 GRB 080319B SCP 06F6 SN 2003fg SN 2005bc SN 2020tlf
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