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Asteroid Near-Earth

2021 JZ5

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(2021 JZ5)

Where is it now

Distance from Sun
0.585 AU
True anomaly
280.74°
Distance from Earth
0.451 AU
As of
20 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 — 0.996 AU from the Sun Earth 2021 JZ5 — 0.585 AU from the Sun 2021 JZ5
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 JZ5 is 0.451 AU from Earth today (3.8 light-minutes).

In the sky

Right ascension
14h 50m 33s
Declination
-04° 01′ 44″
Constellation
Libra
Distance from Earth
0.45 AU
Elongation from the Sun
18.29° — too close to the Sun to observe

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
0.871 AU
Eccentricity
0.514
Inclination
15.99°
Orbital period
296.7 days
Perihelion
0.423 AU
Aphelion
1.318 AU
Longitude of ascending node
230.47°
Argument of periapsis
224.36°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.5 LD
0.0014 AU
Tisserand (Jupiter)
6.651

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
27
Data arc
8 days
First observed
12 May 2021
Last observed
20 May 2021
Residual RMS
0.41 ″
Solution · Otto Matic
25 May 2021

Visual & observation

Absolute magnitude (H)
28.35

Discovery & classification

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

Aten Near-Earth Object

Close approaches 52 on record

Flyby geometry
Ecliptic flyby of 2021 JZ5 at 2030-05-30 11:14 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-05-30 11:14 UTC close approach of 2021 JZ5. Catalogue miss distance 116.8 LD · 4.49 × 10⁷ km. The curve is the geocentric path from 2030-05-27 to 2030-06-02, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 116.8 LD · 4.49 × 10⁷ km 2030-05-30 11:14 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-05-30 11:14 UTC close approach of 2021 JZ5. Catalogue miss distance 116.8 LD · 4.49 × 10⁷ km. The curve is the geocentric path from 2030-05-27 to 2030-06-02, 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 north 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
2026-10-16 02:24:00 Earth 0.4428 AU 172.3 LD 16.9 km/s
2030-05-30 11:14:00 Earth 0.3001 AU 116.8 LD 12.1 km/s
2031-08-03 12:23:00 Earth 0.4207 AU 163.7 LD 24.6 km/s
2034-05-11 03:18:00 Earth 0.0126 AU 4.9 LD 15.8 km/s
2035-08-18 14:55:00 Earth 0.2801 AU 109.0 LD 14.1 km/s
2038-05-20 20:26:00 Earth 0.2941 AU 114.5 LD 24.6 km/s
2039-07-13 18:47:00 Earth 0.3754 AU 146.1 LD 11.6 km/s
2039-10-06 06:10:00 Earth 0.416 AU 161.9 LD 14.7 km/s
2047-05-14 01:20:00 Earth 0.1626 AU 63.3 LD 12.6 km/s
2048-08-11 01:23:00 Earth 0.3095 AU 120.5 LD 19 km/s

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

Sources