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Asteroid Near-Earth

2023 UZ1

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(2023 UZ1)

Where is it now

Distance from Sun
1.629 AU
True anomaly
169.54°
Distance from Earth
0.739 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.995 AU from the Sun Earth 2023 UZ1 — 1.629 AU from the Sun 2023 UZ1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 UZ1 is 0.739 AU from Earth today (6.1 light-minutes).

In the sky

Right ascension
04h 30m 16s
Declination
+06° 40′ 54″
Constellation
Taurus
Distance from Earth
0.74 AU
Elongation from the Sun
140.77° — 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
0.963 AU
Eccentricity
0.8134
Inclination
18.77°
Orbital period
345.3 days
Perihelion
0.18 AU
Aphelion
1.747 AU
Longitude of ascending node
205.21°
Argument of periapsis
31.5°
Epoch · J2000
2460235.5
Orbit class · ATE
Aten
Earth MOID · 5.7 LD
0.0146 AU
Tisserand (Jupiter)
5.876

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
48
Data arc
11 days
First observed
10 October 2023
Last observed
21 October 2023
Residual RMS
0.45 ″
Solution · Otto Matic
25 July 2025

Visual & observation

Absolute magnitude (H)
22.81

Discovery & classification

Aten Near-Earth Object

Close approaches 5 on record

Flyby geometry
Ecliptic flyby of 2023 UZ1 at 2075-10-13 05:27 UTC Top-down view of the ecliptic, Earth at the centre, for the 2075-10-13 05:27 UTC close approach of 2023 UZ1. Catalogue miss distance 62.7 LD · 2.41 × 10⁷ km. The curve is the geocentric path from 2075-10-10 to 2075-10-16, 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 62.7 LD · 2.41 × 10⁷ km 2075-10-13 05:27 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2075-10-13 05:27 UTC close approach of 2023 UZ1. Catalogue miss distance 62.7 LD · 2.41 × 10⁷ km. The curve is the geocentric path from 2075-10-10 to 2075-10-16, 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
2075-10-13 05:27:00 Earth 0.1611 AU 62.7 LD 24.1 km/s
2138-02-16 19:34:00 Venus 0.1064 AU 41.4 LD 32.6 km/s
2144-10-17 01:27:00 Earth 0.0261 AU 10.1 LD 27.7 km/s

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

Sources