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Latest Details
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| Name |
ASASSN-19xw |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
19 16 56.08 +24 57 57.6 |
| Galactic coord. |
58.305 +5.531 |
Other names
(Internal only)
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| Variability type |
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UGWZ |
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| Spectral type |
-- |
| Mag. range |
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14.9 - <23 g |
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| Discoverer |
ASAS-SN |
| Epoch |
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29 Sep 2019 (HJD 2458755.73) |
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| Outburst |
-- |
| Period |
-- |
| Rise/eclipse dur. |
-- |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Schmeer, Patrick
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Unfiltered time-series runs, made on seven consecutive nights from 2019 Sept. 29.8 UT (JD = 2458756.3), did not reveal any periodic variation with an amplitude > 0.02 magnitudes down to 50 cycles/day (2019ATel13180...1L). Subsequently, superhumps with an amplitude of 0.28 mag and a period of 0.057(2) d were detected 2019 Oct. 17–21 (vsnet-alert 23650, 2019ATel13225....1L). Spectroscopy on 2019 Oct. 12 revealed strong, narrow H-alpha emission on top of broader H-alpha absorption and Balmer absorption lines, consistent with that of a dwarf nova in outburst (J. Rupert, TNS). The epoch is for the optical peak of the 2019 superoutburst. |
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2 |
Otero, Sebastian Alberto
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ASAS-SN magnitudes contaminated by 2MASS J19190095+2503293 (V= 18.4; g= 19.0; sep. 9"); 2MASS J19190006+2503240 (V= 17.6; g= 18.3; sep. 9") and 2MASS J19185981+2503255 (V= 18.3; g= 18.8; sep. 10"). Range has been corrected. |
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References
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External Links
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Location
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Images
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Supporting Documents
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Revision History
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2 |
Schmeer, Patrick
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2019-10-11 16:12 UTC |
Type from vsnet-alert 23650, 2019ATel13225....1L, and vsnet-alert 23657. Position based on astrometry by T. Vanmunster (personal communication). "Eruption" year deleted. |
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1 |
Otero, Sebastian Alberto
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2019-09-30 21:56 UTC |
Approximate minimum magnitude from Pan-STARRS1 Aladin image. |
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