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Asteroid Near-Earth

2015 KJ122

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(2015 KJ122)

Where is it now

Distance from Sun
0.575 AU
True anomaly
237.48°
Distance from Earth
1.135 AU
As of
16 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 — 0.997 AU from the Sun Earth 2015 KJ122 — 0.575 AU from the Sun 2015 KJ122
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 KJ122 is 1.135 AU from Earth today (9.4 light-minutes).

In the sky

Right ascension
15h 28m 32s
Declination
-16° 24′ 23″
Constellation
Libra
Distance from Earth
1.13 AU
Elongation from the Sun
30.15° — 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
0.785 AU
Eccentricity
0.7503
Inclination
5.06°
Orbital period
254.2 days
Perihelion
0.196 AU
Aphelion
1.374 AU
Longitude of ascending node
187.83°
Argument of periapsis
229.85°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 12.4 LD
0.0318 AU
Tisserand (Jupiter)
7.138

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
293
Data arc
10.94 years
First observed
19 May 2015
Last observed
27 April 2026
Residual RMS
0.52 ″
Solution · Otto Matic
13 May 2026

Visual & observation

Absolute magnitude (H)
22.01

Discovery & classification

Aten Near-Earth Object

Close approaches 238 on record

Flyby geometry
Ecliptic flyby of 2015 KJ122 at 2029-06-17 01:01 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-06-17 01:01 UTC close approach of 2015 KJ122. Catalogue miss distance 63.5 LD · 2.44 × 10⁷ km. The curve is the geocentric path from 2029-06-14 to 2029-06-20, 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 63.5 LD · 2.44 × 10⁷ km 2029-06-17 01:01 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-06-17 01:01 UTC close approach of 2015 KJ122. Catalogue miss distance 63.5 LD · 2.44 × 10⁷ km. The curve is the geocentric path from 2029-06-14 to 2029-06-20, 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
2027-07-05 10:10:00 Merc 0.099 AU 38.5 LD 35.4 km/s
2027-07-05 10:10:00 Mercury 0.099 AU 38.5 LD 35.4 km/s
2028-04-25 18:23:00 Venus 0.034 AU 13.2 LD 29.5 km/s
2029-06-17 01:01:00 Earth 0.1631 AU 63.5 LD 18.3 km/s
2030-12-08 17:33:00 Venus 0.0997 AU 38.8 LD 26.7 km/s
2032-06-09 11:49:00 Merc 0.0912 AU 35.5 LD 37.9 km/s
2032-06-09 11:49:00 Mercury 0.0912 AU 35.5 LD 37.9 km/s
2033-10-09 02:15:00 Merc 0.0935 AU 36.4 LD 34.3 km/s
2033-10-09 02:15:00 Mercury 0.0935 AU 36.4 LD 34.3 km/s
2036-06-15 09:17:00 Earth 0.1094 AU 42.6 LD 23.8 km/s

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

Sources