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Asteroid Near-Earth

Cuyo

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1917 Cuyo (1968 AA)

Where is it now

Distance from Sun
2.739 AU
True anomaly
214.67°
Distance from Earth
3.561 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 Cuyo — 2.739 AU from the Sun Cuyo
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Cuyo is 3.561 AU from Earth today (29.6 light-minutes).

In the sky

Right ascension
15h 07m 01s
Declination
-03° 17′ 46″
Constellation
Libra
Distance from Earth
3.56 AU
Elongation from the Sun
29.38° — near the Sun — look low at dusk or dawn

Visible from both hemispheres.

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
2.149 AU
Eccentricity
0.5054
Inclination
23.96°
Orbital period
3.15 years
Perihelion
1.063 AU
Aphelion
3.236 AU
Longitude of ascending node
188.27°
Argument of periapsis
194.55°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 27.9 LD
0.0718 AU
Tisserand (Jupiter)
3.435

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
4,305
Data arc
72.11 years
First observed
6 May 1954
Last observed
14 June 2026
Residual RMS
0.45 ″
Solution · Otto Matic
2 September 2026

Physical properties

Mean radius
2.85 km
Rotation period
2.69 hours

Visual & observation

Geometric albedo
0.195
Absolute magnitude (H)
14.38
Spectral type (SMASS)
Sl

Discovery & classification

Discovered by
Cesco, C. U., Samuel, A. G.
Discovery date
1 January 1968
Discovery site
El Leoncito

Also known as 1917 · 1968 AA

Amor Near-Earth Object Named

Close approaches 6 on record

Flyby geometry
Ecliptic flyby of Cuyo at 2030-10-06 07:09 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-10-06 07:09 UTC close approach of Cuyo. Catalogue miss distance 34.9 LD · 1.34 × 10⁷ km. The curve is the geocentric path from 2030-10-03 to 2030-10-09, 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 34.9 LD · 1.34 × 10⁷ km 2030-10-06 07:09 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-10-06 07:09 UTC close approach of Cuyo. Catalogue miss distance 34.9 LD · 1.34 × 10⁷ km. The curve is the geocentric path from 2030-10-03 to 2030-10-09, 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
2030-10-06 07:09:00 Earth 0.0897 AU 34.9 LD 14.4 km/s
2071-10-07 22:28:00 Earth 0.1044 AU 40.6 LD 14.4 km/s
2131-09-24 05:26:00 Earth 0.1892 AU 73.6 LD 16.4 km/s
2172-10-02 09:41:00 Earth 0.0729 AU 28.4 LD 14.8 km/s

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

Sources