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8026 1991 JA1 (2010)
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MPC Designation: |
1991 JA1 |
| Lightcurves |
Period (h): |
372. ± 5. |
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Amplitude (mag): |
0.90 ± 0.03 |
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Equipment: |
Filter: C
MagBand: R
Telescope: 0.5m f/8.1 R/C
Camera: FLI 1001E
Exposure: 240 |
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Obs. Details |
Date E Mag Phase PABL PABB
2010-07-11 07:00 17.01 20.5 294.5 29.3
2010-07-13 07:00 17.00 20.5 294.7 29.5
2010-07-16 07:00 16.99 20.5 294.9 29.7
2010-07-17 07:00 16.99 20.6 295.0 29.7
2010-07-19 07:00 16.99 20.6 295.2 29.8
2010-07-20 07:00 16.99 20.7 295.3 29.9
2010-08-11 07:00 17.15 24.0 297.6 29.7
2010-08-13 07:00 17.17 24.4 297.9 29.6
2010-08-14 07:00 17.18 24.6 298.1 29.5
2010-08-15 07:00 17.20 24.9 298.2 29.4
2010-08-18 07:00 17.24 25.5 298.7 29.2
2010-08-30 07:00 17.41 28.0 301.2 28.1
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Data Points: |
306 |
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Discovered: |
1991-05-08 Palomar E. F. Helin |
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Family/Group: |
Hungaria |
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Taxonomic Class: |
ES (Assumed) |
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Published: |
MPB 38, 33-36 |
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NOTES: |
Unless otherwise stated, the "Reduced Magnitudes" in the plots are
Cousins R, based on 2MASS to BVRI conversions (Warner, MPB 34, 113-119)This is the second discovery of a possible rare binary type (the other being 218144) where there is a short-period, low-amplitude component superimposed on a long-period, large amplitude component. Which object would be the primary and which would be the secondary is a matter for debate. |
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Contents © 2011 Brian D. Warner / Palmer Divide Observatory |
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