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3752 Camillo
Inclined contact-binary asteroid
Inclined contact-binary asteroid
| Field | Value |
|---|---|
| minorplanet | yes |
| name | 3752 Camillo |
| image | 3752 Camillo Radar.jpg |
| caption | Radar image of Camillo taken by the Arecibo Observatory on 21 February 2018, revealing its angular bilobate shape |
| background | #FFC2E0 |
| discovery_ref | |
| discovered | 15 August 1985 |
| discoverer | E. F. Helin |
| M. Barucci | |
| discovery_site | CERGA Obs. |
| mpc_name | (3752) Camillo |
| alt_names | 1985 PA |
| pronounced | |
| named_after | Camillo (son of King Turno and son of discoverer) |
| mp_category | NEOApollo |
| orbit_ref | |
| epoch | 23 March 2018 (JD 2458200.5) |
| uncertainty | 0 |
| observation_arc | 42.26 yr (15,436 d) |
| aphelion | 1.8400 AU |
| perihelion | 0.9871 AU |
| semimajor | 1.4135 AU |
| eccentricity | 0.3017 |
| period | 1.68 yr (614 d) |
| mean_anomaly | 41.249° |
| mean_motion | / day |
| inclination | 55.555° |
| asc_node | 147.98° |
| arg_peri | 312.22° |
| moid | 0.0780 AU (30.3871 LD) |
| mean_diameter | (approx.) |
| (taken) | |
| rotation | |
| albedo | |
| 0.22 | |
| spectral_type | S (assumed) |
| abs_magnitude | 15.315.4115.5 |
M. Barucci
(taken)
0.22
** 3752 Camillo** is an inclined contact-binary asteroid, classified as near-Earth object of the Apollo group, approximately 2.3 km in diameter. It was discovered on 15 August 1985, by astronomers Eleanor Helin and Maria Barucci using a 0.9 m telescope at the CERGA Observatory in Caussols, France. Lightcurve studies by Petr Pravec in 1998 suggest that the assumed S-type asteroid has an elongated shape and a longer-than average rotation period of 38 hours.
Orbit

Camillo orbits the Sun at a distance of 0.99–1.8 AU once every 20 months (614 days; semi-major axis of 1.41 AU). Its orbit has an eccentricity of 0.30 and an inclination of 56° with respect to the ecliptic.
Close approaches
The closest point between the orbit of the Earth and the orbit of this asteroid (Earth MOID) is currently 0.0780 AU or 30 lunar distances, so Camillo does not come close enough to Earth to qualify as a potentially hazardous asteroid. It came to perihelion (its closest approach to the Sun) on 6 January 1976 and, on 17 February 1976 and passed within 0.08013 AU of Earth.
2013 passage
Camillo came to perihelion on 27 December 2012. On 12 February 2013 the asteroid passed 0.14775 AU from Earth and had an apparent magnitude of 13. During the 2013 passage the asteroid was studied by radar using Goldstone and Arecibo.
| [[File:3752 Camillo skypath-2013.png | 480px]] |
|---|---|
| Camillo's south to north daily motion in the sky as seen from the earth |
2018 passage
On February 20, 2018, the asteroid passed by Earth. It was observed on radar by Arecibo Observatory and shown to have a long angular double-lobed shape. At 0.13 AU distance its peak magnitude was about 13.
| [[File:3752 Camillo skypath-2018.png | 480px]] |
|---|---|
| Camillo's south to north daily motion in the sky as seen from the earth |
Naming
This minor planet was named for the son of the early Roman King Turno. "Camillo" is also the name of the discoverer's son. The official naming citation was published by the Minor Planet Center on 20 May 1989 (M.P.C. 14633).
References
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|access-date = 2012-11-23}}
|display-authors = 6
|access-date = 10 May 2018}}
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|display-authors = 6
|access-date= 10 May 2018}}
|access-date= 10 May 2018}}
References
- (21 February 2018). "Radar images of 3752 Camillo". Arecibo Observatory (on Twitter).
This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.
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