Near Earth Asteroid
Photometry > 2018
(172034) 2001 WR1
No reference to light curve period
(194126)_2001_SG276
Amor class NEA
Absolute magnitude (H): 17.7
Data taken on 27_28_29Apr
Despite the slight change in the zero point over the nights, amplitude remain at 0.08m
Email correspondence with Warner who found larger amplitude in march. Pravec indicated it was Phase magnitude relationship at large Phase Angle.
The sudden increase from the average amplitude of 0.08m to 0.17m may be caused by an event captured.
More data will be taken in Mid May
April data
the data on 04 of May as it started its track through the milkyway. I stopped and will resume again when the weather clear in the next few days. It has slowed somewhat but also dimmer at 16th mag.
the period is about 5.1h and the amplitude is 0.08mag.
The 4th May lightcurve show 0.21 mag that I believe is another event captured.
The combined data was recalculated to derive P1 and P2 as shown.
second orbital period of 26h is only very preliminary.
(194513)
Mars Crosser
Collaboration with Amadeo Aznar to determine the rotation period
(388945)_2008_TZ3.PNG
Apollo class asteroid
Previous work published: Warner, B.D. (2016) Minor Planet Bull. 43, 311-319
rotation period was found to be 44.2h
Preliminary work found it to be around 20h bimodal period with ampitude of 0.5m
(163243)_2002_FB3
Aten Class NEA, PHA
Absolute mag (H): 16.4 mag
Previous work done by:
Monteiro, F.; Silva, J.S.; Lazzaro, D.; Arcoverde, P.; et al (2017) Minor Planet Bull. 44, 20-22.]
Rotation period was 6.231h that is different to what current measurement found at 12.32h also based on incomplete lightcurve segments.
(1627)_Ivar
Absolute mag (H): 13.2
Previous work done by numerous authors but the latest are:
[Warner, B.D. (2015) Minor Planet Bull. 42, 172-183.]
[Crowell, J.L.; Howell, E.S.; Magri, C.; Nolan, M.C.; et al. (2017) Icarus 291, 254-267.]
rotation period was 4.795h, consisitent with current measurements.
(25916)_2001_CP44
Amor class NEA
Absolute magnitude (H) of 13.6m
Previous work done by:
[Warner, Brian D. (2014) Minor Planet Bull. 41, 213-224.]
Rotation period was 4.19h.
This is not consistent with current measurement.
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2015 DP155
NEA asteroid
2017 YE5
NEA
Collaboration with Gold stone and Arecibo. Also with other stations.
Radar show the asteroid to be a same size binary asteroid. Only 4 have been discovered.
Rotation period derived to be 23.4 hours.
2018 NB
This Amor NEA
