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Asteroid Near-Earth

112221

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112221 (2002 KH4)

Where is it now

Distance from Sun
2.347 AU
True anomaly
120.13°
Distance from Earth
1.89 AU
As of
11 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 — 0.998 AU from the Sun Earth 112221 — 2.347 AU from the Sun 112221
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 112221 is 1.89 AU from Earth today (15.7 light-minutes).

In the sky

Right ascension
20h 09m 25s
Declination
+55° 27′ 50″
Constellation
Cygnus
Distance from Earth
1.89 AU
Elongation from the Sun
104.5° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
2.271 AU
Eccentricity
0.4435
Inclination
58.67°
Orbital period
3.42 years
Perihelion
1.264 AU
Aphelion
3.279 AU
Longitude of ascending node
230.06°
Argument of periapsis
356.58°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 99.2 LD
0.255 AU
Tisserand (Jupiter)
2.907

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
1,170
Data arc
30.99 years
First observed
1 July 1995
Last observed
27 June 2026
Residual RMS
0.51 ″
Solution · Otto Matic
28 June 2026

Physical properties

Rotation period
12.87 hours

Visual & observation

Absolute magnitude (H)
15.52

Discovery & classification

Discovered by
LINEAR
Discovery date
22 May 2002
Discovery site
Socorro

Also known as 2002 KH4

Amor Near-Earth Object

Close approaches 8 on record

When (UTC) Body Distance Lunar distances Relative speed
2130-08-14 17:23:00 Juptr 1.8503 AU 720.1 LD 13.3 km/s
2154-07-05 13:47:00 Juptr 1.7372 AU 676.1 LD 13 km/s
2178-05-24 19:43:00 Juptr 1.7296 AU 673.1 LD 12.9 km/s

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

Sources