Revitalized 0.81m telescope learning… | The Planetary Society
In accordance with the newest substitute, after the aluminum coating of the mirrors of the Foremost Telescope and the realignment of the optics, had been pending the focal reducer. The lenses for the focal reducer, constructed by the company SILO (Florence, Italy), have been delivered in December 2013. The aluminum cell of the focal reducer was constructed and put in on September 2014 by the technician of the INAF-Astronomical Observatory of Turin, and now the reducer is operational as anticipated.
By way of the interval January to December 2014, with the Foremost Telescope (RC 0.81-m, f/8 + CCD), we made a whole lot of follow-up observations of the attainable NEOs confirmed throughout the NEOCP (NEO Affirmation Internet web page) of the Minor Planet Center. The revealed Minor Planet Digital Spherical and the Each day Orbit Exchange are confirmed throughout the beneath desk:
| MPEC 2014 | A44 : 2014 AA17 |
| MPEC 2014 | B65: 2014 BD33 |
| MPEC 2014 | B72 : 2014 BS43 |
| MPEC 2014 | E59: 2014 EP12 |
| MPEC 2014 | P35 : 2014 PG51 |
| MPEC 2014 | S109: 2014 SS261 |
| MPEC 2014 | S111: 2014 SU261 |
| MPEC 2014 | S113: 2014 SV261 |
| MPEC 2014 | S115: COMET P/2014 S4 (GIBBS) |
| MPEC 2014 | S119: 2014 SJ262 |
| MPEC 2014 | R48 : DAILY ORBIT UPDATE (2014 SEPT. 5 UT) |
| MPEC 2014 | R56 : DAILY ORBIT UPDATE (2014 SEPT. 6 UT) |
| MPEC 2014 | U54 : DAILY ORBIT UPDATE (2014 OCT. 25 UT) |
| MPEC 2014 | U85 : DAILY ORBIT UPDATE (2014 OCT. 27 UT) |
| MPEC 2014 | U101: DAILY ORBIT UPDATE (2014 OCT. 28 UT) |
In October 2014 we revealed the paper: A. Carbognani, “Asteroids Lightcurves at OAVDA: December 2013 – June 2014”, Minor Planet Bulletin Vol. 41, n. 4, 265-270, October-December 2014. This paper incorporates the outcomes of photometric observations of twelve asteroids (8 NEAs and 4 MBAs), and on the end there often is the subsequent acknowledgement:
Due to the Planetary Society for the award of the 2013 Shoemaker NEO Grant to OAVdA which made it attainable to enhance the telescope used to take a look at the NEAs.
Throughout the months of October and November 2014 the Foremost Telescope was used for a thesis of a scholar of the Physics Division of Turin Faculty. The objective of the thesis was to seek out out the rotation interval of some NEAs, (4401) Aditi, 1998 SS49 and 2014 VQ who’ve the flyby with the Earth. These asteroids are powerful to take a look at because of the small dimension and the extreme angular velocity which obliges to utilize very fast publicity events and ceaselessly change the sphere of view. The following rotation parameters have been obtained:
| Asteroid | Form | Interval (hours) | Amplitude (journal) |
| (4401) Aditi | Amor | 6.673 ± 0.002 | 0.24 |
| (85713) 1998 SS49 | Apollo-PHA | 5.997 ± 0.008 | 0.13 |
| 2014 VQ | Amor | 0.1161 ± 0.0001 | 0.75 |
The rotation interval and the amplitude of the sunshine curve can present knowledge on the shape and the inside building of an asteroid. Phrase the very fast rotation interval of 2014 VQ (see beneath decide), successfully beneath the value of two.2 h which is the spin-barrier value for the transition from rubble-pile objects to monolithic objects. 2014 VQ is a relatively huge asteroid to be so fast and the sunshine curve is single periodic, i.e. there isn’t any such factor as a sign of a attainable sophisticated rotation.
These outcomes will doubtless be supplied on the next Planetology Congress in Italy, which can doubtless be held throughout the metropolis of Bormio (February 2 to 6, 2015).
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