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11904 1991 TR1 (2007)
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MPC Designation: |
1991 TR1 |
| Lightcurves |
Period (h): |
9.123 ± 0.005 |
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Amplitude (mag): |
0.31 ± 0.03 |
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Equipment: |
Filter: C
MagBand: R
Telescope: 0.35m f/9.1 SCT
Camera: FLI 1001E
Exposure: 180 |
|
Obs. Details |
Date E Mag Phase PABL PABB
2007-11-02 07:00 15.73 7.5 48.9 -0.9
2007-11-03 05:00 15.69 6.8 49.0 -1.1
2007-11-04 07:00 15.66 6.0 49.0 -1.3
2007-11-05 07:00 15.62 5.3 49.0 -1.6
2007-11-06 08:00 15.58 4.6 49.1 -1.8
2007-11-07 08:00 15.55 4.0 49.1 -2.1
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Data Points: |
429 |
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Discovered: |
1991-10-13 Palomar K. J. Lawrence |
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Family/Group: |
Hungaria |
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Taxonomic Class: |
ES (Assumed) |
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Published: |
MPB 35, 67-71 |
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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)The period was orginally reported as 9.123 h. Given the amplitude and modest phase angle, a bimodal solution is virtually assured, thus the revised period of 18.233 h and a shape that hints of a bifurcated body. The 2012 appartion showed a very low amplitude lightcurve, meaning that the longitude of the pole is close to 50° (or 230°) and the latitude is within 10-15° of the ecliptic plane. |
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Contents © 2012 Brian D. Warner / Palmer Divide Observatory |
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