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Latest Details
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
alf Com |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
13 07 33.36 +17 47 36.4 |
| Proper motion |
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| Galactic coord. |
327.933 +79.489 |
Other names
(Internal only)
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42 Com |
1RXS J130959.3+173136 |
AAVSO 1305+18 |
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ADS 8804 |
Alpha Com |
BD+18 2697 |
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CSV 102722 |
GJ 501.0 AB |
GSC 01454-01130 |
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HD 114378 |
HD 114379 |
HIP 64241 |
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HR 4968 |
HR 4969 |
NSV 6116 |
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PPM 129630 |
SAO 100443 |
TYC 1454-1134-1 |
(Not logged in) Add name
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| Variability type |
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EA: |
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| Spectral type |
F5V+F5V |
| Mag. range |
| 4.33 - ? V |
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| Discoverer |
-- |
| Epoch |
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| Outburst |
-- |
| Period |
9442.4 d (25.85 y) |
| 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 |
Otero, Sebastian Alberto
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Previous predictions were based on wrong position angle measurements. The star is much likely an eclipsing binary. If a secondary eclipse occurs, the main predicted date of eclipse is 2461051 (2026 Jan. 11) (2015AJ....150..140M). |
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2 |
Otero, Sebastian Alberto
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No eclipses recorded by AAVSO observers at the expected date HJD 2457047.50. Orbital period 9485.68 d. |
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3 |
Otero, Sebastian Alberto
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Combined magnitude given in the table. A= 4.98V (B-V= 0.44); B= 5.18V (B-V= 0.47); sep. 0.0-0.7". |
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4 |
GCVS Team |
ADS 8804 (5.05, 5.05, 0".2, 12deg, 1973; P=25.3 years); i=~90deg. Eclipses are possible. |
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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 |
Muterspaugh, M. W.; Wijngaarden, M. J. P.; Henrichs, H. F.; et al., 2015,
Predicting the α Comae Berenices Time of Eclipse: How 3 Ambiguous
Measurements out of 609 Caused a 26 Year Binary’s Eclipse to be Missed |
2015AJ....150..140M |
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2 |
M.W. Muterspaugh et al., 2010, AJ, 140, 1623 |
2010AJ....140.1623M |
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3 |
H.Haffner, Nbl AZ 2, 8, 1948. |
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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 = 3.40 | H = 3.27 | K = 3.11 | J - K = 0.29 |
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SDSS-DR12
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u = 11.09 | g = 12.96 | r = 10.41 | i = 9.23 | z = 9.82 | u - g = -1.87 | r - i = 1.17 |
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Images
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Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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There are currently no supporting documents on file for this star.
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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