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Latest Details
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| Name |
V0907 Sco |
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| AAVSO UID |
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000-BFL-134 (No observations) |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
17 53 35.52 -34 44 40.1 |
| Proper motion |
| RA: -4.981 +/- 0.747 mas/y | Dec: -7.200 +/- 0.794 mas/y | Source: Gaia DR1 |
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| Galactic coord. |
356.214 -5.026 |
Other names
(Internal only)
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2MASS J17565556-3445011 |
CD-34 12293 |
CPD-34 7408 |
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HD 163302 |
IOMC 7386000078 |
SAO 209504 |
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TIC 261030551 |
TYC 7386-1185-1 |
WISEA J175655.55-344501.1 |
(Not logged in) Add name
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| Variability type |
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EA/DM |
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| Spectral type |
B9.5V |
| Mag. range |
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8.61 - 9.2 V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
3.7762049 d |
| 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 |
Lee, Sam
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2023AJ....165...81Z provided updated parameters. The distant companion has period of 142.01 d. The nodal precession period is 63.5 years. Eclipses were observed again in 2019, and should remain visible until the year ~2049. Min I amplitude in 2022: 0.1 mag. Predicted Min I amplitude: 0.28 mag in 2025, 0.68 mag in 2035. The system is confirmed to be unrelated to the visually nearby M7. |
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2 |
Otero, Sebastian Alberto
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Remark from 1999AJ....117..541L.
Triple star. The orbital planes of the B9.5V eclipsing binary and the more distant companion (per= 99.3 d.) are not coplanar so the orbital plane of the eclipsing binary shows nodal regression with a period of 68 years. For about one-third of this time, the close binary is eclipsing, the rest of the time the inclination is too small for eclipses to occur. The earliest observations of the system in the year 1899 show eclipses; the eclipses stopped about 1918, started again about 1963, and stopped again in about 1986. Eclipses should start occurring once again in the year 2030+/-5. |
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3 |
GCVS Team |
In the region of the open cluster NGC 6475 = M7. Min II 9.2. |
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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 |
Zasche, P.; et al., 2023, V907 Sco Switched to the Eclipsing Mode Again |
2023AJ....165...81Z |
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2 |
Bob Nelson's O-C files, 2016 |
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3 |
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info) |
2012arXiv1210.0821A |
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4 |
V907 Scorpii: A Remarkable Binary Star Whose Eclipses Turn On and Off and
On and Off |
1999AJ....117..541L |
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5 |
J.Rahe, E.Schoeffel, IBVS N1092, 1976. |
1976IBVS.1092....1R |
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External Links
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Location
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 8.10 | H = 8.07 | K = 8.04 | J - K = 0.06 |
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AllWISE
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W1 = 7.96 | W2 = 7.99 | W3 = 8.03 | W4 = 8.17 | W1 - W2 = -0.03 | W3 - W4 = -0.14 |
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APASS-DR9
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B = 8.71 | V = 8.52 | g' = 8.56 | r' = 8.56 | i' = 8.66 | B - V = 0.18 |
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Images
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Supporting Documents
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Revision History
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