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Asteroid Near-Earth

2023 JJ

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(2023 JJ)

Where is it now

Distance from Sun
1.016 AU
True anomaly
203.52°
Distance from Earth
1.716 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 2023 JJ — 1.016 AU from the Sun 2023 JJ
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 JJ is 1.716 AU from Earth today (14.3 light-minutes).

In the sky

Right ascension
15h 50m 58s
Declination
-17° 27′ 21″
Constellation
Libra
Distance from Earth
1.72 AU
Elongation from the Sun
31.77° — near the Sun — look low at dusk or dawn

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
0.882 AU
Eccentricity
0.1716
Inclination
6.57°
Orbital period
302.6 days
Perihelion
0.731 AU
Aphelion
1.033 AU
Longitude of ascending node
228.25°
Argument of periapsis
198.57°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 4.6 LD
0.0118 AU
Tisserand (Jupiter)
6.705

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
47
Data arc
13 days
First observed
9 May 2023
Last observed
22 May 2023
Residual RMS
0.57 ″
Solution · Otto Matic
4 June 2023

Visual & observation

Absolute magnitude (H)
26.84

Discovery & classification

Aten Near-Earth Object

Close approaches 26 on record

Flyby geometry
Ecliptic flyby of 2023 JJ at 2028-02-07 02:08 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-02-07 02:08 UTC close approach of 2023 JJ. Catalogue miss distance 82.5 LD · 3.17 × 10⁷ km. The curve is the geocentric path from 2028-02-04 to 2028-02-10, 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 82.5 LD · 3.17 × 10⁷ km 2028-02-07 02:08 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-02-07 02:08 UTC close approach of 2023 JJ. Catalogue miss distance 82.5 LD · 3.17 × 10⁷ km. The curve is the geocentric path from 2028-02-04 to 2028-02-10, 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
2028-02-07 02:08:00 Earth 0.212 AU 82.5 LD 4.1 km/s
2028-06-18 09:23:00 Earth 0.1181 AU 45.9 LD 6 km/s
2032-12-23 19:12:00 Earth 0.2527 AU 98.3 LD 7.6 km/s
2033-06-21 18:43:00 Earth 0.2932 AU 114.1 LD 11.9 km/s
2037-05-03 05:00:00 Earth 0.4347 AU 169.2 LD 16.8 km/s
2037-11-19 03:26:00 Earth 0.2571 AU 100.1 LD 8.4 km/s
2038-06-15 12:21:00 Earth 0.489 AU 190.3 LD 18.1 km/s
2042-04-26 06:41:00 Earth 0.2245 AU 87.4 LD 10.4 km/s
2042-10-13 07:32:00 Earth 0.2372 AU 92.3 LD 7.2 km/s
2042-11-06 18:26:00 Venus 0.0193 AU 7.5 LD 6.8 km/s

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

Sources