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Asteroid Near-Earth

Camillo

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3752 Camillo (1985 PA)

Where is it now

Distance from Sun
1.418 AU
True anomaly
108.14°
Distance from Earth
2.23 AU
As of
11 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth Camillo — 1.418 AU from the Sun Camillo
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Camillo is 2.23 AU from Earth today (18.5 light-minutes).

In the sky

Right ascension
13h 42m 47s
Declination
+18° 47′ 18″
Constellation
Boötes
Distance from Earth
2.23 AU
Elongation from the Sun
27.45° — near the Sun — look low at dusk or dawn

Favours the northern hemisphere; low or below the horizon from far south.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
1.414 AU
Eccentricity
0.3016
Inclination
55.56°
Orbital period
613.9 days
Perihelion
0.987 AU
Aphelion
1.84 AU
Longitude of ascending node
147.95°
Argument of periapsis
312.24°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 30.6 LD
0.0785 AU
Tisserand (Jupiter)
4.243

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
3,246
Data arc
49.68 years
First observed
28 January 1976
Last observed
2 October 2025
Residual RMS
0.33 ″
Solution · Otto Matic
9 December 2025

Physical properties

Mean radius
1.15 km
Rotation period
37.85 hours

Visual & observation

Geometric albedo
0.21
Absolute magnitude (H)
15.14

Discovery & classification

Discovered by
Helin, E. F., Barucci, M. A.
Discovery date
15 August 1985
Discovery site
Caussols

Also known as 3752 · 1985 PA

Apollo Near-Earth Object Named

Close approaches 10 on record

Flyby geometry
Ecliptic flyby of Camillo at 2055-02-15 17:09 UTC Top-down view of the ecliptic, Earth at the centre, for the 2055-02-15 17:09 UTC close approach of Camillo. Catalogue miss distance 33.6 LD · 1.29 × 10⁷ km. The curve is the geocentric path from 2055-02-12 to 2055-02-18, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 33.6 LD · 1.29 × 10⁷ km 2055-02-15 17:09 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2055-02-15 17:09 UTC close approach of Camillo. Catalogue miss distance 33.6 LD · 1.29 × 10⁷ km. The curve is the geocentric path from 2055-02-12 to 2055-02-18, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2055-02-15 17:09:00 Earth 0.0863 AU 33.6 LD 29.2 km/s
2097-02-17 19:35:00 Earth 0.0924 AU 36.0 LD 29.6 km/s
2134-02-14 19:45:00 Earth 0.1283 AU 49.9 LD 28.9 km/s
2139-02-22 12:43:00 Earth 0.1621 AU 63.1 LD 30.4 km/s
2176-02-18 04:17:00 Earth 0.0844 AU 32.9 LD 29.3 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources