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Asteroid Near-Earth

2023 UY

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(2023 UY)

Where is it now

Distance from Sun
1.158 AU
True anomaly
197.22°
Distance from Earth
1.246 AU
As of
22 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.

Sun Earth — 0.995 AU from the Sun Earth 2023 UY — 1.158 AU from the Sun 2023 UY
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 UY is 1.246 AU from Earth today (10.4 light-minutes).

In the sky

Right ascension
10h 02m 53s
Declination
+12° 24′ 50″
Constellation
Leo
Distance from Earth
1.25 AU
Elongation from the Sun
61.01° — well clear of the Sun

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
0.939 AU
Eccentricity
0.2515
Inclination
0.45°
Orbital period
332.3 days
Perihelion
0.703 AU
Aphelion
1.175 AU
Longitude of ascending node
18.98°
Argument of periapsis
243.4°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.1 LD
0.0003 AU
Tisserand (Jupiter)
6.364

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
25
Data arc
5 days
First observed
17 October 2023
Last observed
22 October 2023
Residual RMS
0.72 ″
Solution · Otto Matic
22 October 2023

Visual & observation

Absolute magnitude (H)
29.96

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 43 on record

Flyby geometry
Ecliptic flyby of 2023 UY at 2033-10-14 11:57 UTC Top-down view of the ecliptic, Earth at the centre, for the 2033-10-14 11:57 UTC close approach of 2023 UY. Catalogue miss distance 10.6 LD · 4.09 × 10⁶ km. The curve is the geocentric path from 2033-10-11 to 2033-10-17, 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 10.6 LD · 4.09 × 10⁶ km 2033-10-14 11:57 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2033-10-14 11:57 UTC close approach of 2023 UY. Catalogue miss distance 10.6 LD · 4.09 × 10⁶ km. The curve is the geocentric path from 2033-10-11 to 2033-10-17, 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
2027-02-18 05:49:00 Venus 0.0592 AU 23.0 LD 8.4 km/s
2033-10-14 11:57:00 Earth 0.0273 AU 10.6 LD 6.9 km/s
2034-06-21 14:28:00 Earth 0.3135 AU 122.0 LD 10.4 km/s
2035-02-03 21:02:00 Earth 0.1053 AU 41.0 LD 5.4 km/s
2036-01-30 17:15:00 Earth 0.4591 AU 178.6 LD 22.1 km/s
2042-10-27 12:00:00 Earth 0.4017 AU 156.3 LD 20.2 km/s
2043-11-07 09:15:00 Earth 0.1397 AU 54.4 LD 5.6 km/s
2044-06-01 18:03:00 Earth 0.3104 AU 120.8 LD 10.3 km/s
2044-06-20 13:14:00 Venus 0.021 AU 8.2 LD 5.5 km/s
2045-02-14 07:30:00 Earth 0.0179 AU 6.9 LD 8.3 km/s

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

Sources