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Latest Details
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
alf UMi |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
01 48 44.92 +89 01 43.7 |
| Proper motion |
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| Galactic coord. |
123.281 +26.461 |
Other names
(Internal only)
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1 UMi |
3XMM J023145.5+891548 |
AAVSO 0122+88 |
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ADS 1477 A |
BD+88 8 |
CCDM J02319+8915A |
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CXO J023149.5+891550 |
CXOGSG J023150.1+891550 |
HD 8890 |
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HIP 11767 |
HR 424 |
IRAS 01490+8901 |
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Polaris |
RAFGL 273 |
SAO 308 |
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TYC 4628-237-1 |
WDS J02318+8916Aa |
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| Variability type |
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DCEPS |
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| Spectral type |
F7Ib-F8Ib |
| Mag. range |
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1.97 - 2.00 V |
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| Discoverer |
Ejnar Hertzsprung (1911) |
| Epoch |
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| Outburst |
-- |
| Period |
3.9696 d |
| Rise/eclipse dur. |
50% (48 h) |
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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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Amplitude decrease during the 20th century. Currently, amplitude varies but always below 0.05 mag.
Period is increasing. |
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2 |
GCVS Team |
VB A (B 8.20m, F3V, 18.3", 218deg); SB1 (Porb = 10969d, E = 0.655 [K.W.Kamper, N.R.Evans, R.W. Lyons, JRAS Can 78, N5, 173, 1984.]). P var. There is a non-linear term in the elements: +1.9877d*10**(-7)*E**2. The amplitude of light and radial velocity variation decreased in 1982. A(V) = 0.04m (1984). |
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References
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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 = 0.80 | H = 0.46 | K = 0.46 | J - K = 0.34 |
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AllWISE
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W3 = 0.58 | W4 = 0.57 | W3 - W4 = 0.02 |
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Images
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Supporting Documents
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Revision History
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