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Latest Details
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| Name |
DDE 175 |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
19 01 32.64 +08 57 27.4 |
| Galactic coord. |
42.390 +1.357 |
Other names
(Internal only)
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2MASS J19035618+0901583 |
IPHAS J190356.19+090158.4 |
PGIR 20djo |
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URAT1 496-396386 |
USNO-A2.0 0975-14005660 |
ZTF18aaywchl |
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| Variability type |
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ZAND |
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| Spectral type |
em |
| Mag. range |
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15.5 - 20.8 r |
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| Discoverer |
Denis Denisenko, B. Sesar et al. |
| Epoch |
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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 |
Denisenko, Denis
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Unusual object with changing behavior. Chaotic large-amplitude variability (18.2-<20 r) in ZTF data during MJD= 58200-58300 followed by a nearly stable state at 18.0-18.2 r, 20.5-20.7 g during MJD= 58300-58440. Past brightenings to R= 17.5 on the 1951-07-04 POSS-I red plate and to r= 16.33 in IPHAS data (Witham et al., 2008). J-K= 1.07 (2MASS), r-i= 1.81 (IPHAS; high state), r-i= 2.27 (PanSTARRS-1; low state). |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
K. De; D. Stern; L. Hillenbrand; et al., 2021, ATel #14475 |
2021ATel14475....1D |
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2 |
D. Denisenko; D. Fernandez Ortiz; A. Kolesnikov; et al., 2021, ATel #14376 |
2021ATel14376....1D |
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3 |
Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive |
2019PASP..131a8003M |
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Sesar, B.; et al., 2017, Machine-learned Identification of RR Lyrae Stars
from Sparse, Multi-band Data: The PS1 Sample |
2017AJ....153..204S |
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Witham, A. R.; et al., 2008, The IPHAS catalogue of H_alpha emission-line
sources in the northern Galactic plane |
2008MNRAS.384.1277W |
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6 |
ZTF observations (Lasair online data) |
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Revision History
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