Skip to content
Public Universe
Asteroid Near-Earth

2020 UE4

Add to an observing list or journal →

(2020 UE4)

Where is it now

Distance from Sun
1.189 AU
True anomaly
151.86°
Distance from Earth
0.908 AU
As of
21 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 2020 UE4 — 1.189 AU from the Sun 2020 UE4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 UE4 is 0.908 AU from Earth today (7.5 light-minutes).

In the sky

Right ascension
19h 12m 31s
Declination
-27° 14′ 29″
Constellation
Sagittarius
Distance from Earth
0.91 AU
Elongation from the Sun
77.12° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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
0.928 AU
Eccentricity
0.3702
Inclination
3.81°
Orbital period
326.6 days
Perihelion
0.585 AU
Aphelion
1.272 AU
Longitude of ascending node
56.44°
Argument of periapsis
132.02°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 5.0 LD
0.0129 AU
Tisserand (Jupiter)
6.39

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
67
Data arc
45 days
First observed
20 October 2020
Last observed
4 December 2020
Residual RMS
0.51 ″
Solution · Otto Matic
1 March 2023

Visual & observation

Absolute magnitude (H)
23.53

Discovery & classification

Aten Near-Earth Object

Close approaches 233 on record

Flyby geometry
Ecliptic flyby of 2020 UE4 at 2027-08-05 07:04 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-08-05 07:04 UTC close approach of 2020 UE4. Catalogue miss distance 25.7 LD · 9.87 × 10⁶ km. The curve is the geocentric path from 2027-08-02 to 2027-08-08, 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. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 3 Aug 7 Aug 25.7 LD · 9.87 × 10⁶ km 2027-08-05 07:04 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-08-05 07:04 UTC close approach of 2020 UE4. Catalogue miss distance 25.7 LD · 9.87 × 10⁶ km. The curve is the geocentric path from 2027-08-02 to 2027-08-08, 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. At closest approach the object is south of the ecliptic. 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
2027-08-05 07:04:00 Earth 0.066 AU 25.7 LD 10.6 km/s
2028-03-10 21:54:00 Venus 0.0179 AU 7.0 LD 11.3 km/s
2028-04-24 01:36:00 Earth 0.4044 AU 157.4 LD 14.9 km/s
2028-10-19 00:25:00 Earth 0.2597 AU 101.1 LD 8.7 km/s
2029-02-05 22:52:00 Earth 0.3429 AU 133.4 LD 11 km/s
2029-11-21 17:04:00 Earth 0.2584 AU 100.6 LD 18.9 km/s
2035-08-15 08:18:00 Earth 0.2967 AU 115.5 LD 19.7 km/s
2036-05-25 01:16:00 Venus 0.0883 AU 34.3 LD 8.5 km/s
2036-06-05 09:47:00 Earth 0.3227 AU 125.6 LD 9.5 km/s
2036-09-11 06:48:00 Earth 0.2538 AU 98.8 LD 8.4 km/s

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

Sources